Extensions
*
* See {@link Extension} and {@link DataExtension}.
*
* Permission Control
*
* Object-level access control by {@link Permission}. Permission codes are arbitrary
* strings which can be selected on a group-by-group basis.
*
*
* class Article extends DataObject implements PermissionProvider {
* static $api_access = true;
*
* function canView($member = false) {
* return Permission::check('ARTICLE_VIEW');
* }
* function canEdit($member = false) {
* return Permission::check('ARTICLE_EDIT');
* }
* function canDelete() {
* return Permission::check('ARTICLE_DELETE');
* }
* function canCreate() {
* return Permission::check('ARTICLE_CREATE');
* }
* function providePermissions() {
* return array(
* 'ARTICLE_VIEW' => 'Read an article object',
* 'ARTICLE_EDIT' => 'Edit an article object',
* 'ARTICLE_DELETE' => 'Delete an article object',
* 'ARTICLE_CREATE' => 'Create an article object',
* );
* }
* }
*
*
* Object-level access control by {@link Group} membership:
*
* class Article extends DataObject {
* static $api_access = true;
*
* function canView($member = false) {
* if(!$member) $member = Security::getCurrentUser();
* return $member->inGroup('Subscribers');
* }
* function canEdit($member = false) {
* if(!$member) $member = Security::getCurrentUser();
* return $member->inGroup('Editors');
* }
*
* // ...
* }
*
*
* If any public method on this class is prefixed with an underscore,
* the results are cached in memory through {@link cachedCall()}.
*
*
* @todo Add instance specific removeExtension() which undos loadExtraStatics()
* and defineMethods()
*
* @property int $ID ID of the DataObject, 0 if the DataObject doesn't exist in database.
* @property int $OldID ID of object, if deleted
* @property string $ClassName Class name of the DataObject
* @property string $LastEdited Date and time of DataObject's last modification.
* @property string $Created Date and time of DataObject creation.
*/
class DataObject extends ViewableData implements DataObjectInterface, i18nEntityProvider, Resettable
{
/**
* Human-readable singular name.
* @var string
* @config
*/
private static $singular_name = null;
/**
* Human-readable plural name
* @var string
* @config
*/
private static $plural_name = null;
/**
* Allow API access to this object?
* @todo Define the options that can be set here
* @config
*/
private static $api_access = false;
/**
* Allows specification of a default value for the ClassName field.
* Configure this value only in subclasses of DataObject.
*
* @config
* @var string
*/
private static $default_classname = null;
/**
* @deprecated 4.0..5.0
* @var bool
*/
public $destroyed = false;
/**
* Data stored in this objects database record. An array indexed by fieldname.
*
* Use {@link toMap()} if you want an array representation
* of this object, as the $record array might contain lazy loaded field aliases.
*
* @var array
*/
protected $record;
/**
* If selected through a many_many through relation, this is the instance of the through record
*
* @var DataObject
*/
protected $joinRecord;
/**
* Represents a field that hasn't changed (before === after, thus before == after)
*/
const CHANGE_NONE = 0;
/**
* Represents a field that has changed type, although not the loosely defined value.
* (before !== after && before == after)
* E.g. change 1 to true or "true" to true, but not true to 0.
* Value changes are by nature also considered strict changes.
*/
const CHANGE_STRICT = 1;
/**
* Represents a field that has changed the loosely defined value
* (before != after, thus, before !== after))
* E.g. change false to true, but not false to 0
*/
const CHANGE_VALUE = 2;
/**
* An array indexed by fieldname, true if the field has been changed.
* Use {@link getChangedFields()} and {@link isChanged()} to inspect
* the changed state.
*
* @var array
*/
private $changed;
/**
* The database record (in the same format as $record), before
* any changes.
* @var array
*/
protected $original;
/**
* Used by onBeforeDelete() to ensure child classes call parent::onBeforeDelete()
* @var boolean
*/
protected $brokenOnDelete = false;
/**
* Used by onBeforeWrite() to ensure child classes call parent::onBeforeWrite()
* @var boolean
*/
protected $brokenOnWrite = false;
/**
* @config
* @var boolean Should dataobjects be validated before they are written?
* Caution: Validation can contain safeguards against invalid/malicious data,
* and check permission levels (e.g. on {@link Group}). Therefore it is recommended
* to only disable validation for very specific use cases.
*/
private static $validation_enabled = true;
/**
* Static caches used by relevant functions.
*
* @var array
*/
protected static $_cache_get_one;
/**
* Cache of field labels
*
* @var array
*/
protected static $_cache_field_labels = array();
/**
* Base fields which are not defined in static $db
*
* @config
* @var array
*/
private static $fixed_fields = array(
'ID' => 'PrimaryKey',
'ClassName' => 'DBClassName',
'LastEdited' => 'DBDatetime',
'Created' => 'DBDatetime',
);
/**
* Override table name for this class. If ignored will default to FQN of class.
* This option is not inheritable, and must be set on each class.
* If left blank naming will default to the legacy (3.x) behaviour.
*
* @var string
*/
private static $table_name = null;
/**
* Non-static relationship cache, indexed by component name.
*
* @var DataObject[]
*/
protected $components;
/**
* Non-static cache of has_many and many_many relations that can't be written until this object is saved.
*
* @var UnsavedRelationList[]
*/
protected $unsavedRelations;
/**
* List of relations that should be cascade deleted, similar to `owns`
* Note: This will trigger delete on many_many objects, not only the mapping table.
* For many_many through you can specify the components you want to delete separately
* (many_many or has_many sub-component)
*
* @config
* @var array
*/
private static $cascade_deletes = [];
/**
* Get schema object
*
* @return DataObjectSchema
*/
public static function getSchema()
{
return Injector::inst()->get(DataObjectSchema::class);
}
/**
* Construct a new DataObject.
*
* @param array|null $record Used internally for rehydrating an object from database content.
* Bypasses setters on this class, and hence should not be used
* for populating data on new records.
* @param boolean $isSingleton This this to true if this is a singleton() object, a stub for calling methods.
* Singletons don't have their defaults set.
* @param array $queryParams List of DataQuery params necessary to lazy load, or load related objects.
*/
public function __construct($record = null, $isSingleton = false, $queryParams = array())
{
parent::__construct();
// Set query params on the DataObject to tell the lazy loading mechanism the context the object creation context
$this->setSourceQueryParams($queryParams);
// Set the fields data.
if (!$record) {
$record = array(
'ID' => 0,
'ClassName' => static::class,
'RecordClassName' => static::class
);
}
if ($record instanceof stdClass) {
$record = (array)$record;
}
if (!is_array($record)) {
if (is_object($record)) {
$passed = "an object of type '" . get_class($record) . "'";
} else {
$passed = "The value '$record'";
}
user_error(
"DataObject::__construct passed $passed. It's supposed to be passed an array,"
. " taken straight from the database. Perhaps you should use DataList::create()->First(); instead?",
E_USER_WARNING
);
$record = null;
}
// Set $this->record to $record, but ignore NULLs
$this->record = array();
foreach ($record as $k => $v) {
// Ensure that ID is stored as a number and not a string
// To do: this kind of clean-up should be done on all numeric fields, in some relatively
// performant manner
if ($v !== null) {
if ($k == 'ID' && is_numeric($v)) {
$this->record[$k] = (int)$v;
} else {
$this->record[$k] = $v;
}
}
}
// Identify fields that should be lazy loaded, but only on existing records
if (!empty($record['ID'])) {
// Get all field specs scoped to class for later lazy loading
$fields = static::getSchema()->fieldSpecs(
static::class,
DataObjectSchema::INCLUDE_CLASS | DataObjectSchema::DB_ONLY
);
foreach ($fields as $field => $fieldSpec) {
$fieldClass = strtok($fieldSpec, ".");
if (!array_key_exists($field, $record)) {
$this->record[$field . '_Lazy'] = $fieldClass;
}
}
}
$this->original = $this->record;
// Keep track of the modification date of all the data sourced to make this page
// From this we create a Last-Modified HTTP header
if (isset($record['LastEdited'])) {
HTTP::register_modification_date($record['LastEdited']);
}
// Must be called after parent constructor
if (!$isSingleton && (!isset($this->record['ID']) || !$this->record['ID'])) {
$this->populateDefaults();
}
// prevent populateDefaults() and setField() from marking overwritten defaults as changed
$this->changed = array();
}
/**
* Destroy all of this objects dependant objects and local caches.
* You'll need to call this to get the memory of an object that has components or extensions freed.
*/
public function destroy()
{
$this->flushCache(false);
}
/**
* Create a duplicate of this node. Can duplicate many_many relations
*
* @param bool $doWrite Perform a write() operation before returning the object.
* If this is true, it will create the duplicate in the database.
* @param bool|string $manyMany Which many-many to duplicate. Set to true to duplicate all, false to duplicate none.
* Alternatively set to the string of the relation config to duplicate
* (supports 'many_many', or 'belongs_many_many')
* @return static A duplicate of this node. The exact type will be the type of this node.
*/
public function duplicate($doWrite = true, $manyMany = 'many_many')
{
$map = $this->toMap();
unset($map['Created']);
/** @var static $clone */
$clone = Injector::inst()->create(static::class, $map, false, $this->getSourceQueryParams());
$clone->ID = 0;
$clone->invokeWithExtensions('onBeforeDuplicate', $this, $doWrite, $manyMany);
if ($manyMany) {
$this->duplicateManyManyRelations($this, $clone, $manyMany);
}
if ($doWrite) {
$clone->write();
}
$clone->invokeWithExtensions('onAfterDuplicate', $this, $doWrite, $manyMany);
return $clone;
}
/**
* Copies the many_many and belongs_many_many relations from one object to another instance of the name of object.
*
* @param DataObject $sourceObject the source object to duplicate from
* @param DataObject $destinationObject the destination object to populate with the duplicated relations
* @param bool|string $filter
*/
protected function duplicateManyManyRelations($sourceObject, $destinationObject, $filter)
{
// Get list of relations to duplicate
if ($filter === 'many_many' || $filter === 'belongs_many_many') {
$relations = $sourceObject->config()->get($filter);
} elseif ($filter === true) {
$relations = $sourceObject->manyMany();
} else {
throw new InvalidArgumentException("Invalid many_many duplication filter");
}
foreach ($relations as $manyManyName => $type) {
$this->duplicateManyManyRelation($sourceObject, $destinationObject, $manyManyName);
}
}
/**
* Duplicates a single many_many relation from one object to another
*
* @param DataObject $sourceObject
* @param DataObject $destinationObject
* @param string $manyManyName
*/
protected function duplicateManyManyRelation($sourceObject, $destinationObject, $manyManyName)
{
// Ensure this component exists on the destination side as well
if (!static::getSchema()->manyManyComponent(get_class($destinationObject), $manyManyName)) {
return;
}
// Copy all components from source to destination
$source = $sourceObject->getManyManyComponents($manyManyName);
$dest = $destinationObject->getManyManyComponents($manyManyName);
foreach ($source as $item) {
$dest->add($item);
}
}
/**
* Return obsolete class name, if this is no longer a valid class
*
* @return string
*/
public function getObsoleteClassName()
{
$className = $this->getField("ClassName");
if (!ClassInfo::exists($className)) {
return $className;
}
return null;
}
/**
* Gets name of this class
*
* @return string
*/
public function getClassName()
{
$className = $this->getField("ClassName");
if (!ClassInfo::exists($className)) {
return static::class;
}
return $className;
}
/**
* Set the ClassName attribute. {@link $class} is also updated.
* Warning: This will produce an inconsistent record, as the object
* instance will not automatically switch to the new subclass.
* Please use {@link newClassInstance()} for this purpose,
* or destroy and reinstanciate the record.
*
* @param string $className The new ClassName attribute (a subclass of {@link DataObject})
* @return $this
*/
public function setClassName($className)
{
$className = trim($className);
if (!$className || !is_subclass_of($className, self::class)) {
return $this;
}
$this->setField("ClassName", $className);
$this->setField('RecordClassName', $className);
return $this;
}
/**
* Create a new instance of a different class from this object's record.
* This is useful when dynamically changing the type of an instance. Specifically,
* it ensures that the instance of the class is a match for the className of the
* record. Don't set the {@link DataObject->class} or {@link DataObject->ClassName}
* property manually before calling this method, as it will confuse change detection.
*
* If the new class is different to the original class, defaults are populated again
* because this will only occur automatically on instantiation of a DataObject if
* there is no record, or the record has no ID. In this case, we do have an ID but
* we still need to repopulate the defaults.
*
* @param string $newClassName The name of the new class
*
* @return DataObject The new instance of the new class, The exact type will be of the class name provided.
*/
public function newClassInstance($newClassName)
{
if (!is_subclass_of($newClassName, self::class)) {
throw new InvalidArgumentException("$newClassName is not a valid subclass of DataObject");
}
$originalClass = $this->ClassName;
/** @var DataObject $newInstance */
$newInstance = Injector::inst()->create($newClassName, $this->record, false);
// Modify ClassName
if ($newClassName != $originalClass) {
$newInstance->setClassName($newClassName);
$newInstance->populateDefaults();
$newInstance->forceChange();
}
return $newInstance;
}
/**
* Adds methods from the extensions.
* Called by Object::__construct() once per class.
*/
public function defineMethods()
{
parent::defineMethods();
if (static::class === self::class) {
return;
}
// Set up accessors for joined items
if ($manyMany = $this->manyMany()) {
foreach ($manyMany as $relationship => $class) {
$this->addWrapperMethod($relationship, 'getManyManyComponents');
}
}
if ($hasMany = $this->hasMany()) {
foreach ($hasMany as $relationship => $class) {
$this->addWrapperMethod($relationship, 'getComponents');
}
}
if ($hasOne = $this->hasOne()) {
foreach ($hasOne as $relationship => $class) {
$this->addWrapperMethod($relationship, 'getComponent');
}
}
if ($belongsTo = $this->belongsTo()) {
foreach (array_keys($belongsTo) as $relationship) {
$this->addWrapperMethod($relationship, 'getComponent');
}
}
}
/**
* Returns true if this object "exists", i.e., has a sensible value.
* The default behaviour for a DataObject is to return true if
* the object exists in the database, you can override this in subclasses.
*
* @return boolean true if this object exists
*/
public function exists()
{
return (isset($this->record['ID']) && $this->record['ID'] > 0);
}
/**
* Returns TRUE if all values (other than "ID") are
* considered empty (by weak boolean comparison).
*
* @return boolean
*/
public function isEmpty()
{
$fixed = DataObject::config()->uninherited('fixed_fields');
foreach ($this->toMap() as $field => $value) {
// only look at custom fields
if (isset($fixed[$field])) {
continue;
}
$dbObject = $this->dbObject($field);
if (!$dbObject) {
continue;
}
if ($dbObject->exists()) {
return false;
}
}
return true;
}
/**
* Pluralise this item given a specific count.
*
* E.g. "0 Pages", "1 File", "3 Images"
*
* @param string $count
* @return string
*/
public function i18n_pluralise($count)
{
$default = 'one ' . $this->i18n_singular_name() . '|{count} ' . $this->i18n_plural_name();
return i18n::_t(
static::class . '.PLURALS',
$default,
[ 'count' => $count ]
);
}
/**
* Get the user friendly singular name of this DataObject.
* If the name is not defined (by redefining $singular_name in the subclass),
* this returns the class name.
*
* @return string User friendly singular name of this DataObject
*/
public function singular_name()
{
$name = $this->config()->get('singular_name');
if ($name) {
return $name;
}
return ucwords(trim(strtolower(preg_replace(
'/_?([A-Z])/',
' $1',
ClassInfo::shortName($this)
))));
}
/**
* Get the translated user friendly singular name of this DataObject
* same as singular_name() but runs it through the translating function
*
* Translating string is in the form:
* $this->class.SINGULARNAME
* Example:
* Page.SINGULARNAME
*
* @return string User friendly translated singular name of this DataObject
*/
public function i18n_singular_name()
{
return _t(static::class . '.SINGULARNAME', $this->singular_name());
}
/**
* Get the user friendly plural name of this DataObject
* If the name is not defined (by renaming $plural_name in the subclass),
* this returns a pluralised version of the class name.
*
* @return string User friendly plural name of this DataObject
*/
public function plural_name()
{
if ($name = $this->config()->get('plural_name')) {
return $name;
}
$name = $this->singular_name();
//if the penultimate character is not a vowel, replace "y" with "ies"
if (preg_match('/[^aeiou]y$/i', $name)) {
$name = substr($name, 0, -1) . 'ie';
}
return ucfirst($name . 's');
}
/**
* Get the translated user friendly plural name of this DataObject
* Same as plural_name but runs it through the translation function
* Translation string is in the form:
* $this->class.PLURALNAME
* Example:
* Page.PLURALNAME
*
* @return string User friendly translated plural name of this DataObject
*/
public function i18n_plural_name()
{
return _t(static::class . '.PLURALNAME', $this->plural_name());
}
/**
* Standard implementation of a title/label for a specific
* record. Tries to find properties 'Title' or 'Name',
* and falls back to the 'ID'. Useful to provide
* user-friendly identification of a record, e.g. in errormessages
* or UI-selections.
*
* Overload this method to have a more specialized implementation,
* e.g. for an Address record this could be:
*
* function getTitle() {
* return "{$this->StreetNumber} {$this->StreetName} {$this->City}";
* }
*
*
* @return string
*/
public function getTitle()
{
$schema = static::getSchema();
if ($schema->fieldSpec($this, 'Title')) {
return $this->getField('Title');
}
if ($schema->fieldSpec($this, 'Name')) {
return $this->getField('Name');
}
return "#{$this->ID}";
}
/**
* Returns the associated database record - in this case, the object itself.
* This is included so that you can call $dataOrController->data() and get a DataObject all the time.
*
* @return DataObject Associated database record
*/
public function data()
{
return $this;
}
/**
* Convert this object to a map.
*
* @return array The data as a map.
*/
public function toMap()
{
$this->loadLazyFields();
return $this->record;
}
/**
* Return all currently fetched database fields.
*
* This function is similar to toMap() but doesn't trigger the lazy-loading of all unfetched fields.
* Obviously, this makes it a lot faster.
*
* @return array The data as a map.
*/
public function getQueriedDatabaseFields()
{
return $this->record;
}
/**
* Update a number of fields on this object, given a map of the desired changes.
*
* The field names can be simple names, or you can use a dot syntax to access $has_one relations.
* For example, array("Author.FirstName" => "Jim") will set $this->Author()->FirstName to "Jim".
*
* update() doesn't write the main object, but if you use the dot syntax, it will write()
* the related objects that it alters.
*
* @param array $data A map of field name to data values to update.
* @return DataObject $this
*/
public function update($data)
{
foreach ($data as $key => $value) {
// Implement dot syntax for updates
if (strpos($key, '.') !== false) {
$relations = explode('.', $key);
$fieldName = array_pop($relations);
/** @var static $relObj */
$relObj = $this;
$relation = null;
foreach ($relations as $i => $relation) {
// no support for has_many or many_many relationships,
// as the updater wouldn't know which object to write to (or create)
if ($relObj->$relation() instanceof DataObject) {
$parentObj = $relObj;
$relObj = $relObj->$relation();
// If the intermediate relationship objects haven't been created, then write them
if ($iID || (!$relObj->ID && $parentObj !== $this)) {
$relObj->write();
$relatedFieldName = $relation . "ID";
$parentObj->$relatedFieldName = $relObj->ID;
$parentObj->write();
}
} else {
user_error(
"DataObject::update(): Can't traverse relationship '$relation'," .
"it has to be a has_one relationship or return a single DataObject",
E_USER_NOTICE
);
// unset relation object so we don't write properties to the wrong object
$relObj = null;
break;
}
}
if ($relObj) {
$relObj->$fieldName = $value;
$relObj->write();
$relatedFieldName = $relation . "ID";
$this->$relatedFieldName = $relObj->ID;
$relObj->flushCache();
} else {
$class = static::class;
user_error("Couldn't follow dot syntax '{$key}' on '{$class}' object", E_USER_WARNING);
}
} else {
$this->$key = $value;
}
}
return $this;
}
/**
* Pass changes as a map, and try to
* get automatic casting for these fields.
* Doesn't write to the database. To write the data,
* use the write() method.
*
* @param array $data A map of field name to data values to update.
* @return DataObject $this
*/
public function castedUpdate($data)
{
foreach ($data as $k => $v) {
$this->setCastedField($k, $v);
}
return $this;
}
/**
* Merges data and relations from another object of same class,
* without conflict resolution. Allows to specify which
* dataset takes priority in case its not empty.
* has_one-relations are just transferred with priority 'right'.
* has_many and many_many-relations are added regardless of priority.
*
* Caution: has_many/many_many relations are moved rather than duplicated,
* meaning they are not connected to the merged object any longer.
* Caution: Just saves updated has_many/many_many relations to the database,
* doesn't write the updated object itself (just writes the object-properties).
* Caution: Does not delete the merged object.
* Caution: Does now overwrite Created date on the original object.
*
* @param DataObject $rightObj
* @param string $priority left|right Determines who wins in case of a conflict (optional)
* @param bool $includeRelations Merge any existing relations (optional)
* @param bool $overwriteWithEmpty Overwrite existing left values with empty right values.
* Only applicable with $priority='right'. (optional)
* @return Boolean
*/
public function merge($rightObj, $priority = 'right', $includeRelations = true, $overwriteWithEmpty = false)
{
$leftObj = $this;
if ($leftObj->ClassName != $rightObj->ClassName) {
// we can't merge similiar subclasses because they might have additional relations
user_error("DataObject->merge(): Invalid object class '{$rightObj->ClassName}'
(expected '{$leftObj->ClassName}').", E_USER_WARNING);
return false;
}
if (!$rightObj->ID) {
user_error("DataObject->merge(): Please write your merged-in object to the database before merging,
to make sure all relations are transferred properly.').", E_USER_WARNING);
return false;
}
// makes sure we don't merge data like ID or ClassName
$rightData = DataObject::getSchema()->fieldSpecs(get_class($rightObj));
foreach ($rightData as $key => $rightSpec) {
// Don't merge ID
if ($key === 'ID') {
continue;
}
// Only merge relations if allowed
if ($rightSpec === 'ForeignKey' && !$includeRelations) {
continue;
}
// don't merge conflicting values if priority is 'left'
if ($priority == 'left' && $leftObj->{$key} !== $rightObj->{$key}) {
continue;
}
// don't overwrite existing left values with empty right values (if $overwriteWithEmpty is set)
if ($priority == 'right' && !$overwriteWithEmpty && empty($rightObj->{$key})) {
continue;
}
// TODO remove redundant merge of has_one fields
$leftObj->{$key} = $rightObj->{$key};
}
// merge relations
if ($includeRelations) {
if ($manyMany = $this->manyMany()) {
foreach ($manyMany as $relationship => $class) {
/** @var DataObject $leftComponents */
$leftComponents = $leftObj->getManyManyComponents($relationship);
$rightComponents = $rightObj->getManyManyComponents($relationship);
if ($rightComponents && $rightComponents->exists()) {
$leftComponents->addMany($rightComponents->column('ID'));
}
$leftComponents->write();
}
}
if ($hasMany = $this->hasMany()) {
foreach ($hasMany as $relationship => $class) {
$leftComponents = $leftObj->getComponents($relationship);
$rightComponents = $rightObj->getComponents($relationship);
if ($rightComponents && $rightComponents->exists()) {
$leftComponents->addMany($rightComponents->column('ID'));
}
$leftComponents->write();
}
}
}
return true;
}
/**
* Forces the record to think that all its data has changed.
* Doesn't write to the database. Only sets fields as changed
* if they are not already marked as changed.
*
* @return $this
*/
public function forceChange()
{
// Ensure lazy fields loaded
$this->loadLazyFields();
$fields = static::getSchema()->fieldSpecs(static::class);
// $this->record might not contain the blank values so we loop on $this->inheritedDatabaseFields() as well
$fieldNames = array_unique(array_merge(
array_keys($this->record),
array_keys($fields)
));
foreach ($fieldNames as $fieldName) {
if (!isset($this->changed[$fieldName])) {
$this->changed[$fieldName] = self::CHANGE_STRICT;
}
// Populate the null values in record so that they actually get written
if (!isset($this->record[$fieldName])) {
$this->record[$fieldName] = null;
}
}
// @todo Find better way to allow versioned to write a new version after forceChange
if ($this->isChanged('Version')) {
unset($this->changed['Version']);
}
return $this;
}
/**
* Validate the current object.
*
* By default, there is no validation - objects are always valid! However, you can overload this method in your
* DataObject sub-classes to specify custom validation, or use the hook through DataExtension.
*
* Invalid objects won't be able to be written - a warning will be thrown and no write will occur. onBeforeWrite()
* and onAfterWrite() won't get called either.
*
* It is expected that you call validate() in your own application to test that an object is valid before
* attempting a write, and respond appropriately if it isn't.
*
* @see {@link ValidationResult}
* @return ValidationResult
*/
public function validate()
{
$result = ValidationResult::create();
$this->extend('validate', $result);
return $result;
}
/**
* Public accessor for {@see DataObject::validate()}
*
* @return ValidationResult
*/
public function doValidate()
{
Deprecation::notice('5.0', 'Use validate');
return $this->validate();
}
/**
* Event handler called before writing to the database.
* You can overload this to clean up or otherwise process data before writing it to the
* database. Don't forget to call parent::onBeforeWrite(), though!
*
* This called after {@link $this->validate()}, so you can be sure that your data is valid.
*
* @uses DataExtension->onBeforeWrite()
*/
protected function onBeforeWrite()
{
$this->brokenOnWrite = false;
$dummy = null;
$this->extend('onBeforeWrite', $dummy);
}
/**
* Event handler called after writing to the database.
* You can overload this to act upon changes made to the data after it is written.
* $this->changed will have a record
* database. Don't forget to call parent::onAfterWrite(), though!
*
* @uses DataExtension->onAfterWrite()
*/
protected function onAfterWrite()
{
$dummy = null;
$this->extend('onAfterWrite', $dummy);
}
/**
* Find all objects that will be cascade deleted if this object is deleted
*
* Notes:
* - If this object is versioned, objects will only be searched in the same stage as the given record.
* - This will only be useful prior to deletion, as post-deletion this record will no longer exist.
*
* @param bool $recursive True if recursive
* @param ArrayList $list Optional list to add items to
* @return ArrayList list of objects
*/
public function findCascadeDeletes($recursive = true, $list = null)
{
// Find objects in these relationships
return $this->findRelatedObjects('cascade_deletes', $recursive, $list);
}
/**
* Event handler called before deleting from the database.
* You can overload this to clean up or otherwise process data before delete this
* record. Don't forget to call parent::onBeforeDelete(), though!
*
* @uses DataExtension->onBeforeDelete()
*/
protected function onBeforeDelete()
{
$this->brokenOnDelete = false;
$dummy = null;
$this->extend('onBeforeDelete', $dummy);
// Cascade deletes
$deletes = $this->findCascadeDeletes(false);
foreach ($deletes as $delete) {
$delete->delete();
}
}
protected function onAfterDelete()
{
$this->extend('onAfterDelete');
}
/**
* Load the default values in from the self::$defaults array.
* Will traverse the defaults of the current class and all its parent classes.
* Called by the constructor when creating new records.
*
* @uses DataExtension->populateDefaults()
* @return DataObject $this
*/
public function populateDefaults()
{
$classes = array_reverse(ClassInfo::ancestry($this));
foreach ($classes as $class) {
$defaults = Config::inst()->get($class, 'defaults', Config::UNINHERITED);
if ($defaults && !is_array($defaults)) {
user_error(
"Bad '" . static::class . "' defaults given: " . var_export($defaults, true),
E_USER_WARNING
);
$defaults = null;
}
if ($defaults) {
foreach ($defaults as $fieldName => $fieldValue) {
// SRM 2007-03-06: Stricter check
if (!isset($this->$fieldName) || $this->$fieldName === null) {
$this->$fieldName = $fieldValue;
}
// Set many-many defaults with an array of ids
if (is_array($fieldValue) && $this->getSchema()->manyManyComponent(static::class, $fieldName)) {
/** @var ManyManyList $manyManyJoin */
$manyManyJoin = $this->$fieldName();
$manyManyJoin->setByIDList($fieldValue);
}
}
}
if ($class == self::class) {
break;
}
}
$this->extend('populateDefaults');
return $this;
}
/**
* Determine validation of this object prior to write
*
* @return ValidationException Exception generated by this write, or null if valid
*/
protected function validateWrite()
{
if ($this->ObsoleteClassName) {
return new ValidationException(
"Object is of class '{$this->ObsoleteClassName}' which doesn't exist - " .
"you need to change the ClassName before you can write it"
);
}
// Note: Validation can only be disabled at the global level, not per-model
if (DataObject::config()->uninherited('validation_enabled')) {
$result = $this->validate();
if (!$result->isValid()) {
return new ValidationException($result);
}
}
return null;
}
/**
* Prepare an object prior to write
*
* @throws ValidationException
*/
protected function preWrite()
{
// Validate this object
if ($writeException = $this->validateWrite()) {
// Used by DODs to clean up after themselves, eg, Versioned
$this->invokeWithExtensions('onAfterSkippedWrite');
throw $writeException;
}
// Check onBeforeWrite
$this->brokenOnWrite = true;
$this->onBeforeWrite();
if ($this->brokenOnWrite) {
user_error(static::class . " has a broken onBeforeWrite() function."
. " Make sure that you call parent::onBeforeWrite().", E_USER_ERROR);
}
}
/**
* Detects and updates all changes made to this object
*
* @param bool $forceChanges If set to true, force all fields to be treated as changed
* @return bool True if any changes are detected
*/
protected function updateChanges($forceChanges = false)
{
if ($forceChanges) {
// Force changes, but only for loaded fields
foreach ($this->record as $field => $value) {
$this->changed[$field] = static::CHANGE_VALUE;
}
return true;
}
return $this->isChanged();
}
/**
* Writes a subset of changes for a specific table to the given manipulation
*
* @param string $baseTable Base table
* @param string $now Timestamp to use for the current time
* @param bool $isNewRecord Whether this should be treated as a new record write
* @param array $manipulation Manipulation to write to
* @param string $class Class of table to manipulate
*/
protected function prepareManipulationTable($baseTable, $now, $isNewRecord, &$manipulation, $class)
{
$schema = $this->getSchema();
$table = $schema->tableName($class);
$manipulation[$table] = array();
// Extract records for this table
foreach ($this->record as $fieldName => $fieldValue) {
// we're not attempting to reset the BaseTable->ID
// Ignore unchanged fields or attempts to reset the BaseTable->ID
if (empty($this->changed[$fieldName]) || ($table === $baseTable && $fieldName === 'ID')) {
continue;
}
// Ensure this field pertains to this table
$specification = $schema->fieldSpec($class, $fieldName, DataObjectSchema::DB_ONLY | DataObjectSchema::UNINHERITED);
if (!$specification) {
continue;
}
// if database column doesn't correlate to a DBField instance...
$fieldObj = $this->dbObject($fieldName);
if (!$fieldObj) {
$fieldObj = DBField::create_field('Varchar', $fieldValue, $fieldName);
}
// Write to manipulation
$fieldObj->writeToManipulation($manipulation[$table]);
}
// Ensure update of Created and LastEdited columns
if ($baseTable === $table) {
$manipulation[$table]['fields']['LastEdited'] = $now;
if ($isNewRecord) {
$manipulation[$table]['fields']['Created']
= empty($this->record['Created'])
? $now
: $this->record['Created'];
$manipulation[$table]['fields']['ClassName'] = static::class;
}
}
// Inserts done one the base table are performed in another step, so the manipulation should instead
// attempt an update, as though it were a normal update.
$manipulation[$table]['command'] = $isNewRecord ? 'insert' : 'update';
$manipulation[$table]['id'] = $this->record['ID'];
$manipulation[$table]['class'] = $class;
}
/**
* Ensures that a blank base record exists with the basic fixed fields for this dataobject
*
* Does nothing if an ID is already assigned for this record
*
* @param string $baseTable Base table
* @param string $now Timestamp to use for the current time
*/
protected function writeBaseRecord($baseTable, $now)
{
// Generate new ID if not specified
if ($this->isInDB()) {
return;
}
// Perform an insert on the base table
$insert = new SQLInsert('"' . $baseTable . '"');
$insert
->assign('"Created"', $now)
->execute();
$this->changed['ID'] = self::CHANGE_VALUE;
$this->record['ID'] = DB::get_generated_id($baseTable);
}
/**
* Generate and write the database manipulation for all changed fields
*
* @param string $baseTable Base table
* @param string $now Timestamp to use for the current time
* @param bool $isNewRecord If this is a new record
*/
protected function writeManipulation($baseTable, $now, $isNewRecord)
{
// Generate database manipulations for each class
$manipulation = array();
foreach (ClassInfo::ancestry(static::class, true) as $class) {
$this->prepareManipulationTable($baseTable, $now, $isNewRecord, $manipulation, $class);
}
// Allow extensions to extend this manipulation
$this->extend('augmentWrite', $manipulation);
// New records have their insert into the base data table done first, so that they can pass the
// generated ID on to the rest of the manipulation
if ($isNewRecord) {
$manipulation[$baseTable]['command'] = 'update';
}
// Perform the manipulation
DB::manipulate($manipulation);
}
/**
* Writes all changes to this object to the database.
* - It will insert a record whenever ID isn't set, otherwise update.
* - All relevant tables will be updated.
* - $this->onBeforeWrite() gets called beforehand.
* - Extensions such as Versioned will ammend the database-write to ensure that a version is saved.
*
* @uses DataExtension->augmentWrite()
*
* @param boolean $showDebug Show debugging information
* @param boolean $forceInsert Run INSERT command rather than UPDATE, even if record already exists
* @param boolean $forceWrite Write to database even if there are no changes
* @param boolean $writeComponents Call write() on all associated component instances which were previously
* retrieved through {@link getComponent()}, {@link getComponents()} or
* {@link getManyManyComponents()} (Default: false)
* @return int The ID of the record
* @throws ValidationException Exception that can be caught and handled by the calling function
*/
public function write($showDebug = false, $forceInsert = false, $forceWrite = false, $writeComponents = false)
{
$now = DBDatetime::now()->Rfc2822();
// Execute pre-write tasks
$this->preWrite();
// Check if we are doing an update or an insert
$isNewRecord = !$this->isInDB() || $forceInsert;
// Check changes exist, abort if there are none
$hasChanges = $this->updateChanges($isNewRecord);
if ($hasChanges || $forceWrite || $isNewRecord) {
// Ensure Created and LastEdited are populated
if (!isset($this->record['Created'])) {
$this->record['Created'] = $now;
}
$this->record['LastEdited'] = $now;
// New records have their insert into the base data table done first, so that they can pass the
// generated primary key on to the rest of the manipulation
$baseTable = $this->baseTable();
$this->writeBaseRecord($baseTable, $now);
// Write the DB manipulation for all changed fields
$this->writeManipulation($baseTable, $now, $isNewRecord);
// If there's any relations that couldn't be saved before, save them now (we have an ID here)
$this->writeRelations();
$this->onAfterWrite();
$this->changed = array();
} else {
if ($showDebug) {
Debug::message("no changes for DataObject");
}
// Used by DODs to clean up after themselves, eg, Versioned
$this->invokeWithExtensions('onAfterSkippedWrite');
}
// Write relations as necessary
if ($writeComponents) {
$this->writeComponents(true);
}
// Clears the cache for this object so get_one returns the correct object.
$this->flushCache();
return $this->record['ID'];
}
/**
* Writes cached relation lists to the database, if possible
*/
public function writeRelations()
{
if (!$this->isInDB()) {
return;
}
// If there's any relations that couldn't be saved before, save them now (we have an ID here)
if ($this->unsavedRelations) {
foreach ($this->unsavedRelations as $name => $list) {
$list->changeToList($this->$name());
}
$this->unsavedRelations = array();
}
}
/**
* Write the cached components to the database. Cached components could refer to two different instances of the
* same record.
*
* @param bool $recursive Recursively write components
* @return DataObject $this
*/
public function writeComponents($recursive = false)
{
if ($this->components) {
foreach ($this->components as $component) {
$component->write(false, false, false, $recursive);
}
}
if ($join = $this->getJoin()) {
$join->write(false, false, false, $recursive);
}
return $this;
}
/**
* Delete this data object.
* $this->onBeforeDelete() gets called.
* Note that in Versioned objects, both Stage and Live will be deleted.
* @uses DataExtension->augmentSQL()
*/
public function delete()
{
$this->brokenOnDelete = true;
$this->onBeforeDelete();
if ($this->brokenOnDelete) {
user_error(static::class . " has a broken onBeforeDelete() function."
. " Make sure that you call parent::onBeforeDelete().", E_USER_ERROR);
}
// Deleting a record without an ID shouldn't do anything
if (!$this->ID) {
throw new LogicException("DataObject::delete() called on a DataObject without an ID");
}
// TODO: This is quite ugly. To improve:
// - move the details of the delete code in the DataQuery system
// - update the code to just delete the base table, and rely on cascading deletes in the DB to do the rest
// obviously, that means getting requireTable() to configure cascading deletes ;-)
$srcQuery = DataList::create(static::class)
->filter('ID', $this->ID)
->dataQuery()
->query();
$queriedTables = $srcQuery->queriedTables();
$this->extend('updateDeleteTables', $queriedTables, $srcQuery);
foreach ($queriedTables as $table) {
$delete = SQLDelete::create("\"$table\"", array('"ID"' => $this->ID));
$this->extend('updateDeleteTable', $delete, $table, $queriedTables, $srcQuery);
$delete->execute();
}
// Remove this item out of any caches
$this->flushCache();
$this->onAfterDelete();
$this->OldID = $this->ID;
$this->ID = 0;
}
/**
* Delete the record with the given ID.
*
* @param string $className The class name of the record to be deleted
* @param int $id ID of record to be deleted
*/
public static function delete_by_id($className, $id)
{
$obj = DataObject::get_by_id($className, $id);
if ($obj) {
$obj->delete();
} else {
user_error("$className object #$id wasn't found when calling DataObject::delete_by_id", E_USER_WARNING);
}
}
/**
* Get the class ancestry, including the current class name.
* The ancestry will be returned as an array of class names, where the 0th element
* will be the class that inherits directly from DataObject, and the last element
* will be the current class.
*
* @return array Class ancestry
*/
public function getClassAncestry()
{
return ClassInfo::ancestry(static::class);
}
/**
* Return a component object from a one to one relationship, as a DataObject.
* If no component is available, an 'empty component' will be returned for
* non-polymorphic relations, or for polymorphic relations with a class set.
*
* @param string $componentName Name of the component
* @return DataObject The component object. It's exact type will be that of the component.
* @throws Exception
*/
public function getComponent($componentName)
{
if (isset($this->components[$componentName])) {
return $this->components[$componentName];
}
$schema = static::getSchema();
if ($class = $schema->hasOneComponent(static::class, $componentName)) {
$joinField = $componentName . 'ID';
$joinID = $this->getField($joinField);
// Extract class name for polymorphic relations
if ($class === self::class) {
$class = $this->getField($componentName . 'Class');
if (empty($class)) {
return null;
}
}
if ($joinID) {
// Ensure that the selected object originates from the same stage, subsite, etc
$component = DataObject::get($class)
->filter('ID', $joinID)
->setDataQueryParam($this->getInheritableQueryParams())
->first();
}
if (empty($component)) {
$component = Injector::inst()->create($class);
}
} elseif ($class = $schema->belongsToComponent(static::class, $componentName)) {
$joinField = $schema->getRemoteJoinField(static::class, $componentName, 'belongs_to', $polymorphic);
$joinID = $this->ID;
if ($joinID) {
// Prepare filter for appropriate join type
if ($polymorphic) {
$filter = array(
"{$joinField}ID" => $joinID,
"{$joinField}Class" => static::class,
);
} else {
$filter = array(
$joinField => $joinID
);
}
// Ensure that the selected object originates from the same stage, subsite, etc
$component = DataObject::get($class)
->filter($filter)
->setDataQueryParam($this->getInheritableQueryParams())
->first();
}
if (empty($component)) {
$component = Injector::inst()->create($class);
if ($polymorphic) {
$component->{$joinField . 'ID'} = $this->ID;
$component->{$joinField . 'Class'} = static::class;
} else {
$component->$joinField = $this->ID;
}
}
} else {
throw new InvalidArgumentException(
"DataObject->getComponent(): Could not find component '$componentName'."
);
}
$this->components[$componentName] = $component;
return $component;
}
/**
* Returns a one-to-many relation as a HasManyList
*
* @param string $componentName Name of the component
* @return HasManyList|UnsavedRelationList The components of the one-to-many relationship.
*/
public function getComponents($componentName)
{
$result = null;
$schema = $this->getSchema();
$componentClass = $schema->hasManyComponent(static::class, $componentName);
if (!$componentClass) {
throw new InvalidArgumentException(sprintf(
"DataObject::getComponents(): Unknown 1-to-many component '%s' on class '%s'",
$componentName,
static::class
));
}
// If we haven't been written yet, we can't save these relations, so use a list that handles this case
if (!$this->ID) {
if (!isset($this->unsavedRelations[$componentName])) {
$this->unsavedRelations[$componentName] =
new UnsavedRelationList(static::class, $componentName, $componentClass);
}
return $this->unsavedRelations[$componentName];
}
// Determine type and nature of foreign relation
$joinField = $schema->getRemoteJoinField(static::class, $componentName, 'has_many', $polymorphic);
/** @var HasManyList $result */
if ($polymorphic) {
$result = PolymorphicHasManyList::create($componentClass, $joinField, static::class);
} else {
$result = HasManyList::create($componentClass, $joinField);
}
return $result
->setDataQueryParam($this->getInheritableQueryParams())
->forForeignID($this->ID);
}
/**
* Find the foreign class of a relation on this DataObject, regardless of the relation type.
*
* @param string $relationName Relation name.
* @return string Class name, or null if not found.
*/
public function getRelationClass($relationName)
{
// Parse many_many
$manyManyComponent = $this->getSchema()->manyManyComponent(static::class, $relationName);
if ($manyManyComponent) {
return $manyManyComponent['childClass'];
}
// Go through all relationship configuration fields.
$config = $this->config();
$candidates = array_merge(
($relations = $config->get('has_one')) ? $relations : array(),
($relations = $config->get('has_many')) ? $relations : array(),
($relations = $config->get('belongs_to')) ? $relations : array()
);
if (isset($candidates[$relationName])) {
$remoteClass = $candidates[$relationName];
// If dot notation is present, extract just the first part that contains the class.
if (($fieldPos = strpos($remoteClass, '.'))!==false) {
return substr($remoteClass, 0, $fieldPos);
}
// Otherwise just return the class
return $remoteClass;
}
return null;
}
/**
* Given a relation name, determine the relation type
*
* @param string $component Name of component
* @return string has_one, has_many, many_many, belongs_many_many or belongs_to
*/
public function getRelationType($component)
{
$types = array('has_one', 'has_many', 'many_many', 'belongs_many_many', 'belongs_to');
$config = $this->config();
foreach ($types as $type) {
$relations = $config->get($type);
if ($relations && isset($relations[$component])) {
return $type;
}
}
return null;
}
/**
* Given a relation declared on a remote class, generate a substitute component for the opposite
* side of the relation.
*
* Notes on behaviour:
* - This can still be used on components that are defined on both sides, but do not need to be.
* - All has_ones on remote class will be treated as local has_many, even if they are belongs_to
* - Cannot be used on polymorphic relationships
* - Cannot be used on unsaved objects.
*
* @param string $remoteClass
* @param string $remoteRelation
* @return DataList|DataObject The component, either as a list or single object
* @throws BadMethodCallException
* @throws InvalidArgumentException
*/
public function inferReciprocalComponent($remoteClass, $remoteRelation)
{
$remote = DataObject::singleton($remoteClass);
$class = $remote->getRelationClass($remoteRelation);
$schema = static::getSchema();
// Validate arguments
if (!$this->isInDB()) {
throw new BadMethodCallException(__METHOD__ . " cannot be called on unsaved objects");
}
if (empty($class)) {
throw new InvalidArgumentException(sprintf(
"%s invoked with invalid relation %s.%s",
__METHOD__,
$remoteClass,
$remoteRelation
));
}
if ($class === self::class) {
throw new InvalidArgumentException(sprintf(
"%s cannot generate opposite component of relation %s.%s as it is polymorphic. " .
"This method does not support polymorphic relationships",
__METHOD__,
$remoteClass,
$remoteRelation
));
}
if (!is_a($this, $class, true)) {
throw new InvalidArgumentException(sprintf(
"Relation %s on %s does not refer to objects of type %s",
$remoteRelation,
$remoteClass,
static::class
));
}
// Check the relation type to mock
$relationType = $remote->getRelationType($remoteRelation);
switch ($relationType) {
case 'has_one': {
// Mock has_many
$joinField = "{$remoteRelation}ID";
$componentClass = $schema->classForField($remoteClass, $joinField);
$result = HasManyList::create($componentClass, $joinField);
return $result
->setDataQueryParam($this->getInheritableQueryParams())
->forForeignID($this->ID);
}
case 'belongs_to':
case 'has_many': {
// These relations must have a has_one on the other end, so find it
$joinField = $schema->getRemoteJoinField($remoteClass, $remoteRelation, $relationType, $polymorphic);
if ($polymorphic) {
throw new InvalidArgumentException(sprintf(
"%s cannot generate opposite component of relation %s.%s, as the other end appears" .
"to be a has_one polymorphic. This method does not support polymorphic relationships",
__METHOD__,
$remoteClass,
$remoteRelation
));
}
$joinID = $this->getField($joinField);
if (empty($joinID)) {
return null;
}
// Get object by joined ID
return DataObject::get($remoteClass)
->filter('ID', $joinID)
->setDataQueryParam($this->getInheritableQueryParams())
->first();
}
case 'many_many':
case 'belongs_many_many': {
// Get components and extra fields from parent
$manyMany = $remote->getSchema()->manyManyComponent($remoteClass, $remoteRelation);
$extraFields = $schema->manyManyExtraFieldsForComponent($remoteClass, $remoteRelation) ?: array();
// Reverse parent and component fields and create an inverse ManyManyList
/** @var RelationList $result */
$result = Injector::inst()->create(
$manyMany['relationClass'],
$manyMany['parentClass'], // Substitute parent class for dataClass
$manyMany['join'],
$manyMany['parentField'], // Reversed parent / child field
$manyMany['childField'], // Reversed parent / child field
$extraFields
);
$this->extend('updateManyManyComponents', $result);
// If this is called on a singleton, then we return an 'orphaned relation' that can have the
// foreignID set elsewhere.
return $result
->setDataQueryParam($this->getInheritableQueryParams())
->forForeignID($this->ID);
}
default: {
return null;
}
}
}
/**
* Returns a many-to-many component, as a ManyManyList.
* @param string $componentName Name of the many-many component
* @return RelationList|UnsavedRelationList The set of components
*/
public function getManyManyComponents($componentName)
{
$schema = static::getSchema();
$manyManyComponent = $schema->manyManyComponent(static::class, $componentName);
if (!$manyManyComponent) {
throw new InvalidArgumentException(sprintf(
"DataObject::getComponents(): Unknown many-to-many component '%s' on class '%s'",
$componentName,
static::class
));
}
// If we haven't been written yet, we can't save these relations, so use a list that handles this case
if (!$this->ID) {
if (!isset($this->unsavedRelations[$componentName])) {
$this->unsavedRelations[$componentName] =
new UnsavedRelationList($manyManyComponent['parentClass'], $componentName, $manyManyComponent['childClass']);
}
return $this->unsavedRelations[$componentName];
}
$extraFields = $schema->manyManyExtraFieldsForComponent(static::class, $componentName) ?: array();
/** @var RelationList $result */
$result = Injector::inst()->create(
$manyManyComponent['relationClass'],
$manyManyComponent['childClass'],
$manyManyComponent['join'],
$manyManyComponent['childField'],
$manyManyComponent['parentField'],
$extraFields
);
// Store component data in query meta-data
$result = $result->alterDataQuery(function ($query) use ($extraFields) {
/** @var DataQuery $query */
$query->setQueryParam('Component.ExtraFields', $extraFields);
});
$this->extend('updateManyManyComponents', $result);
// If this is called on a singleton, then we return an 'orphaned relation' that can have the
// foreignID set elsewhere.
return $result
->setDataQueryParam($this->getInheritableQueryParams())
->forForeignID($this->ID);
}
/**
* Return the class of a one-to-one component. If $component is null, return all of the one-to-one components and
* their classes. If the selected has_one is a polymorphic field then 'DataObject' will be returned for the type.
*
* @return string|array The class of the one-to-one component, or an array of all one-to-one components and
* their classes.
*/
public function hasOne()
{
return (array)$this->config()->get('has_one');
}
/**
* Returns the class of a remote belongs_to relationship. If no component is specified a map of all components and
* their class name will be returned.
*
* @param bool $classOnly If this is TRUE, than any has_many relationships in the form "ClassName.Field" will have
* the field data stripped off. It defaults to TRUE.
* @return string|array
*/
public function belongsTo($classOnly = true)
{
$belongsTo = (array)$this->config()->get('belongs_to');
if ($belongsTo && $classOnly) {
return preg_replace('/(.+)?\..+/', '$1', $belongsTo);
} else {
return $belongsTo ? $belongsTo : array();
}
}
/**
* Gets the class of a one-to-many relationship. If no $component is specified then an array of all the one-to-many
* relationships and their classes will be returned.
*
* @param bool $classOnly If this is TRUE, than any has_many relationships in the form "ClassName.Field" will have
* the field data stripped off. It defaults to TRUE.
* @return string|array|false
*/
public function hasMany($classOnly = true)
{
$hasMany = (array)$this->config()->get('has_many');
if ($hasMany && $classOnly) {
return preg_replace('/(.+)?\..+/', '$1', $hasMany);
} else {
return $hasMany ? $hasMany : array();
}
}
/**
* Return the many-to-many extra fields specification.
*
* If you don't specify a component name, it returns all
* extra fields for all components available.
*
* @return array|null
*/
public function manyManyExtraFields()
{
return $this->config()->get('many_many_extraFields');
}
/**
* Return information about a many-to-many component.
* The return value is an array of (parentclass, childclass). If $component is null, then all many-many
* components are returned.
*
* @see DataObjectSchema::manyManyComponent()
* @return array|null An array of (parentclass, childclass), or an array of all many-many components
*/
public function manyMany()
{
$config = $this->config();
$manyManys = (array)$config->get('many_many');
$belongsManyManys = (array)$config->get('belongs_many_many');
$items = array_merge($manyManys, $belongsManyManys);
return $items;
}
/**
* This returns an array (if it exists) describing the database extensions that are required, or false if none
*
* This is experimental, and is currently only a Postgres-specific enhancement.
*
* @param string $class
* @return array|false
*/
public function database_extensions($class)
{
$extensions = Config::inst()->get($class, 'database_extensions', Config::UNINHERITED);
if ($extensions) {
return $extensions;
} else {
return false;
}
}
/**
* Generates a SearchContext to be used for building and processing
* a generic search form for properties on this object.
*
* @return SearchContext
*/
public function getDefaultSearchContext()
{
return new SearchContext(
static::class,
$this->scaffoldSearchFields(),
$this->defaultSearchFilters()
);
}
/**
* Determine which properties on the DataObject are
* searchable, and map them to their default {@link FormField}
* representations. Used for scaffolding a searchform for {@link ModelAdmin}.
*
* Some additional logic is included for switching field labels, based on
* how generic or specific the field type is.
*
* Used by {@link SearchContext}.
*
* @param array $_params
* 'fieldClasses': Associative array of field names as keys and FormField classes as values
* 'restrictFields': Numeric array of a field name whitelist
* @return FieldList
*/
public function scaffoldSearchFields($_params = null)
{
$params = array_merge(
array(
'fieldClasses' => false,
'restrictFields' => false
),
(array)$_params
);
$fields = new FieldList();
foreach ($this->searchableFields() as $fieldName => $spec) {
if ($params['restrictFields'] && !in_array($fieldName, $params['restrictFields'])) {
continue;
}
// If a custom fieldclass is provided as a string, use it
$field = null;
if ($params['fieldClasses'] && isset($params['fieldClasses'][$fieldName])) {
$fieldClass = $params['fieldClasses'][$fieldName];
$field = new $fieldClass($fieldName);
// If we explicitly set a field, then construct that
} elseif (isset($spec['field'])) {
// If it's a string, use it as a class name and construct
if (is_string($spec['field'])) {
$fieldClass = $spec['field'];
$field = new $fieldClass($fieldName);
// If it's a FormField object, then just use that object directly.
} elseif ($spec['field'] instanceof FormField) {
$field = $spec['field'];
// Otherwise we have a bug
} else {
user_error("Bad value for searchable_fields, 'field' value: "
. var_export($spec['field'], true), E_USER_WARNING);
}
// Otherwise, use the database field's scaffolder
} else {
$field = $this->relObject($fieldName)->scaffoldSearchField();
}
// Allow fields to opt out of search
if (!$field) {
continue;
}
if (strstr($fieldName, '.')) {
$field->setName(str_replace('.', '__', $fieldName));
}
$field->setTitle($spec['title']);
$fields->push($field);
}
return $fields;
}
/**
* Scaffold a simple edit form for all properties on this dataobject,
* based on default {@link FormField} mapping in {@link DBField::scaffoldFormField()}.
* Field labels/titles will be auto generated from {@link DataObject::fieldLabels()}.
*
* @uses FormScaffolder
*
* @param array $_params Associative array passing through properties to {@link FormScaffolder}.
* @return FieldList
*/
public function scaffoldFormFields($_params = null)
{
$params = array_merge(
array(
'tabbed' => false,
'includeRelations' => false,
'restrictFields' => false,
'fieldClasses' => false,
'ajaxSafe' => false
),
(array)$_params
);
$fs = FormScaffolder::create($this);
$fs->tabbed = $params['tabbed'];
$fs->includeRelations = $params['includeRelations'];
$fs->restrictFields = $params['restrictFields'];
$fs->fieldClasses = $params['fieldClasses'];
$fs->ajaxSafe = $params['ajaxSafe'];
return $fs->getFieldList();
}
/**
* Allows user code to hook into DataObject::getCMSFields prior to updateCMSFields
* being called on extensions
*
* @param callable $callback The callback to execute
*/
protected function beforeUpdateCMSFields($callback)
{
$this->beforeExtending('updateCMSFields', $callback);
}
/**
* Centerpiece of every data administration interface in Silverstripe,
* which returns a {@link FieldList} suitable for a {@link Form} object.
* If not overloaded, we're using {@link scaffoldFormFields()} to automatically
* generate this set. To customize, overload this method in a subclass
* or extended onto it by using {@link DataExtension->updateCMSFields()}.
*
*
* class MyCustomClass extends DataObject {
* static $db = array('CustomProperty'=>'Boolean');
*
* function getCMSFields() {
* $fields = parent::getCMSFields();
* $fields->addFieldToTab('Root.Content',new CheckboxField('CustomProperty'));
* return $fields;
* }
* }
*
*
* @see Good example of complex FormField building: SiteTree::getCMSFields()
*
* @return FieldList Returns a TabSet for usage within the CMS - don't use for frontend forms.
*/
public function getCMSFields()
{
$tabbedFields = $this->scaffoldFormFields(array(
// Don't allow has_many/many_many relationship editing before the record is first saved
'includeRelations' => ($this->ID > 0),
'tabbed' => true,
'ajaxSafe' => true
));
$this->extend('updateCMSFields', $tabbedFields);
return $tabbedFields;
}
/**
* need to be overload by solid dataobject, so that the customised actions of that dataobject,
* including that dataobject's extensions customised actions could be added to the EditForm.
*
* @return FieldList an Empty FieldList(); need to be overload by solid subclass
*/
public function getCMSActions()
{
$actions = new FieldList();
$this->extend('updateCMSActions', $actions);
return $actions;
}
/**
* Used for simple frontend forms without relation editing
* or {@link TabSet} behaviour. Uses {@link scaffoldFormFields()}
* by default. To customize, either overload this method in your
* subclass, or extend it by {@link DataExtension->updateFrontEndFields()}.
*
* @todo Decide on naming for "website|frontend|site|page" and stick with it in the API
*
* @param array $params See {@link scaffoldFormFields()}
* @return FieldList Always returns a simple field collection without TabSet.
*/
public function getFrontEndFields($params = null)
{
$untabbedFields = $this->scaffoldFormFields($params);
$this->extend('updateFrontEndFields', $untabbedFields);
return $untabbedFields;
}
public function getViewerTemplates($suffix = '')
{
return SSViewer::get_templates_by_class(static::class, $suffix, $this->baseClass());
}
/**
* Gets the value of a field.
* Called by {@link __get()} and any getFieldName() methods you might create.
*
* @param string $field The name of the field
* @return mixed The field value
*/
public function getField($field)
{
// If we already have an object in $this->record, then we should just return that
if (isset($this->record[$field]) && is_object($this->record[$field])) {
return $this->record[$field];
}
// Do we have a field that needs to be lazy loaded?
if (isset($this->record[$field . '_Lazy'])) {
$tableClass = $this->record[$field . '_Lazy'];
$this->loadLazyFields($tableClass);
}
// In case of complex fields, return the DBField object
if (static::getSchema()->compositeField(static::class, $field)) {
$this->record[$field] = $this->dbObject($field);
}
return isset($this->record[$field]) ? $this->record[$field] : null;
}
/**
* Loads all the stub fields that an initial lazy load didn't load fully.
*
* @param string $class Class to load the values from. Others are joined as required.
* Not specifying a tableClass will load all lazy fields from all tables.
* @return bool Flag if lazy loading succeeded
*/
protected function loadLazyFields($class = null)
{
if (!$this->isInDB() || !is_numeric($this->ID)) {
return false;
}
if (!$class) {
$loaded = array();
foreach ($this->record as $key => $value) {
if (strlen($key) > 5 && substr($key, -5) == '_Lazy' && !array_key_exists($value, $loaded)) {
$this->loadLazyFields($value);
$loaded[$value] = $value;
}
}
return false;
}
$dataQuery = new DataQuery($class);
// Reset query parameter context to that of this DataObject
if ($params = $this->getSourceQueryParams()) {
foreach ($params as $key => $value) {
$dataQuery->setQueryParam($key, $value);
}
}
// Limit query to the current record, unless it has the Versioned extension,
// in which case it requires special handling through augmentLoadLazyFields()
$schema = static::getSchema();
$baseIDColumn = $schema->sqlColumnForField($this, 'ID');
$dataQuery->where([
$baseIDColumn => $this->record['ID']
])->limit(1);
$columns = array();
// Add SQL for fields, both simple & multi-value
// TODO: This is copy & pasted from buildSQL(), it could be moved into a method
$databaseFields = $schema->databaseFields($class, false);
foreach ($databaseFields as $k => $v) {
if (!isset($this->record[$k]) || $this->record[$k] === null) {
$columns[] = $k;
}
}
if ($columns) {
$query = $dataQuery->query();
$this->extend('augmentLoadLazyFields', $query, $dataQuery, $this);
$this->extend('augmentSQL', $query, $dataQuery);
$dataQuery->setQueriedColumns($columns);
$newData = $dataQuery->execute()->record();
// Load the data into record
if ($newData) {
foreach ($newData as $k => $v) {
if (in_array($k, $columns)) {
$this->record[$k] = $v;
$this->original[$k] = $v;
unset($this->record[$k . '_Lazy']);
}
}
// No data means that the query returned nothing; assign 'null' to all the requested fields
} else {
foreach ($columns as $k) {
$this->record[$k] = null;
$this->original[$k] = null;
unset($this->record[$k . '_Lazy']);
}
}
}
return true;
}
/**
* Return the fields that have changed.
*
* The change level affects what the functions defines as "changed":
* - Level CHANGE_STRICT (integer 1) will return strict changes, even !== ones.
* - Level CHANGE_VALUE (integer 2) is more lenient, it will only return real data changes,
* for example a change from 0 to null would not be included.
*
* Example return:
*
* array(
* 'Title' = array('before' => 'Home', 'after' => 'Home-Changed', 'level' => DataObject::CHANGE_VALUE)
* )
*
*
* @param boolean|array $databaseFieldsOnly Filter to determine which fields to return. Set to true
* to return all database fields, or an array for an explicit filter. false returns all fields.
* @param int $changeLevel The strictness of what is defined as change. Defaults to strict
* @return array
*/
public function getChangedFields($databaseFieldsOnly = false, $changeLevel = self::CHANGE_STRICT)
{
$changedFields = array();
// Update the changed array with references to changed obj-fields
foreach ($this->record as $k => $v) {
// Prevents DBComposite infinite looping on isChanged
if (is_array($databaseFieldsOnly) && !in_array($k, $databaseFieldsOnly)) {
continue;
}
if (is_object($v) && method_exists($v, 'isChanged') && $v->isChanged()) {
$this->changed[$k] = self::CHANGE_VALUE;
}
}
if (is_array($databaseFieldsOnly)) {
$fields = array_intersect_key((array)$this->changed, array_flip($databaseFieldsOnly));
} elseif ($databaseFieldsOnly) {
$fieldsSpecs = static::getSchema()->fieldSpecs(static::class);
$fields = array_intersect_key((array)$this->changed, $fieldsSpecs);
} else {
$fields = $this->changed;
}
// Filter the list to those of a certain change level
if ($changeLevel > self::CHANGE_STRICT) {
if ($fields) {
foreach ($fields as $name => $level) {
if ($level < $changeLevel) {
unset($fields[$name]);
}
}
}
}
if ($fields) {
foreach ($fields as $name => $level) {
$changedFields[$name] = array(
'before' => array_key_exists($name, $this->original) ? $this->original[$name] : null,
'after' => array_key_exists($name, $this->record) ? $this->record[$name] : null,
'level' => $level
);
}
}
return $changedFields;
}
/**
* Uses {@link getChangedFields()} to determine if fields have been changed
* since loading them from the database.
*
* @param string $fieldName Name of the database field to check, will check for any if not given
* @param int $changeLevel See {@link getChangedFields()}
* @return boolean
*/
public function isChanged($fieldName = null, $changeLevel = self::CHANGE_STRICT)
{
$fields = $fieldName ? array($fieldName) : true;
$changed = $this->getChangedFields($fields, $changeLevel);
if (!isset($fieldName)) {
return !empty($changed);
} else {
return array_key_exists($fieldName, $changed);
}
}
/**
* Set the value of the field
* Called by {@link __set()} and any setFieldName() methods you might create.
*
* @param string $fieldName Name of the field
* @param mixed $val New field value
* @return $this
*/
public function setField($fieldName, $val)
{
$this->objCacheClear();
//if it's a has_one component, destroy the cache
if (substr($fieldName, -2) == 'ID') {
unset($this->components[substr($fieldName, 0, -2)]);
}
// If we've just lazy-loaded the column, then we need to populate the $original array
if (isset($this->record[$fieldName . '_Lazy'])) {
$tableClass = $this->record[$fieldName . '_Lazy'];
$this->loadLazyFields($tableClass);
}
// Situation 1: Passing an DBField
if ($val instanceof DBField) {
$val->setName($fieldName);
$val->saveInto($this);
// Situation 1a: Composite fields should remain bound in case they are
// later referenced to update the parent dataobject
if ($val instanceof DBComposite) {
$val->bindTo($this);
$this->record[$fieldName] = $val;
}
// Situation 2: Passing a literal or non-DBField object
} else {
// If this is a proper database field, we shouldn't be getting non-DBField objects
if (is_object($val) && static::getSchema()->fieldSpec(static::class, $fieldName)) {
throw new InvalidArgumentException('DataObject::setField: passed an object that is not a DBField');
}
// if a field is not existing or has strictly changed
if (!isset($this->record[$fieldName]) || $this->record[$fieldName] !== $val) {
// TODO Add check for php-level defaults which are not set in the db
// TODO Add check for hidden input-fields (readonly) which are not set in the db
// At the very least, the type has changed
$this->changed[$fieldName] = self::CHANGE_STRICT;
if ((!isset($this->record[$fieldName]) && $val)
|| (isset($this->record[$fieldName]) && $this->record[$fieldName] != $val)
) {
// Value has changed as well, not just the type
$this->changed[$fieldName] = self::CHANGE_VALUE;
}
// Value is always saved back when strict check succeeds.
$this->record[$fieldName] = $val;
}
}
return $this;
}
/**
* Set the value of the field, using a casting object.
* This is useful when you aren't sure that a date is in SQL format, for example.
* setCastedField() can also be used, by forms, to set related data. For example, uploaded images
* can be saved into the Image table.
*
* @param string $fieldName Name of the field
* @param mixed $value New field value
* @return $this
*/
public function setCastedField($fieldName, $value)
{
if (!$fieldName) {
user_error("DataObject::setCastedField: Called without a fieldName", E_USER_ERROR);
}
$fieldObj = $this->dbObject($fieldName);
if ($fieldObj) {
$fieldObj->setValue($value);
$fieldObj->saveInto($this);
} else {
$this->$fieldName = $value;
}
return $this;
}
/**
* {@inheritdoc}
*/
public function castingHelper($field)
{
$fieldSpec = static::getSchema()->fieldSpec(static::class, $field);
if ($fieldSpec) {
return $fieldSpec;
}
// many_many_extraFields aren't presented by db(), so we check if the source query params
// provide us with meta-data for a many_many relation we can inspect for extra fields.
$queryParams = $this->getSourceQueryParams();
if (!empty($queryParams['Component.ExtraFields'])) {
$extraFields = $queryParams['Component.ExtraFields'];
if (isset($extraFields[$field])) {
return $extraFields[$field];
}
}
return parent::castingHelper($field);
}
/**
* Returns true if the given field exists in a database column on any of
* the objects tables and optionally look up a dynamic getter with
* get().
*
* @param string $field Name of the field
* @return boolean True if the given field exists
*/
public function hasField($field)
{
$schema = static::getSchema();
return (
array_key_exists($field, $this->record)
|| $schema->fieldSpec(static::class, $field)
|| (substr($field, -2) == 'ID') && $schema->hasOneComponent(static::class, substr($field, 0, -2))
|| $this->hasMethod("get{$field}")
);
}
/**
* Returns true if the given field exists as a database column
*
* @param string $field Name of the field
*
* @return boolean
*/
public function hasDatabaseField($field)
{
$spec = static::getSchema()->fieldSpec(static::class, $field, DataObjectSchema::DB_ONLY);
return !empty($spec);
}
/**
* Returns true if the member is allowed to do the given action.
* See {@link extendedCan()} for a more versatile tri-state permission control.
*
* @param string $perm The permission to be checked, such as 'View'.
* @param Member $member The member whose permissions need checking. Defaults to the currently logged
* in user.
* @param array $context Additional $context to pass to extendedCan()
*
* @return boolean True if the the member is allowed to do the given action
*/
public function can($perm, $member = null, $context = array())
{
if (!$member) {
$member = Security::getCurrentUser();
}
if ($member && Permission::checkMember($member, "ADMIN")) {
return true;
}
if (is_string($perm) && method_exists($this, 'can' . ucfirst($perm))) {
$method = 'can' . ucfirst($perm);
return $this->$method($member);
}
$results = $this->extendedCan('can', $member);
if (isset($results)) {
return $results;
}
return ($member && Permission::checkMember($member, $perm));
}
/**
* Process tri-state responses from permission-alterting extensions. The extensions are
* expected to return one of three values:
*
* - false: Disallow this permission, regardless of what other extensions say
* - true: Allow this permission, as long as no other extensions return false
* - NULL: Don't affect the outcome
*
* This method itself returns a tri-state value, and is designed to be used like this:
*
*
* $extended = $this->extendedCan('canDoSomething', $member);
* if($extended !== null) return $extended;
* else return $normalValue;
*
*
* @param string $methodName Method on the same object, e.g. {@link canEdit()}
* @param Member|int $member
* @param array $context Optional context
* @return boolean|null
*/
public function extendedCan($methodName, $member, $context = array())
{
$results = $this->extend($methodName, $member, $context);
if ($results && is_array($results)) {
// Remove NULLs
$results = array_filter($results, function ($v) {
return !is_null($v);
});
// If there are any non-NULL responses, then return the lowest one of them.
// If any explicitly deny the permission, then we don't get access
if ($results) {
return min($results);
}
}
return null;
}
/**
* @param Member $member
* @return boolean
*/
public function canView($member = null)
{
$extended = $this->extendedCan(__FUNCTION__, $member);
if ($extended !== null) {
return $extended;
}
return Permission::check('ADMIN', 'any', $member);
}
/**
* @param Member $member
* @return boolean
*/
public function canEdit($member = null)
{
$extended = $this->extendedCan(__FUNCTION__, $member);
if ($extended !== null) {
return $extended;
}
return Permission::check('ADMIN', 'any', $member);
}
/**
* @param Member $member
* @return boolean
*/
public function canDelete($member = null)
{
$extended = $this->extendedCan(__FUNCTION__, $member);
if ($extended !== null) {
return $extended;
}
return Permission::check('ADMIN', 'any', $member);
}
/**
* @param Member $member
* @param array $context Additional context-specific data which might
* affect whether (or where) this object could be created.
* @return boolean
*/
public function canCreate($member = null, $context = array())
{
$extended = $this->extendedCan(__FUNCTION__, $member, $context);
if ($extended !== null) {
return $extended;
}
return Permission::check('ADMIN', 'any', $member);
}
/**
* Debugging used by Debug::show()
*
* @return string HTML data representing this object
*/
public function debug()
{
$class = static::class;
$val = "Database record: {$class}
\n\n";
if ($this->record) {
foreach ($this->record as $fieldName => $fieldVal) {
$val .= "\t- $fieldName: " . Debug::text($fieldVal) . "
\n";
}
}
$val .= "
\n";
return $val;
}
/**
* Return the DBField object that represents the given field.
* This works similarly to obj() with 2 key differences:
* - it still returns an object even when the field has no value.
* - it only matches fields and not methods
* - it matches foreign keys generated by has_one relationships, eg, "ParentID"
*
* @param string $fieldName Name of the field
* @return DBField The field as a DBField object
*/
public function dbObject($fieldName)
{
// Check for field in DB
$schema = static::getSchema();
$helper = $schema->fieldSpec(static::class, $fieldName, DataObjectSchema::INCLUDE_CLASS);
if (!$helper) {
return null;
}
if (!isset($this->record[$fieldName]) && isset($this->record[$fieldName . '_Lazy'])) {
$tableClass = $this->record[$fieldName . '_Lazy'];
$this->loadLazyFields($tableClass);
}
$value = isset($this->record[$fieldName])
? $this->record[$fieldName]
: null;
// If we have a DBField object in $this->record, then return that
if ($value instanceof DBField) {
return $value;
}
list($class, $spec) = explode('.', $helper);
/** @var DBField $obj */
$table = $schema->tableName($class);
$obj = Injector::inst()->create($spec, $fieldName);
$obj->setTable($table);
$obj->setValue($value, $this, false);
return $obj;
}
/**
* Traverses to a DBField referenced by relationships between data objects.
*
* The path to the related field is specified with dot separated syntax
* (eg: Parent.Child.Child.FieldName).
*
* @param string $fieldPath
*
* @return mixed DBField of the field on the object or a DataList instance.
*/
public function relObject($fieldPath)
{
$object = null;
if (strpos($fieldPath, '.') !== false) {
$parts = explode('.', $fieldPath);
$fieldName = array_pop($parts);
// Traverse dot syntax
$component = $this;
foreach ($parts as $relation) {
if ($component instanceof SS_List) {
if (method_exists($component, $relation)) {
$component = $component->$relation();
} else {
/** @var DataList $component */
$component = $component->relation($relation);
}
} else {
$component = $component->$relation();
}
}
$object = $component->dbObject($fieldName);
} else {
$object = $this->dbObject($fieldPath);
}
return $object;
}
/**
* Traverses to a field referenced by relationships between data objects, returning the value
* The path to the related field is specified with dot separated syntax (eg: Parent.Child.Child.FieldName)
*
* @param $fieldName string
* @return string | null - will return null on a missing value
*/
public function relField($fieldName)
{
$component = $this;
// We're dealing with relations here so we traverse the dot syntax
if (strpos($fieldName, '.') !== false) {
$relations = explode('.', $fieldName);
$fieldName = array_pop($relations);
foreach ($relations as $relation) {
if (!$component) {
return null;
// Inspect $component for element $relation
} elseif ($component->hasMethod($relation)) {
// Check nested method
$component = $component->$relation();
} elseif ($component instanceof SS_List) {
// Select adjacent relation from DataList
/** @var DataList $component */
$component = $component->relation($relation);
} elseif ($component instanceof DataObject
&& ($dbObject = $component->dbObject($relation))
) {
// Select db object
$component = $dbObject;
} else {
user_error("$relation is not a relation/field on " . get_class($component), E_USER_ERROR);
}
}
}
// Bail if the component is null
if (!$component) {
return null;
}
if ($component->hasMethod($fieldName)) {
return $component->$fieldName();
}
return $component->$fieldName;
}
/**
* Temporary hack to return an association name, based on class, to get around the mangle
* of having to deal with reverse lookup of relationships to determine autogenerated foreign keys.
*
* @param string $className
* @return string
*/
public function getReverseAssociation($className)
{
if (is_array($this->manyMany())) {
$many_many = array_flip($this->manyMany());
if (array_key_exists($className, $many_many)) {
return $many_many[$className];
}
}
if (is_array($this->hasMany())) {
$has_many = array_flip($this->hasMany());
if (array_key_exists($className, $has_many)) {
return $has_many[$className];
}
}
if (is_array($this->hasOne())) {
$has_one = array_flip($this->hasOne());
if (array_key_exists($className, $has_one)) {
return $has_one[$className];
}
}
return false;
}
/**
* Return all objects matching the filter
* sub-classes are automatically selected and included
*
* @param string $callerClass The class of objects to be returned
* @param string|array $filter A filter to be inserted into the WHERE clause.
* Supports parameterised queries. See SQLSelect::addWhere() for syntax examples.
* @param string|array $sort A sort expression to be inserted into the ORDER
* BY clause. If omitted, self::$default_sort will be used.
* @param string $join Deprecated 3.0 Join clause. Use leftJoin($table, $joinClause) instead.
* @param string|array $limit A limit expression to be inserted into the LIMIT clause.
* @param string $containerClass The container class to return the results in.
*
* @todo $containerClass is Ignored, why?
*
* @return DataList The objects matching the filter, in the class specified by $containerClass
*/
public static function get(
$callerClass = null,
$filter = "",
$sort = "",
$join = "",
$limit = null,
$containerClass = DataList::class
) {
if ($callerClass == null) {
$callerClass = get_called_class();
if ($callerClass == self::class) {
throw new \InvalidArgumentException('Call ::get() instead of DataObject::get()');
}
if ($filter || $sort || $join || $limit || ($containerClass != DataList::class)) {
throw new \InvalidArgumentException('If calling ::get() then you shouldn\'t pass any other'
. ' arguments');
}
return DataList::create(get_called_class());
}
if ($join) {
throw new \InvalidArgumentException(
'The $join argument has been removed. Use leftJoin($table, $joinClause) instead.'
);
}
$result = DataList::create($callerClass)->where($filter)->sort($sort);
if ($limit && strpos($limit, ',') !== false) {
$limitArguments = explode(',', $limit);
$result = $result->limit($limitArguments[1], $limitArguments[0]);
} elseif ($limit) {
$result = $result->limit($limit);
}
return $result;
}
/**
* Return the first item matching the given query.
* All calls to get_one() are cached.
*
* @param string $callerClass The class of objects to be returned
* @param string|array $filter A filter to be inserted into the WHERE clause.
* Supports parameterised queries. See SQLSelect::addWhere() for syntax examples.
* @param boolean $cache Use caching
* @param string $orderby A sort expression to be inserted into the ORDER BY clause.
*
* @return DataObject|null The first item matching the query
*/
public static function get_one($callerClass, $filter = "", $cache = true, $orderby = "")
{
$SNG = singleton($callerClass);
$cacheComponents = array($filter, $orderby, $SNG->extend('cacheKeyComponent'));
$cacheKey = md5(serialize($cacheComponents));
$item = null;
if (!$cache || !isset(self::$_cache_get_one[$callerClass][$cacheKey])) {
$dl = DataObject::get($callerClass)->where($filter)->sort($orderby);
$item = $dl->first();
if ($cache) {
self::$_cache_get_one[$callerClass][$cacheKey] = $item;
if (!self::$_cache_get_one[$callerClass][$cacheKey]) {
self::$_cache_get_one[$callerClass][$cacheKey] = false;
}
}
}
if ($cache) {
return self::$_cache_get_one[$callerClass][$cacheKey] ?: null;
} else {
return $item;
}
}
/**
* Flush the cached results for all relations (has_one, has_many, many_many)
* Also clears any cached aggregate data.
*
* @param boolean $persistent When true will also clear persistent data stored in the Cache system.
* When false will just clear session-local cached data
* @return DataObject $this
*/
public function flushCache($persistent = true)
{
if (static::class == self::class) {
self::$_cache_get_one = array();
return $this;
}
$classes = ClassInfo::ancestry(static::class);
foreach ($classes as $class) {
if (isset(self::$_cache_get_one[$class])) {
unset(self::$_cache_get_one[$class]);
}
}
$this->extend('flushCache');
$this->components = array();
return $this;
}
/**
* Flush the get_one global cache and destroy associated objects.
*/
public static function flush_and_destroy_cache()
{
if (self::$_cache_get_one) {
foreach (self::$_cache_get_one as $class => $items) {
if (is_array($items)) {
foreach ($items as $item) {
if ($item) {
$item->destroy();
}
}
}
}
}
self::$_cache_get_one = array();
}
/**
* Reset all global caches associated with DataObject.
*/
public static function reset()
{
// @todo Decouple these
DBClassName::clear_classname_cache();
ClassInfo::reset_db_cache();
static::getSchema()->reset();
self::$_cache_get_one = array();
self::$_cache_field_labels = array();
}
/**
* Return the given element, searching by ID
*
* @param string $callerClass The class of the object to be returned
* @param int $id The id of the element
* @param boolean $cache See {@link get_one()}
*
* @return DataObject The element
*/
public static function get_by_id($callerClass, $id, $cache = true)
{
if (!is_numeric($id)) {
user_error("DataObject::get_by_id passed a non-numeric ID #$id", E_USER_WARNING);
}
// Pass to get_one
$column = static::getSchema()->sqlColumnForField($callerClass, 'ID');
return DataObject::get_one($callerClass, array($column => $id), $cache);
}
/**
* Get the name of the base table for this object
*
* @return string
*/
public function baseTable()
{
return static::getSchema()->baseDataTable($this);
}
/**
* Get the base class for this object
*
* @return string
*/
public function baseClass()
{
return static::getSchema()->baseDataClass($this);
}
/**
* @var array Parameters used in the query that built this object.
* This can be used by decorators (e.g. lazy loading) to
* run additional queries using the same context.
*/
protected $sourceQueryParams;
/**
* @see $sourceQueryParams
* @return array
*/
public function getSourceQueryParams()
{
return $this->sourceQueryParams;
}
/**
* Get list of parameters that should be inherited to relations on this object
*
* @return array
*/
public function getInheritableQueryParams()
{
$params = $this->getSourceQueryParams();
$this->extend('updateInheritableQueryParams', $params);
return $params;
}
/**
* @see $sourceQueryParams
* @param array
*/
public function setSourceQueryParams($array)
{
$this->sourceQueryParams = $array;
}
/**
* @see $sourceQueryParams
* @param string $key
* @param string $value
*/
public function setSourceQueryParam($key, $value)
{
$this->sourceQueryParams[$key] = $value;
}
/**
* @see $sourceQueryParams
* @param string $key
* @return string
*/
public function getSourceQueryParam($key)
{
if (isset($this->sourceQueryParams[$key])) {
return $this->sourceQueryParams[$key];
}
return null;
}
//-------------------------------------------------------------------------------------------//
/**
* Check the database schema and update it as necessary.
*
* @uses DataExtension->augmentDatabase()
*/
public function requireTable()
{
// Only build the table if we've actually got fields
$schema = static::getSchema();
$table = $schema->tableName(static::class);
$fields = $schema->databaseFields(static::class, false);
$indexes = $schema->databaseIndexes(static::class, false);
$extensions = self::database_extensions(static::class);
if (empty($table)) {
throw new LogicException(
"Class " . static::class . " not loaded by manifest, or no database table configured"
);
}
if ($fields) {
$hasAutoIncPK = get_parent_class($this) === self::class;
DB::require_table(
$table,
$fields,
$indexes,
$hasAutoIncPK,
$this->config()->get('create_table_options'),
$extensions
);
} else {
DB::dont_require_table($table);
}
// Build any child tables for many_many items
if ($manyMany = $this->uninherited('many_many')) {
$extras = $this->uninherited('many_many_extraFields');
foreach ($manyMany as $component => $spec) {
// Get many_many spec
$manyManyComponent = $schema->manyManyComponent(static::class, $component);
$parentField = $manyManyComponent['parentField'];
$childField = $manyManyComponent['childField'];
$tableOrClass = $manyManyComponent['join'];
// Skip if backed by actual class
if (class_exists($tableOrClass)) {
continue;
}
// Build fields
$manymanyFields = array(
$parentField => "Int",
$childField => "Int",
);
if (isset($extras[$component])) {
$manymanyFields = array_merge($manymanyFields, $extras[$component]);
}
// Build index list
$manymanyIndexes = [
$parentField => [
'type' => 'index',
'name' => $parentField,
'columns' => [$parentField],
],
$childField => [
'type' => 'index',
'name' =>$childField,
'columns' => [$childField],
],
];
DB::require_table($tableOrClass, $manymanyFields, $manymanyIndexes, true, null, $extensions);
}
}
// Let any extentions make their own database fields
$this->extend('augmentDatabase', $dummy);
}
/**
* Add default records to database. This function is called whenever the
* database is built, after the database tables have all been created. Overload
* this to add default records when the database is built, but make sure you
* call parent::requireDefaultRecords().
*
* @uses DataExtension->requireDefaultRecords()
*/
public function requireDefaultRecords()
{
$defaultRecords = $this->config()->uninherited('default_records');
if (!empty($defaultRecords)) {
$hasData = DataObject::get_one(static::class);
if (!$hasData) {
$className = static::class;
foreach ($defaultRecords as $record) {
$obj = Injector::inst()->create($className, $record);
$obj->write();
}
DB::alteration_message("Added default records to $className table", "created");
}
}
// Let any extentions make their own database default data
$this->extend('requireDefaultRecords', $dummy);
}
/**
* Get the default searchable fields for this object, as defined in the
* $searchable_fields list. If searchable fields are not defined on the
* data object, uses a default selection of summary fields.
*
* @return array
*/
public function searchableFields()
{
// can have mixed format, need to make consistent in most verbose form
$fields = $this->config()->get('searchable_fields');
$labels = $this->fieldLabels();
// fallback to summary fields (unless empty array is explicitly specified)
if (! $fields && ! is_array($fields)) {
$summaryFields = array_keys($this->summaryFields());
$fields = array();
// remove the custom getters as the search should not include them
$schema = static::getSchema();
if ($summaryFields) {
foreach ($summaryFields as $key => $name) {
$spec = $name;
// Extract field name in case this is a method called on a field (e.g. "Date.Nice")
if (($fieldPos = strpos($name, '.')) !== false) {
$name = substr($name, 0, $fieldPos);
}
if ($schema->fieldSpec($this, $name)) {
$fields[] = $name;
} elseif ($this->relObject($spec)) {
$fields[] = $spec;
}
}
}
}
// we need to make sure the format is unified before
// augmenting fields, so extensions can apply consistent checks
// but also after augmenting fields, because the extension
// might use the shorthand notation as well
// rewrite array, if it is using shorthand syntax
$rewrite = array();
foreach ($fields as $name => $specOrName) {
$identifer = (is_int($name)) ? $specOrName : $name;
if (is_int($name)) {
// Format: array('MyFieldName')
$rewrite[$identifer] = array();
} elseif (is_array($specOrName)) {
// Format: array('MyFieldName' => array(
// 'filter => 'ExactMatchFilter',
// 'field' => 'NumericField', // optional
// 'title' => 'My Title', // optional
// ))
$rewrite[$identifer] = array_merge(
array('filter' => $this->relObject($identifer)->config()->get('default_search_filter_class')),
(array)$specOrName
);
} else {
// Format: array('MyFieldName' => 'ExactMatchFilter')
$rewrite[$identifer] = array(
'filter' => $specOrName,
);
}
if (!isset($rewrite[$identifer]['title'])) {
$rewrite[$identifer]['title'] = (isset($labels[$identifer]))
? $labels[$identifer] : FormField::name_to_label($identifer);
}
if (!isset($rewrite[$identifer]['filter'])) {
/** @skipUpgrade */
$rewrite[$identifer]['filter'] = 'PartialMatchFilter';
}
}
$fields = $rewrite;
// apply DataExtensions if present
$this->extend('updateSearchableFields', $fields);
return $fields;
}
/**
* Get any user defined searchable fields labels that
* exist. Allows overriding of default field names in the form
* interface actually presented to the user.
*
* The reason for keeping this separate from searchable_fields,
* which would be a logical place for this functionality, is to
* avoid bloating and complicating the configuration array. Currently
* much of this system is based on sensible defaults, and this property
* would generally only be set in the case of more complex relationships
* between data object being required in the search interface.
*
* Generates labels based on name of the field itself, if no static property
* {@link self::field_labels} exists.
*
* @uses $field_labels
* @uses FormField::name_to_label()
*
* @param boolean $includerelations a boolean value to indicate if the labels returned include relation fields
*
* @return array|string Array of all element labels if no argument given, otherwise the label of the field
*/
public function fieldLabels($includerelations = true)
{
$cacheKey = static::class . '_' . $includerelations;
if (!isset(self::$_cache_field_labels[$cacheKey])) {
$customLabels = $this->config()->get('field_labels');
$autoLabels = array();
// get all translated static properties as defined in i18nCollectStatics()
$ancestry = ClassInfo::ancestry(static::class);
$ancestry = array_reverse($ancestry);
if ($ancestry) {
foreach ($ancestry as $ancestorClass) {
if ($ancestorClass === ViewableData::class) {
break;
}
$types = [
'db' => (array)Config::inst()->get($ancestorClass, 'db', Config::UNINHERITED)
];
if ($includerelations) {
$types['has_one'] = (array)Config::inst()->get($ancestorClass, 'has_one', Config::UNINHERITED);
$types['has_many'] = (array)Config::inst()->get($ancestorClass, 'has_many', Config::UNINHERITED);
$types['many_many'] = (array)Config::inst()->get($ancestorClass, 'many_many', Config::UNINHERITED);
$types['belongs_many_many'] = (array)Config::inst()->get($ancestorClass, 'belongs_many_many', Config::UNINHERITED);
}
foreach ($types as $type => $attrs) {
foreach ($attrs as $name => $spec) {
$autoLabels[$name] = _t("{$ancestorClass}.{$type}_{$name}", FormField::name_to_label($name));
}
}
}
}
$labels = array_merge((array)$autoLabels, (array)$customLabels);
$this->extend('updateFieldLabels', $labels);
self::$_cache_field_labels[$cacheKey] = $labels;
}
return self::$_cache_field_labels[$cacheKey];
}
/**
* Get a human-readable label for a single field,
* see {@link fieldLabels()} for more details.
*
* @uses fieldLabels()
* @uses FormField::name_to_label()
*
* @param string $name Name of the field
* @return string Label of the field
*/
public function fieldLabel($name)
{
$labels = $this->fieldLabels();
return (isset($labels[$name])) ? $labels[$name] : FormField::name_to_label($name);
}
/**
* Get the default summary fields for this object.
*
* @todo use the translation apparatus to return a default field selection for the language
*
* @return array
*/
public function summaryFields()
{
$rawFields = $this->config()->get('summary_fields');
// Merge associative / numeric keys
$fields = [];
foreach ($rawFields as $key => $value) {
if (is_int($key)) {
$key = $value;
}
$fields[$key] = $value;
}
if (!$fields) {
$fields = array();
// try to scaffold a couple of usual suspects
if ($this->hasField('Name')) {
$fields['Name'] = 'Name';
}
if (static::getSchema()->fieldSpec($this, 'Title')) {
$fields['Title'] = 'Title';
}
if ($this->hasField('Description')) {
$fields['Description'] = 'Description';
}
if ($this->hasField('FirstName')) {
$fields['FirstName'] = 'First Name';
}
}
$this->extend("updateSummaryFields", $fields);
// Final fail-over, just list ID field
if (!$fields) {
$fields['ID'] = 'ID';
}
// Localize fields (if possible)
foreach ($this->fieldLabels(false) as $name => $label) {
// only attempt to localize if the label definition is the same as the field name.
// this will preserve any custom labels set in the summary_fields configuration
if (isset($fields[$name]) && $name === $fields[$name]) {
$fields[$name] = $label;
}
}
return $fields;
}
/**
* Defines a default list of filters for the search context.
*
* If a filter class mapping is defined on the data object,
* it is constructed here. Otherwise, the default filter specified in
* {@link DBField} is used.
*
* @todo error handling/type checking for valid FormField and SearchFilter subclasses?
*
* @return array
*/
public function defaultSearchFilters()
{
$filters = array();
foreach ($this->searchableFields() as $name => $spec) {
if (empty($spec['filter'])) {
/** @skipUpgrade */
$filters[$name] = 'PartialMatchFilter';
} elseif ($spec['filter'] instanceof SearchFilter) {
$filters[$name] = $spec['filter'];
} else {
$filters[$name] = Injector::inst()->create($spec['filter'], $name);
}
}
return $filters;
}
/**
* @return boolean True if the object is in the database
*/
public function isInDB()
{
return is_numeric($this->ID) && $this->ID > 0;
}
/*
* @ignore
*/
private static $subclass_access = true;
/**
* Temporarily disable subclass access in data object qeur
*/
public static function disable_subclass_access()
{
self::$subclass_access = false;
}
public static function enable_subclass_access()
{
self::$subclass_access = true;
}
//-------------------------------------------------------------------------------------------//
/**
* Database field definitions.
* This is a map from field names to field type. The field
* type should be a class that extends .
* @var array
* @config
*/
private static $db = [];
/**
* Use a casting object for a field. This is a map from
* field name to class name of the casting object.
*
* @var array
*/
private static $casting = array(
"Title" => 'Text',
);
/**
* Specify custom options for a CREATE TABLE call.
* Can be used to specify a custom storage engine for specific database table.
* All options have to be keyed for a specific database implementation,
* identified by their class name (extending from {@link SS_Database}).
*
*
* array(
* 'MySQLDatabase' => 'ENGINE=MyISAM'
* )
*
*
* Caution: This API is experimental, and might not be
* included in the next major release. Please use with care.
*
* @var array
* @config
*/
private static $create_table_options = array(
MySQLSchemaManager::ID => 'ENGINE=InnoDB'
);
/**
* If a field is in this array, then create a database index
* on that field. This is a map from fieldname to index type.
* See {@link SS_Database->requireIndex()} and custom subclasses for details on the array notation.
*
* @var array
* @config
*/
private static $indexes = null;
/**
* Inserts standard column-values when a DataObject
* is instanciated. Does not insert default records {@see $default_records}.
* This is a map from fieldname to default value.
*
* - If you would like to change a default value in a sub-class, just specify it.
* - If you would like to disable the default value given by a parent class, set the default value to 0,'',
* or false in your subclass. Setting it to null won't work.
*
* @var array
* @config
*/
private static $defaults = [];
/**
* Multidimensional array which inserts default data into the database
* on a db/build-call as long as the database-table is empty. Please use this only
* for simple constructs, not for SiteTree-Objects etc. which need special
* behaviour such as publishing and ParentNodes.
*
* Example:
* array(
* array('Title' => "DefaultPage1", 'PageTitle' => 'page1'),
* array('Title' => "DefaultPage2")
* ).
*
* @var array
* @config
*/
private static $default_records = null;
/**
* One-to-zero relationship defintion. This is a map of component name to data type. In order to turn this into a
* true one-to-one relationship you can add a {@link DataObject::$belongs_to} relationship on the child class.
*
* Note that you cannot have a has_one and belongs_to relationship with the same name.
*
* @var array
* @config
*/
private static $has_one = [];
/**
* A meta-relationship that allows you to define the reverse side of a {@link DataObject::$has_one}.
*
* This does not actually create any data structures, but allows you to query the other object in a one-to-one
* relationship from the child object. If you have multiple belongs_to links to another object you can use the
* syntax "ClassName.HasOneName" to specify which foreign has_one key on the other object to use.
*
* Note that you cannot have a has_one and belongs_to relationship with the same name.
*
* @var array
* @config
*/
private static $belongs_to = [];
/**
* This defines a one-to-many relationship. It is a map of component name to the remote data class.
*
* This relationship type does not actually create a data structure itself - you need to define a matching $has_one
* relationship on the child class. Also, if the $has_one relationship on the child class has multiple links to this
* class you can use the syntax "ClassName.HasOneRelationshipName" in the remote data class definition to show
* which foreign key to use.
*
* @var array
* @config
*/
private static $has_many = [];
/**
* many-many relationship definitions.
* This is a map from component name to data type.
* @var array
* @config
*/
private static $many_many = [];
/**
* Extra fields to include on the connecting many-many table.
* This is a map from field name to field type.
*
* Example code:
*
* public static $many_many_extraFields = array(
* 'Members' => array(
* 'Role' => 'Varchar(100)'
* )
* );
*
*
* @var array
* @config
*/
private static $many_many_extraFields = [];
/**
* The inverse side of a many-many relationship.
* This is a map from component name to data type.
* @var array
* @config
*/
private static $belongs_many_many = [];
/**
* The default sort expression. This will be inserted in the ORDER BY
* clause of a SQL query if no other sort expression is provided.
* @var string
* @config
*/
private static $default_sort = null;
/**
* Default list of fields that can be scaffolded by the ModelAdmin
* search interface.
*
* Overriding the default filter, with a custom defined filter:
*
* static $searchable_fields = array(
* "Name" => "PartialMatchFilter"
* );
*
*
* Overriding the default form fields, with a custom defined field.
* The 'filter' parameter will be generated from {@link DBField::$default_search_filter_class}.
* The 'title' parameter will be generated from {@link DataObject->fieldLabels()}.
*
* static $searchable_fields = array(
* "Name" => array(
* "field" => "TextField"
* )
* );
*
*
* Overriding the default form field, filter and title:
*
* static $searchable_fields = array(
* "Organisation.ZipCode" => array(
* "field" => "TextField",
* "filter" => "PartialMatchFilter",
* "title" => 'Organisation ZIP'
* )
* );
*
* @config
*/
private static $searchable_fields = null;
/**
* User defined labels for searchable_fields, used to override
* default display in the search form.
* @config
*/
private static $field_labels = [];
/**
* Provides a default list of fields to be used by a 'summary'
* view of this object.
* @config
*/
private static $summary_fields = [];
public function provideI18nEntities()
{
// Note: see http://guides.rubyonrails.org/i18n.html#pluralization for rules
// Best guess for a/an rule. Better guesses require overriding in subclasses
$pluralName = $this->plural_name();
$singularName = $this->singular_name();
$conjunction = preg_match('/^[aeiou]/i', $singularName) ? 'An ' : 'A ';
return [
static::class . '.SINGULARNAME' => $this->singular_name(),
static::class . '.PLURALNAME' => $pluralName,
static::class . '.PLURALS' => [
'one' => $conjunction . $singularName,
'other' => '{count} ' . $pluralName
]
];
}
/**
* Returns true if the given method/parameter has a value
* (Uses the DBField::hasValue if the parameter is a database field)
*
* @param string $field The field name
* @param array $arguments
* @param bool $cache
* @return boolean
*/
public function hasValue($field, $arguments = null, $cache = true)
{
// has_one fields should not use dbObject to check if a value is given
$hasOne = static::getSchema()->hasOneComponent(static::class, $field);
if (!$hasOne && ($obj = $this->dbObject($field))) {
return $obj->exists();
} else {
return parent::hasValue($field, $arguments, $cache);
}
}
/**
* If selected through a many_many through relation, this is the instance of the joined record
*
* @return DataObject
*/
public function getJoin()
{
return $this->joinRecord;
}
/**
* Set joining object
*
* @param DataObject $object
* @param string $alias Alias
* @return $this
*/
public function setJoin(DataObject $object, $alias = null)
{
$this->joinRecord = $object;
if ($alias) {
if (static::getSchema()->fieldSpec(static::class, $alias)) {
throw new InvalidArgumentException(
"Joined record $alias cannot also be a db field"
);
}
$this->record[$alias] = $object;
}
return $this;
}
/**
* Find objects in the given relationships, merging them into the given list
*
* @param string $source Config property to extract relationships from
* @param bool $recursive True if recursive
* @param ArrayList $list If specified, items will be added to this list. If not, a new
* instance of ArrayList will be constructed and returned
* @return ArrayList The list of related objects
*/
public function findRelatedObjects($source, $recursive = true, $list = null)
{
if (!$list) {
$list = new ArrayList();
}
// Skip search for unsaved records
if (!$this->isInDB()) {
return $list;
}
$relationships = $this->config()->get($source) ?: [];
foreach ($relationships as $relationship) {
// Warn if invalid config
if (!$this->hasMethod($relationship)) {
trigger_error(sprintf(
"Invalid %s config value \"%s\" on object on class \"%s\"",
$source,
$relationship,
get_class($this)
), E_USER_WARNING);
continue;
}
// Inspect value of this relationship
$items = $this->{$relationship}();
// Merge any new item
$newItems = $this->mergeRelatedObjects($list, $items);
// Recurse if necessary
if ($recursive) {
foreach ($newItems as $item) {
/** @var DataObject $item */
$item->findRelatedObjects($source, true, $list);
}
}
}
return $list;
}
/**
* Helper method to merge owned/owning items into a list.
* Items already present in the list will be skipped.
*
* @param ArrayList $list Items to merge into
* @param mixed $items List of new items to merge
* @return ArrayList List of all newly added items that did not already exist in $list
*/
public function mergeRelatedObjects($list, $items)
{
$added = new ArrayList();
if (!$items) {
return $added;
}
if ($items instanceof DataObject) {
$items = [$items];
}
/** @var DataObject $item */
foreach ($items as $item) {
$this->mergeRelatedObject($list, $added, $item);
}
return $added;
}
/**
* Merge single object into a list, but ensures that existing objects are not
* re-added.
*
* @param ArrayList $list Global list
* @param ArrayList $added Additional list to insert into
* @param DataObject $item Item to add
*/
protected function mergeRelatedObject($list, $added, $item)
{
// Identify item
$itemKey = get_class($item) . '/' . $item->ID;
// Write if saved, versioned, and not already added
if ($item->isInDB() && !isset($list[$itemKey])) {
$list[$itemKey] = $item;
$added[$itemKey] = $item;
}
// Add joined record (from many_many through) automatically
$joined = $item->getJoin();
if ($joined) {
$this->mergeRelatedObject($list, $added, $joined);
}
}
}