mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-08-25 03:55:50 +02:00
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@77895 467b73ca-7a2a-4603-9d3b-597d59a354a9
182 lines
5.8 KiB
PHP
182 lines
5.8 KiB
PHP
<?php
|
|
/**
|
|
* Apply this interface to any {@link DBField} that doesn't have a 1-1 mapping with a database field.
|
|
* This includes multi-value fields and transformed fields
|
|
*
|
|
* @todo Unittests for loading and saving composite values (see GIS module for existing similiar unittests)
|
|
*
|
|
* Example with a combined street name and number:
|
|
* <code>
|
|
* class Street extends DBFields implements CompositeDBField() {
|
|
* protected $streetNumber;
|
|
* protected $streetName;
|
|
* protected $isChanged = false;
|
|
* static $composite_db = return array(
|
|
* "Number" => "Int",
|
|
* "Name" => "Text"
|
|
* );
|
|
*
|
|
* function requireField() {
|
|
* DB::requireField($this->tableName, "{$this->name}Number", 'Int');
|
|
* DB::requireField($this->tableName, "{$this->name}Name", 'Text');
|
|
* }
|
|
*
|
|
* function writeToManipulation(&$manipulation) {
|
|
* if($this->getStreetName()) {
|
|
* $manipulation['fields']["{$this->name}Name"] = $this->prepValueForDB($this->getStreetName());
|
|
* } else {
|
|
* $manipulation['fields']["{$this->name}Name"] = DBField::create('Varchar', $this->getStreetName())->nullValue();
|
|
* }
|
|
*
|
|
* if($this->getStreetNumber()) {
|
|
* $manipulation['fields']["{$this->name}Number"] = $this->prepValueForDB($this->getStreetNumber());
|
|
* } else {
|
|
* $manipulation['fields']["{$this->name}Number"] = DBField::create('Int', $this->getStreetNumber())->nullValue();
|
|
* }
|
|
* }
|
|
*
|
|
* function addToQuery(&$query) {
|
|
* parent::addToQuery($query);
|
|
* $query->select[] = "{$this->name}Number";
|
|
* $query->select[] = "{$this->name}Name";
|
|
* }
|
|
*
|
|
* function setValue($value, $record = null, $markChanged=true) {
|
|
* if ($value instanceof Street && $value->hasValue()) {
|
|
* $this->setStreetName($value->getStreetName(), $markChanged);
|
|
* $this->setStreetNumber($value->getStreetNumber(), $markChanged);
|
|
* if($markChanged) $this->isChanged = true;
|
|
* } else if($record && isset($record[$this->name . 'Name']) && isset($record[$this->name . 'Number'])) {
|
|
* if($record[$this->name . 'Name'] && $record[$this->name . 'Number']) {
|
|
* $this->setStreetName($record[$this->name . 'Name'], $markChanged);
|
|
* $this->setStreetNumber($record[$this->name . 'Number'], $markChanged);
|
|
* }
|
|
* if($markChanged) $this->isChanged = true;
|
|
* } else if (is_array($value)) {
|
|
* if (array_key_exists('Name', $value)) {
|
|
* $this->setStreetName($value['Name'], $markChanged);
|
|
* }
|
|
* if (array_key_exists('Number', $value)) {
|
|
* $this->setStreetNumber($value['Number'], $markChanged);
|
|
* }
|
|
* if($markChanged) $this->isChanged = true;
|
|
* }
|
|
* }
|
|
*
|
|
* function setStreetNumber($val, $markChanged=true) {
|
|
* $this->streetNumber = $val;
|
|
* if($markChanged) $this->isChanged = true;
|
|
* }
|
|
*
|
|
* function setStreetName($val, $markChanged=true) {
|
|
* $this->streetName = $val;
|
|
* if($markChanged) $this->isChanged = true;
|
|
* }
|
|
*
|
|
* function getStreetNumber() {
|
|
* return $this->streetNumber;
|
|
* }
|
|
*
|
|
* function getStreetName() {
|
|
* return $this->streetName;
|
|
* }
|
|
*
|
|
* function isChanged() {
|
|
* return $this->isChanged;
|
|
* }
|
|
*
|
|
* function hasValue() {
|
|
* return ($this->getStreetName() || $this->getStreetNumber());
|
|
* }
|
|
* }
|
|
* </code>
|
|
*
|
|
* @package sapphire
|
|
* @subpackage model
|
|
*/
|
|
interface CompositeDBField {
|
|
|
|
/**
|
|
* Similiar to {@link DataObject::$db},
|
|
* holds an array of composite field names.
|
|
* Don't include the fields "main name",
|
|
* it will be prefixed in {@link requireField()}.
|
|
*
|
|
* @var array $composite_db
|
|
*/
|
|
//static $composite_db;
|
|
|
|
/**
|
|
* Set the value of this field in various formats.
|
|
* Used by {@link DataObject->getField()}, {@link DataObject->setCastedField()}
|
|
* {@link DataObject->dbObject()} and {@link DataObject->write()}.
|
|
*
|
|
* As this method is used both for initializing the field after construction,
|
|
* and actually changing its values, it needs a {@link $markChanged}
|
|
* parameter.
|
|
*
|
|
* @param DBField|array $value
|
|
* @param array $record Map of values loaded from the database
|
|
* @param boolean $markChanged Indicate wether this field should be marked changed.
|
|
* Set to FALSE if you are initializing this field after construction, rather
|
|
* than setting a new value.
|
|
*/
|
|
function setValue($value, $record = null, $markChanged = true);
|
|
|
|
/**
|
|
* Used in constructing the database schema.
|
|
* Add any custom properties defined in {@link $composite_db}.
|
|
* Should make one or more calls to {@link DB::requireField()}.
|
|
*/
|
|
//abstract function requireField();
|
|
|
|
/**
|
|
* Add the custom internal values to an INSERT or UPDATE
|
|
* request passed through the ORM with {@link DataObject->write()}.
|
|
* Fields are added in $manipulation['fields']. Please ensure
|
|
* these fields are escaped for database insertion, as no
|
|
* further processing happens before running the query.
|
|
* Use {@link DBField->prepValueForDB()}.
|
|
* Ensure to write NULL or empty values as well to allow
|
|
* unsetting a previously set field. Use {@link DBField->nullValue()}
|
|
* for the appropriate type.
|
|
*
|
|
* @param array $manipulation
|
|
*/
|
|
function writeToManipulation(&$manipulation);
|
|
|
|
/**
|
|
* Add all columns which are defined through {@link requireField()}
|
|
* and {@link $composite_db}, or any additional SQL that is required
|
|
* to get to these columns. Will mostly just write to the {@link SQLQuery->select}
|
|
* array.
|
|
*
|
|
* @param SQLQuery $query
|
|
*/
|
|
function addToQuery(&$query);
|
|
|
|
/**
|
|
* Return array in the format of {@link $composite_db}.
|
|
* Used by {@link DataObject->hasOwnDatabaseField()}.
|
|
* @return array
|
|
*/
|
|
function compositeDatabaseFields();
|
|
|
|
/**
|
|
* Determines if the field has been changed since its initialization.
|
|
* Most likely relies on an internal flag thats changed when calling
|
|
* {@link setValue()} or any other custom setters on the object.
|
|
*
|
|
* @return boolean
|
|
*/
|
|
function isChanged();
|
|
|
|
/**
|
|
* Determines if any of the properties in this field have a value,
|
|
* meaning at least one of them is not NULL.
|
|
*
|
|
* @return boolean
|
|
*/
|
|
function hasValue();
|
|
|
|
} |