mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
1db08bac88
BUG Fix TreeMultiSelectField using the wrong label BUG Fix encoding of selected title on TreeDropdownField BUG Fix DataDifferencer trying to compare non-comparable fields (non-dbfield objects) BUG: Fix issue with TreeMultiSelectField not saving BUG: Fix issue with GridFieldPrintButton ENHANCEMENT Instead of using multiple api calls to encode dbfield values, delegate this operation to the individual fields via forTemplate Instead of using a new API to communicate html encoding to treeselect, just ensure all content is HTML encoded, and enable html_titles in jstree.
722 lines
22 KiB
PHP
722 lines
22 KiB
PHP
<?php
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/**
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* A ViewableData object is any object that can be rendered into a template/view.
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*
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* A view interrogates the object being currently rendered in order to get data to render into the template. This data
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* is provided and automatically escaped by ViewableData. Any class that needs to be available to a view (controllers,
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* {@link DataObject}s, page controls) should inherit from this class.
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*
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* @package framework
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* @subpackage view
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*/
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class ViewableData extends Object implements IteratorAggregate {
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/**
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* An array of objects to cast certain fields to. This is set up as an array in the format:
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*
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* <code>
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* public static $casting = array (
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* 'FieldName' => 'ClassToCastTo(Arguments)'
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* );
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* </code>
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*
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* @var array
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* @config
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*/
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private static $casting = array(
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'CSSClasses' => 'Varchar'
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);
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/**
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* The default object to cast scalar fields to if casting information is not specified, and casting to an object
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* is required.
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*
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* @var string
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* @config
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*/
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private static $default_cast = 'Text';
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/**
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* @var array
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*/
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private static $casting_cache = array();
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// -----------------------------------------------------------------------------------------------------------------
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/**
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* A failover object to attempt to get data from if it is not present on this object.
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*
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* @var ViewableData
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*/
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protected $failover;
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/**
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* @var ViewableData
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*/
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protected $customisedObject;
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/**
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* @var array
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*/
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private $objCache = array();
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// -----------------------------------------------------------------------------------------------------------------
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/**
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* Converts a field spec into an object creator. For example: "Int" becomes "new Int($fieldName);" and "Varchar(50)"
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* becomes "new Varchar($fieldName, 50);".
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*
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* @param string $fieldSchema The field spec
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* @return string
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*/
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public static function castingObjectCreator($fieldSchema) {
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Deprecation::notice('2.5', 'Use Object::create_from_string() instead');
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}
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/**
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* Convert a field schema (e.g. "Varchar(50)") into a casting object creator array that contains both a className
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* and castingHelper constructor code. See {@link castingObjectCreator} for more information about the constructor.
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*
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* @param string $fieldSchema
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* @return array
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*/
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public static function castingObjectCreatorPair($fieldSchema) {
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Deprecation::notice('2.5', 'Use Object::create_from_string() instead');
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}
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// FIELD GETTERS & SETTERS -----------------------------------------------------------------------------------------
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/**
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* Check if a field exists on this object or its failover.
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*
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* @param string $property
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* @return bool
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*/
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public function __isset($property) {
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return $this->hasField($property) || ($this->failover && $this->failover->hasField($property));
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}
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/**
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* Get the value of a property/field on this object. This will check if a method called get{$property} exists, then
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* check if a field is available using {@link ViewableData::getField()}, then fall back on a failover object.
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*
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* @param string $property
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* @return mixed
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*/
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public function __get($property) {
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if($this->hasMethod($method = "get$property")) {
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return $this->$method();
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} elseif($this->hasField($property)) {
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return $this->getField($property);
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} elseif($this->failover) {
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return $this->failover->$property;
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}
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}
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/**
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* Set a property/field on this object. This will check for the existence of a method called set{$property}, then
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* use the {@link ViewableData::setField()} method.
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*
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* @param string $property
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* @param mixed $value
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*/
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public function __set($property, $value) {
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if($this->hasMethod($method = "set$property")) {
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$this->$method($value);
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} else {
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$this->setField($property, $value);
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}
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}
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/**
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* Check if a field exists on this object. This should be overloaded in child classes.
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*
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* @param string $field
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* @return bool
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*/
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public function hasField($field) {
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return property_exists($this, $field);
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}
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/**
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* Get the value of a field on this object. This should be overloaded in child classes.
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*
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* @param string $field
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* @return mixed
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*/
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public function getField($field) {
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return $this->$field;
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}
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/**
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* Set a field on this object. This should be overloaded in child classes.
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*
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* @param string $field
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* @param mixed $value
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*/
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public function setField($field, $value) {
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$this->$field = $value;
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}
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// -----------------------------------------------------------------------------------------------------------------
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/**
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* Add methods from the {@link ViewableData::$failover} object, as well as wrapping any methods prefixed with an
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* underscore into a {@link ViewableData::cachedCall()}.
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*/
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public function defineMethods() {
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if($this->failover) {
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if(is_object($this->failover)) $this->addMethodsFrom('failover');
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else user_error("ViewableData::\$failover set to a non-object", E_USER_WARNING);
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if(isset($_REQUEST['debugfailover'])) {
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Debug::message("$this->class created with a failover class of {$this->failover->class}");
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}
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}
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foreach($this->allMethodNames() as $method) {
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if($method[0] == '_' && $method[1] != '_') {
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$this->createMethod(
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substr($method, 1), "return \$obj->cachedCall('$method', \$args, '" . substr($method, 1) . "');"
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);
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}
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}
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parent::defineMethods();
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}
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/**
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* Merge some arbitrary data in with this object. This method returns a {@link ViewableData_Customised} instance
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* with references to both this and the new custom data.
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*
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* Note that any fields you specify will take precedence over the fields on this object.
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*
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* @param array|ViewableData $data
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* @return ViewableData_Customised
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*/
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public function customise($data) {
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if(is_array($data) && (empty($data) || ArrayLib::is_associative($data))) {
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$data = new ArrayData($data);
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}
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if($data instanceof ViewableData) {
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return new ViewableData_Customised($this, $data);
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}
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throw new InvalidArgumentException (
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'ViewableData->customise(): $data must be an associative array or a ViewableData instance'
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);
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}
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/**
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* @param ViewableData $object
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*/
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public function setCustomisedObj(ViewableData $object) {
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$this->customisedObject = $object;
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}
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// CASTING ---------------------------------------------------------------------------------------------------------
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/**
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* Get the class a field on this object would be casted to, as well as the casting helper for casting a field to
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* an object (see {@link ViewableData::castingHelper()} for information on casting helpers).
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*
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* The returned array contains two keys:
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* - className: the class the field would be casted to (e.g. "Varchar")
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* - castingHelper: the casting helper for casting the field (e.g. "return new Varchar($fieldName)")
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*
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* @param string $field
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* @return array
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*/
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public function castingHelperPair($field) {
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Deprecation::notice('2.5', 'use castingHelper() instead');
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return $this->castingHelper($field);
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}
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/**
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* Return the "casting helper" (a piece of PHP code that when evaluated creates a casted value object) for a field
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* on this object.
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*
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* @param string $field
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* @return string
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*/
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public function castingHelper($field) {
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if($this->hasMethod('db') && $fieldSpec = $this->db($field)) {
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return $fieldSpec;
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}
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$specs = Config::inst()->get(get_class($this), 'casting');
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if(isset($specs[$field])) return $specs[$field];
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if($this->failover) return $this->failover->castingHelper($field);
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}
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/**
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* Get the class name a field on this object will be casted to
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*
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* @param string $field
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* @return string
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*/
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public function castingClass($field) {
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$spec = $this->castingHelper($field);
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if(!$spec) return null;
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$bPos = strpos($spec,'(');
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if($bPos === false) return $spec;
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else return substr($spec, 0, $bPos);
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}
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/**
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* Return the string-format type for the given field.
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*
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* @param string $field
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* @return string 'xml'|'raw'
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*/
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public function escapeTypeForField($field) {
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$class = $this->castingClass($field) ?: $this->config()->default_cast;
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return Config::inst()->get($class, 'escape_type', Config::FIRST_SET);
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}
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/**
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* Save the casting cache for this object (including data from any failovers) into a variable
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*
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* @param reference $cache
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*/
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public function buildCastingCache(&$cache) {
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$ancestry = array_reverse(ClassInfo::ancestry($this->class));
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$merge = true;
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foreach($ancestry as $class) {
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if(!isset(self::$casting_cache[$class]) && $merge) {
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$mergeFields = is_subclass_of($class, 'DataObject') ? array('db', 'casting') : array('casting');
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if($mergeFields) foreach($mergeFields as $field) {
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$casting = Config::inst()->get($class, $field, Config::UNINHERITED);
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if($casting) foreach($casting as $field => $cast) {
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if(!isset($cache[$field])) $cache[$field] = self::castingObjectCreatorPair($cast);
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}
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}
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if($class == 'ViewableData') $merge = false;
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} elseif($merge) {
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$cache = ($cache) ? array_merge(self::$casting_cache[$class], $cache) : self::$casting_cache[$class];
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}
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if($class == 'ViewableData') break;
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}
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}
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// TEMPLATE ACCESS LAYER -------------------------------------------------------------------------------------------
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/**
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* Render this object into the template, and get the result as a string. You can pass one of the following as the
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* $template parameter:
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* - a template name (e.g. Page)
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* - an array of possible template names - the first valid one will be used
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* - an SSViewer instance
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*
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* @param string|array|SSViewer $template the template to render into
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* @param array $customFields fields to customise() the object with before rendering
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* @return HTMLText
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*/
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public function renderWith($template, $customFields = null) {
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if(!is_object($template)) {
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$template = new SSViewer($template);
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}
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$data = ($this->customisedObject) ? $this->customisedObject : $this;
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if($customFields instanceof ViewableData) {
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$data = $data->customise($customFields);
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}
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if($template instanceof SSViewer) {
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return $template->process($data, is_array($customFields) ? $customFields : null);
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}
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throw new UnexpectedValueException (
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"ViewableData::renderWith(): unexpected $template->class object, expected an SSViewer instance"
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);
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}
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/**
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* Get the value of a field on this object, automatically inserting the value into any available casting objects
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* that have been specified.
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*
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* @param string $fieldName
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* @param array $arguments
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* @param bool $forceReturnedObject if TRUE, the value will ALWAYS be casted to an object before being returned,
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* even if there is no explicit casting information
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* @param string $cacheName a custom cache name
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*/
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public function obj($fieldName, $arguments = null, $forceReturnedObject = true, $cache = false, $cacheName = null) {
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if(!$cacheName) $cacheName = $arguments ? $fieldName . implode(',', $arguments) : $fieldName;
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if(!isset($this->objCache[$cacheName])) {
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// HACK: Don't call the deprecated FormField::Name() method
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$methodIsAllowed = true;
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if($this instanceof FormField && $fieldName == 'Name') $methodIsAllowed = false;
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if($methodIsAllowed && $this->hasMethod($fieldName)) {
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$value = $arguments ? call_user_func_array(array($this, $fieldName), $arguments) : $this->$fieldName();
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} else {
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$value = $this->$fieldName;
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}
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if(!is_object($value) && ($this->castingClass($fieldName) || $forceReturnedObject)) {
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if(!$castConstructor = $this->castingHelper($fieldName)) {
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$castConstructor = $this->config()->default_cast;
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}
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$valueObject = Object::create_from_string($castConstructor, $fieldName);
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$valueObject->setValue($value, $this);
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$value = $valueObject;
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}
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if($cache) $this->objCache[$cacheName] = $value;
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} else {
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$value = $this->objCache[$cacheName];
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}
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if(!is_object($value) && $forceReturnedObject) {
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$default = $this->config()->default_cast;
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$castedValue = new $default($fieldName);
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$castedValue->setValue($value);
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$value = $castedValue;
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}
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return $value;
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}
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/**
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* A simple wrapper around {@link ViewableData::obj()} that automatically caches the result so it can be used again
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* without re-running the method.
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*
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* @param string $field
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* @param array $arguments
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* @param string $identifier an optional custom cache identifier
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*/
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public function cachedCall($field, $arguments = null, $identifier = null) {
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return $this->obj($field, $arguments, false, true, $identifier);
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}
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/**
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* Checks if a given method/field has a valid value. If the result is an object, this will return the result of the
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* exists method, otherwise will check if the result is not just an empty paragraph tag.
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*
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* @param string $field
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* @param array $arguments
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* @param bool $cache
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* @return bool
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*/
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public function hasValue($field, $arguments = null, $cache = true) {
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$result = $cache ? $this->cachedCall($field, $arguments) : $this->obj($field, $arguments, false, false);
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if(is_object($result) && $result instanceof Object) {
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return $result->exists();
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} else {
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// Empty paragraph checks are a workaround for TinyMCE
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return ($result && $result !== '<p></p>');
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}
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}
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/**#@+
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* @param string $field
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* @param array $arguments
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* @param bool $cache
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* @return string
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*/
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/**
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* Get the string value of a field on this object that has been suitable escaped to be inserted directly into a
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* template.
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*/
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public function XML_val($field, $arguments = null, $cache = false) {
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$result = $this->obj($field, $arguments, false, $cache);
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return (is_object($result) && $result instanceof Object) ? $result->forTemplate() : $result;
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}
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/**
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* Return the value of the field without any escaping being applied.
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*/
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public function RAW_val($field, $arguments = null, $cache = true) {
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return Convert::xml2raw($this->XML_val($field, $arguments, $cache));
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}
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/**
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* Return the value of a field in an SQL-safe format.
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*/
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public function SQL_val($field, $arguments = null, $cache = true) {
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return Convert::raw2sql($this->RAW_val($field, $arguments, $cache));
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}
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/**
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* Return the value of a field in a JavaScript-save format.
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*/
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public function JS_val($field, $arguments = null, $cache = true) {
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return Convert::raw2js($this->RAW_val($field, $arguments, $cache));
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}
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/**
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* Return the value of a field escaped suitable to be inserted into an XML node attribute.
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*/
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public function ATT_val($field, $arguments = null, $cache = true) {
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return Convert::raw2att($this->RAW_val($field, $arguments, $cache));
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}
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/**#@-*/
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/**
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* Get an array of XML-escaped values by field name
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*
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* @param array $elements an array of field names
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* @return array
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*/
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public function getXMLValues($fields) {
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$result = array();
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foreach($fields as $field) {
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$result[$field] = $this->XML_val($field);
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}
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return $result;
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}
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// ITERATOR SUPPORT ------------------------------------------------------------------------------------------------
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/**
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* Return a single-item iterator so you can iterate over the fields of a single record.
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*
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* This is useful so you can use a single record inside a <% control %> block in a template - and then use
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* to access individual fields on this object.
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*
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* @return ArrayIterator
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*/
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public function getIterator() {
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return new ArrayIterator(array($this));
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}
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// UTILITY METHODS -------------------------------------------------------------------------------------------------
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/**
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* When rendering some objects it is necessary to iterate over the object being rendered, to do this, you need
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* access to itself.
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*
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* @return ViewableData
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*/
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public function Me() {
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return $this;
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}
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/**
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* Return the directory if the current active theme (relative to the site root).
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*
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* This method is useful for things such as accessing theme images from your template without hardcoding the theme
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* page - e.g. <img src="$ThemeDir/images/something.gif">.
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*
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* This method should only be used when a theme is currently active. However, it will fall over to the current
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* project directory.
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*
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* @param string $subtheme the subtheme path to get
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* @return string
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*/
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public function ThemeDir($subtheme = false) {
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if(
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Config::inst()->get('SSViewer', 'theme_enabled')
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&& $theme = Config::inst()->get('SSViewer', 'theme')
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) {
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return THEMES_DIR . "/$theme" . ($subtheme ? "_$subtheme" : null);
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|
}
|
|
|
|
return project();
|
|
}
|
|
|
|
/**
|
|
* Get part of the current classes ancestry to be used as a CSS class.
|
|
*
|
|
* This method returns an escaped string of CSS classes representing the current classes ancestry until it hits a
|
|
* stop point - e.g. "Page DataObject ViewableData".
|
|
*
|
|
* @param string $stopAtClass the class to stop at (default: ViewableData)
|
|
* @return string
|
|
* @uses ClassInfo
|
|
*/
|
|
public function CSSClasses($stopAtClass = 'ViewableData') {
|
|
$classes = array();
|
|
$classAncestry = array_reverse(ClassInfo::ancestry($this->class));
|
|
$stopClasses = ClassInfo::ancestry($stopAtClass);
|
|
|
|
foreach($classAncestry as $class) {
|
|
if(in_array($class, $stopClasses)) break;
|
|
$classes[] = $class;
|
|
}
|
|
|
|
// optionally add template identifier
|
|
if(isset($this->template) && !in_array($this->template, $classes)) {
|
|
$classes[] = $this->template;
|
|
}
|
|
|
|
return Convert::raw2att(implode(' ', $classes));
|
|
}
|
|
|
|
/**
|
|
* Return debug information about this object that can be rendered into a template
|
|
*
|
|
* @return ViewableData_Debugger
|
|
*/
|
|
public function Debug() {
|
|
return new ViewableData_Debugger($this);
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* @package framework
|
|
* @subpackage view
|
|
*/
|
|
class ViewableData_Customised extends ViewableData {
|
|
|
|
/**
|
|
* @var ViewableData
|
|
*/
|
|
protected $original, $customised;
|
|
|
|
/**
|
|
* Instantiate a new customised ViewableData object
|
|
*
|
|
* @param ViewableData $originalObject
|
|
* @param ViewableData $customisedObject
|
|
*/
|
|
public function __construct(ViewableData $originalObject, ViewableData $customisedObject) {
|
|
$this->original = $originalObject;
|
|
$this->customised = $customisedObject;
|
|
|
|
$this->original->setCustomisedObj($this);
|
|
|
|
parent::__construct();
|
|
}
|
|
|
|
public function __call($method, $arguments) {
|
|
if($this->customised->hasMethod($method)) {
|
|
return call_user_func_array(array($this->customised, $method), $arguments);
|
|
}
|
|
|
|
return call_user_func_array(array($this->original, $method), $arguments);
|
|
}
|
|
|
|
public function __get($property) {
|
|
if(isset($this->customised->$property)) {
|
|
return $this->customised->$property;
|
|
}
|
|
|
|
return $this->original->$property;
|
|
}
|
|
|
|
public function __set($property, $value) {
|
|
$this->customised->$property = $this->original->$property = $value;
|
|
}
|
|
|
|
public function hasMethod($method) {
|
|
return $this->customised->hasMethod($method) || $this->original->hasMethod($method);
|
|
}
|
|
|
|
public function cachedCall($field, $arguments = null, $identifier = null) {
|
|
if($this->customised->hasMethod($field) || $this->customised->hasField($field)) {
|
|
$result = $this->customised->cachedCall($field, $arguments, $identifier);
|
|
} else {
|
|
$result = $this->original->cachedCall($field, $arguments, $identifier);
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
public function obj($fieldName, $arguments = null, $forceReturnedObject = true, $cache = false, $cacheName = null) {
|
|
if($this->customised->hasField($fieldName) || $this->customised->hasMethod($fieldName)) {
|
|
return $this->customised->obj($fieldName, $arguments, $forceReturnedObject, $cache, $cacheName);
|
|
}
|
|
|
|
return $this->original->obj($fieldName, $arguments, $forceReturnedObject, $cache, $cacheName);
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Allows you to render debug information about a {@link ViewableData} object into a template.
|
|
*
|
|
* @package framework
|
|
* @subpackage view
|
|
*/
|
|
class ViewableData_Debugger extends ViewableData {
|
|
|
|
/**
|
|
* @var ViewableData
|
|
*/
|
|
protected $object;
|
|
|
|
/**
|
|
* @param ViewableData $object
|
|
*/
|
|
public function __construct(ViewableData $object) {
|
|
$this->object = $object;
|
|
parent::__construct();
|
|
}
|
|
|
|
/**
|
|
* Return debugging information, as XHTML. If a field name is passed, it will show debugging information on that
|
|
* field, otherwise it will show information on all methods and fields.
|
|
*
|
|
* @param string $field the field name
|
|
* @return string
|
|
*/
|
|
public function forTemplate($field = null) {
|
|
// debugging info for a specific field
|
|
if($field) return "<b>Debugging Information for {$this->class}->{$field}</b><br/>" .
|
|
($this->object->hasMethod($field)? "Has method '$field'<br/>" : null) .
|
|
($this->object->hasField($field) ? "Has field '$field'<br/>" : null) ;
|
|
|
|
// debugging information for the entire class
|
|
$reflector = new ReflectionObject($this->object);
|
|
$debug = "<b>Debugging Information: all methods available in '{$this->object->class}'</b><br/><ul>";
|
|
|
|
foreach($this->object->allMethodNames() as $method) {
|
|
// check that the method is public
|
|
if($method[0] === strtoupper($method[0]) && $method[0] != '_') {
|
|
if($reflector->hasMethod($method) && $method = $reflector->getMethod($method)) {
|
|
if($method->isPublic()) {
|
|
$debug .= "<li>\${$method->getName()}";
|
|
|
|
if(count($method->getParameters())) {
|
|
$debug .= ' <small>(' . implode(', ', $method->getParameters()) . ')</small>';
|
|
}
|
|
|
|
$debug .= '</li>';
|
|
}
|
|
} else {
|
|
$debug .= "<li>\$$method</li>";
|
|
}
|
|
}
|
|
}
|
|
|
|
$debug .= '</ul>';
|
|
|
|
if($this->object->hasMethod('toMap')) {
|
|
$debug .= "<b>Debugging Information: all fields available in '{$this->object->class}'</b><br/><ul>";
|
|
|
|
foreach($this->object->toMap() as $field => $value) {
|
|
$debug .= "<li>\$$field</li>";
|
|
}
|
|
|
|
$debug .= "</ul>";
|
|
}
|
|
|
|
// check for an extra attached data
|
|
if($this->object->hasMethod('data') && $this->object->data() != $this->object) {
|
|
$debug .= ViewableData_Debugger::create($this->object->data())->forTemplate();
|
|
}
|
|
|
|
return $debug;
|
|
}
|
|
|
|
}
|