92 lines
2.3 KiB
PHP
92 lines
2.3 KiB
PHP
<?php
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namespace SilverStripe\ORM\FieldType;
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use SilverStripe\ORM\DataObject;
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/**
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* A special ForeignKey class that handles relations with arbitrary class types
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*/
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class DBPolymorphicForeignKey extends DBComposite
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{
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private static $index = true;
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private static $composite_db = [
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'ID' => 'Int',
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'Class' => "DBClassName('" . DataObject::class . "', ['index' => false])"
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];
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public function scaffoldFormField($title = null, $params = null)
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{
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// Opt-out of form field generation - Scaffolding should be performed on
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// the has_many end, or set programmatically.
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// @todo - Investigate suitable FormField
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return null;
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}
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/**
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* Get the value of the "Class" this key points to
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*
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* @return string Name of a subclass of DataObject
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*/
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public function getClassValue()
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{
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return $this->getField('Class');
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}
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/**
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* Set the value of the "Class" this key points to
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*
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* @param string $value Name of a subclass of DataObject
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* @param boolean $markChanged Mark this field as changed?
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*/
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public function setClassValue($value, $markChanged = true)
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{
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$this->setField('Class', $value, $markChanged);
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}
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/**
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* Gets the value of the "ID" this key points to
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*
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* @return integer
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*/
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public function getIDValue()
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{
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return $this->getField('ID');
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}
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/**
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* Sets the value of the "ID" this key points to
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*
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* @param integer $value
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* @param boolean $markChanged Mark this field as changed?
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*/
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public function setIDValue($value, $markChanged = true)
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{
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$this->setField('ID', $value, $markChanged);
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}
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public function setValue($value, $record = null, $markChanged = true)
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{
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// Map dataobject value to array
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if ($value instanceof DataObject) {
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$value = [
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'ID' => $value->ID,
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'Class' => get_class($value),
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];
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}
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parent::setValue($value, $record, $markChanged);
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}
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public function getValue()
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{
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$id = $this->getIDValue();
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$class = $this->getClassValue();
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if ($id && $class && is_subclass_of($class, DataObject::class)) {
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return DataObject::get_by_id($class, $id);
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}
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return null;
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}
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}
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