56 lines
1.6 KiB
PHP
56 lines
1.6 KiB
PHP
<?php
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/**
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* A special type Int field used for foreign keys in has_one relationships.
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* @uses ImageField
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* @uses SimpleImageField
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* @uses FileIFrameField
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* @uses DropdownField
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*
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* @param string $name
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* @param DataOject $object The object that the foreign key is stored on (should have a relation with $name)
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*
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* @package framework
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* @subpackage model
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*/
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class ForeignKey extends Int {
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/**
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* @var DataObject
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*/
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protected $object;
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public static $default_search_filter_class = 'ExactMatchMultiFilter';
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function __construct($name, $object = null) {
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$this->object = $object;
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parent::__construct($name);
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}
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public function scaffoldFormField($title = null, $params = null) {
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$relationName = substr($this->name,0,-2);
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$hasOneClass = $this->object->has_one($relationName);
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if($hasOneClass && singleton($hasOneClass) instanceof Image) {
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$field = new UploadField($relationName, $title);
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$field->getValidator()->setAllowedExtensions(array('jpg', 'jpeg', 'png', 'gif'));
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} elseif($hasOneClass && singleton($hasOneClass) instanceof File) {
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$field = new UploadField($relationName, $title);
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} else {
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$titleField = (singleton($hasOneClass)->hasField('Title')) ? "Title" : "Name";
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$list = DataList::create($hasOneClass);
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// Don't scaffold a dropdown for large tables, as making the list concrete
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// might exceed the available PHP memory in creating too many DataObject instances
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if($list->count() < 100) {
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$field = new DropdownField($this->name, $title, $list->map("ID", $titleField), null, null, ' ');
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} else {
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$field = new NumericField($this->name, $title);
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}
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}
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return $field;
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}
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}
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