Файл: framework/model/fieldtypes/ForeignKey.php
Строк: 75
<?php
/**
* A special type Int field used for foreign keys in has_one relationships.
* @uses ImageField
* @uses SimpleImageField
* @uses FileIFrameField
* @uses DropdownField
*
* @param string $name
* @param DataObject $object The object that the foreign key is stored on (should have a relation with $name)
*
* @package framework
* @subpackage model
*/
class ForeignKey extends Int {
/**
* @var DataObject
*/
protected $object;
private static $default_search_filter_class = 'ExactMatchFilter';
public function __construct($name, $object = null) {
$this->object = $object;
parent::__construct($name);
}
public function scaffoldFormField($title = null, $params = null) {
$relationName = substr($this->name,0,-2);
$hasOneClass = $this->object->hasOneComponent($relationName);
if($hasOneClass && singleton($hasOneClass) instanceof Image) {
$field = new UploadField($relationName, $title);
$field->getValidator()->setAllowedExtensions(array('jpg', 'jpeg', 'png', 'gif'));
} elseif($hasOneClass && singleton($hasOneClass) instanceof File) {
$field = new UploadField($relationName, $title);
} else {
$titleField = (singleton($hasOneClass)->hasField('Title')) ? "Title" : "Name";
$list = DataList::create($hasOneClass);
// Don't scaffold a dropdown for large tables, as making the list concrete
// might exceed the available PHP memory in creating too many DataObject instances
if($list->count() < 100) {
$field = new DropdownField($this->name, $title, $list->map('ID', $titleField));
$field->setEmptyString(' ');
} else {
$field = new NumericField($this->name, $title);
}
}
return $field;
}
}