<?php

class SortableObject extends DataObject {
	private static $db = array(
		'ObjectTitle' => 'VarChar'
		,'ObjectDescription' => 'Text'
		,'RelatedCategories' => 'MultiValueField'
		,'SortOrder' => 'Int'
	);
	
	public static $default_sort = 'SortOrder';
	
	private static $has_one = array(
		'ObjectImage' => 'Image',
		'SortableObjectSection' => 'SortableObjectSection'
	);
	
	private static $summary_fields = array(
		'ObjectTitle'
	);
	
	public function getCMSFields() {
		$fields = parent::getCMSFields();
		
		$fields->fieldByName('Root.Main.ObjectImage')
			->getValidator()->setAllowedExtensions(array('jpg', 'png'));
		
		$fields->removeFieldFromTab('Root.Main','SortOrder');
		$parentCategories = $this->SortableObjectSection()->Categories->Value;
		$categoriesField = new MultiValueCheckboxField('RelatedCategories', 'Related Categories', $parentCategories);
		$fields->addFieldToTab('Root.Main', $categoriesField);
		
		return $fields;
	}
}