sortablegridfield/docs/HasManyExample.md

has_many Example
=================
    :::php
	/*** TestPage.php ***/
	class TestPage extends Page {
		public static $has_many=array(
			'TestObjects'=>'TestObject'
		);
		
		public function getCMSFields() {
			$fields=parent::getCMSFields();
			
			$conf=GridFieldConfig_RelationEditor::create(10);
			$conf->addComponent(new GridFieldSortableRows('SortOrder'));
			
			$fields->addFieldToTab('Root.TestObjects', new GridField('TestObjects', 'TestObjects', $this->TestObjects(), $conf));
			
			return $fields;
		}
	}


	/*** TestObject.php ***/
	class TestObject extends DataObject {
		public static $db=array(
			'Title'=>'Text'
		);
		
		public static $belongs_many_many=array(
			'TestPages'=>'TestPage'
		);
		
		public static $default_sort='SortOrder';
	}