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Data Model Questions /

Moderators: martimiz, Sean, Ed, biapar, Willr, Ingo, swaiba

ModelAdmin - add an existing DataObject in a Many_Many

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3 Posts   2946 Views


Community Member, 35 Posts

10 July 2009 at 9:58pm

Edited: 11/07/2009 12:31am

edit: I figured this out. For those interested, I installed DataObjectManager, renamed the folder to 'dataobject_manager', and added this code to the Business.php file

 function getCMSFields() {
 		$f = parent::getCMSFields();
		$manager = new ManyManyDataObjectManager(
		    $this, // Controller
			'Countries', // Source name
			'Country', // Source class
			array('Region'=>'Region','Name' => 'Name'), 
			'getCMSFields_forPopup'		);		
		$f->removeFieldFromTab('Root', 'Countries'); // replace the tab with MMDOM tab
		$f->addFieldToTab('Root.Country', $manager);
		return $f; }

Kinda new to this whole modeladmin thing, so excuse the probably daft question, but it seems fairly obvious that in a many_many relationship I'd want to be able to add an existing DataObject to my relationship, and I'm wondering how to implement this. Here's my current implementation (removed pointless stuff):


class ContactsManager extends ModelAdmin {
	public static $managed_models = array(Business','Country');
	static $url_segment = 'contact-us'; 
	static $menu_title = 'Contact Us';
class Country extends DataObject {
	static $db = array('Name' => 'Varchar');
	static $belongs_many_many = array ('Businesses' => 'Business');
class Business extends DataObject {	
	static $db = array('Title' => 'Varchar');
	static $has_one = array('Logo' => 'Image');
	static $many_many = array('Countries'=>'Country');	

Below is what I get when I edit a country (when I want to add an existing business)


Community Member, 23 Posts

24 November 2009 at 7:28am


does there already exist a solution for this kind of problem? I would need it urgently....



Community Member, 32 Posts

23 December 2009 at 10:55am

I had exactly the same issue with many_many relationships in ModelAdmin. Seems that there is a bug basically in ModelAdmin. In case you didn't notice, Ali's edit (at the top of the first post) is a fix that works great.