Hi,

thanks for your answer this are good news! At least I know is my mistake.

I did more or less the same. I create a class Program as a Page and Module as a DataObject, the relation is many_many. But I get the same, I open pages then Program and go to the tab Modules, there I have the table with all the modules I added from the dataobject, but there is noway to link then in a relationship, checkbox that will insert the relation in the table Program_Modules.

******** Program.php *********

class Program extends Page {
   
   
   static $many_many = array(
      'Modules' => 'Module'
   );

   
   function getCMSFields() {
    $fields = parent::getCMSFields();
      
      $dList = DataList::create('Module');
      
      $gridFieldConfig = GridFieldConfig_RelationEditor::create();

      $gridFieldConfig->getComponentByType('GridFieldAddExistingAutocompleter')->setSearchFields('Name');
      
$gridField = new GridField('Modules', 'Modules', $dList, $gridFieldConfig);
      
      $fields->addFieldToTab( 'Root.Content.Modules', $gridField);
      
    return $fields;
   }
   
}

class Program_Controller extends Page_Controller {
   
}

******** Modules.php **********

class Module extends DataObject {
   
   static $db = array(
      'Name' => 'Text'
   );
   
   static $belongs_many_many = array(
      'Programs' => 'Program'
   );
   
   static $summary_fields = array(
'Name' => 'Name'
);
   
}

I will be really gratefull if you Could you explain where I fail and how you do, please. Greetings

You need to pass the RelationList to the GridField, not just a DataList. So you want

Same upload problem continues with fresh RC3 too. Tried on two different servers with php 5.3 and 5.4

I do have exactly the same problem in SS 3.0.0 stable. I'm using a very simple DataObject code:

Anybody else facing this problem?