Hello,
I have some problems to show only a result list of a many_many-relation (without checkboxes and only the permission to 'show') with the DataObjectManager. I tried like this but it don't work. Can someone help me?

<?php
class BehandlungsListe extends DataObject {

	static $db = array(
		'Title' => 'Varchar(255)',
		'Name_de' => 'Varchar(255)'
		);
		
	static $belongs_many_many = array(
		'Anfragen' => 'Anfragen' 
	);
	
}

class Anfragen extends DataObject {
       
    static $many_many = array(
		'BehandlungsListe' => 'BehandlungsListe' 
	);

    function getCMSFields() {
		$fields = parent::getCMSFields();
 
		$AerzteTable = new DataObjectManager(
 		$this, 'BehandlungsListe', 'BehandlungsListe', null, null, "Anfragen_BehandlungsListe.AnfragenID = {$this->ID}");

 		$AerzteTable->setPermissions(array("show"));

 		$fields->addFieldToTab( 'Root.Main', $AerzteTable ); 
		
		return $fields;
	} 	
}
?>

What problems are you having?

I get this error:

[User Error] Couldn't run query: SELECT `BehandlungsListe`.*, `BehandlungsListe`.ID, if(`BehandlungsListe`.ClassName,`BehandlungsListe`.ClassName,'BehandlungsListe') AS RecordClassName FROM `BehandlungsListe` WHERE (Anfragen_BehandlungsListe.AnfragenID = 1) ORDER BY SortOrder ASC LIMIT 0,10 Unknown column 'Anfragen_BehandlungsListe.AnfragenID' in 'where clause'

You're not using the DataObjectManager correctly. It's meant to manage the relationships of DataObjects to Pages -- not other DataObjects. If you want to manage a many-many relation between two dataobjects, you need to use a CheckboxSetField in the popup of a DataObjectManager.

Tank You for the help.

I use it in the ModelAdmin and not in a Popup and my target is to get a simple listing with the results of the relation. this script is working but I get all the spells in the 'BehandlungsLsite' and i want only the results of the relation.

$AerzteTable = new ComplexTableField( $this,'BehandlungsListe', 'BehandlungsListe' );
$AerzteTable->setPermissions(array("show"));
$fields->addFieldToTab( 'Root.Main', $AerzteTable );