gistfile1.aw

<?php

         $filter->add('editor', 'doctrine_orm_callback', array(
             'field_type'=> 'text',
            'callback' => function($queryBuilder, $alias, $field, $value) {

                $val = $value['value'];
                
                if(!$value || strlen($val) <= 0){
                    return;
                }

                $queryBuilder->leftJoin(sprintf('%s.editors', $alias), 'e');
                $queryBuilder->leftJoin(sprintf('e.editor', $alias), 'ed');
                $queryBuilder->andWhere('ed.name LIKE = :name');
                $queryBuilder->setParameter('name', '%' . $val . '%');
                
                return true;
                
            
             }     
         ));