public function getColumnEditTag($column, $params = array())
 {
     if ($column->isComponent()) {
         $moduleName = $this->getModuleName();
         $componentName = $column->getName();
         if (false !== ($pos = strpos($componentName, '/'))) {
             $moduleName = substr($componentName, 0, $pos);
             $componentName = substr($componentName, $pos + 1);
         }
         return "get_component('{$moduleName}', '{$componentName}', array('type' => 'edit', '{$this->getSingularName()}' => \${$this->getSingularName()}))";
     }
     return parent::getColumnEditTag($column, $params);
 }