GridFieldAddNewMultiClass::setItemRequestClass PHP Method

    public function setItemRequestClass($class)
    {
        $this->itemRequestClass = $class;
        return $this;
    }

 /**
  *
  * @param array $classname Name of class who's subclasses will be added to form
  * @param int $itemsPerPage - How many items per page should show up
  * @param boolean | string $sorting Allow sorting of rows, either false or the name of the sort column
  */
 public function __construct($classname, $itemsPerPage = null, $sort_col = false)
 {
     parent::__construct();
     // Setup Bulk manager
     $manager = new GridFieldBulkManager();
     $manager->removeBulkAction("unLink");
     $manager->addBulkAction('disable', 'Disable', 'CatalogueProductBulkAction');
     $manager->addBulkAction('enable', 'Enable', 'CatalogueProductBulkAction');
     /// Setup add new button
     $add_button = new GridFieldAddNewMultiClass("buttons-before-left");
     $add_button->setClasses($this->get_subclasses($classname));
     $this->addComponent(new GridFieldButtonRow('before'));
     $this->addComponent(new GridFieldToolbarHeader());
     $this->addComponent($sort = new GridFieldSortableHeader());
     $this->addComponent($filter = new GridFieldFilterHeader());
     $this->addComponent(new GridFieldDataColumns());
     $this->addComponent(new GridFieldEditButton());
     $this->addComponent(new GridFieldDeleteAction());
     $this->addComponent(new GridFieldPageCount('toolbar-header-right'));
     $this->addComponent($pagination = new GridFieldPaginator($itemsPerPage));
     $this->addComponent(new GridFieldExportButton("buttons-before-right"));
     // If we are manageing a category, use the relevent field, else use
     // product
     if ($classname == "Category") {
         $this->addComponent(new CatalogueCategoryDetailForm());
         $add_button->setItemRequestClass("CatalogueCategoryDetailForm_ItemRequest");
     } else {
         $this->addComponent(new CatalogueEnableDisableDetailForm());
         $add_button->setItemRequestClass("CatalogueEnableDisableDetailForm_ItemRequest");
     }
     $this->addComponent($add_button);
     if ($sort_col) {
         $this->addComponent(GridFieldOrderableRows::create($sort_col));
     }
     $sort->setThrowExceptionOnBadDataType(false);
     $filter->setThrowExceptionOnBadDataType(false);
     $pagination->setThrowExceptionOnBadDataType(false);
 }