src/Forms/GridField/GridFieldDetailForm_ItemRequest.php
public function doNew($data, $form)
    {
        return $this->redirect(Controller::join_links($this->gridField->Link('item'), 'new'));
    }
public function doNew($data, $form)
    {
        return $this->redirect(Controller::join_links($this->gridField->Link('item'), 'new'));
    }
public function doNew ( $ data , $ form ) { return $ this -> redirect ( Controller :: join_links ( $ this -> gridField -> Link ( 'item' ) , 'new' ) ) ; }
Creates a new record. If you're already creating a new record,
this forces the URL to change.

@param  array $data The form data
@param  Form $form The Form object
@return HTTPResponse
Creates a new record . If you re already creating a new record this forces the URL to change .