public function getButtonLink()
    {
        $link = Controller::join_links(
            'customaction',
            $this->actionName
        );
        return $this->gridFieldRequest->Link($link);
    }
public function getButtonLink()
    {
        $link = Controller::join_links(
            'customaction',
            $this->actionName
        );
        return $this->gridFieldRequest->Link($link);
    }
public function getButtonLink ( ) { $ link = Controller :: join_links ( 'customaction' , $ this -> actionName ) ; return $ this -> gridFieldRequest -> Link ( $ link ) ; }
Gets the link for the button
@return string
Gets the link for the button