eventespresso / event-espresso-core

			}

			$registrations_csv_ready_array [] = $reg_csv_array;

		}

		if( $event_id ){

			$event_slug =  EEM_Event::instance()->get_var( array( array( 'EVT_ID' => $event_id ) ), 'EVT_slug' );

			if( ! $event_slug ) {

				$event_slug = __( 'unknown', 'event_espresso' );

			}

		}else{

			$event_slug = __( 'all', 'event_espresso' );

		}

		$filename = sprintf( "registrations-for-%s", $event_slug );

		$handle = $this->EE_CSV->begin_sending_csv( $filename);

     */

    protected function get_filename_from_event($event_id)

    {

        if ($event_id) {

            $event_slug = \EEM_Event::instance()->get_var(array(array('EVT_ID' => $event_id)), 'EVT_slug');

            if ( ! $event_slug) {

                $event_slug = __('unknown', 'event_espresso');

            }

        } else {

            $event_slug = __('all', 'event_espresso');

        }

        return sprintf("registrations-for-%s.csv", $event_slug);

    }