belongsTo( 'Project' ); } public function external() { return $this->belongsTo( 'External' ); } public static function saveReservation( $reservationID, $reservation ) { $reservation = (array) $reservation; if ( $reservationID == 0 ) { $reservation = self::create( $reservation ); $reservationID = $reservation['id']; } else { self::whereId( $reservationID )->update( $reservation ); } return $reservationID; } public static function removeReservation( $reservationID ) { Reservation::whereId( $reservationID )->delete(); } }