eventespresso / event-espresso-core

	 * @param string $message_type the message type slug

	 * @return boolean

	 */

	public function message_sent_for_attendee( $attendee, $message_type ) {

		$attendee_ID = EEM_Attendee::instance()->ensure_is_ID( $attendee );

		return $this->exists( array( array(

			'Attendee.ATT_ID' => $attendee_ID,

			'MSG_message_type' => $message_type,

			'STS_ID' => array( 'IN', $this->stati_indicating_sent() )

		) ) );

	}

	 * @param string $message_type the message type slug

	 * @return boolean

	 */

	public function message_sent_for_registration( $registration, $message_type ) {

		$registrationID = EEM_Registration::instance()->ensure_is_ID( $registration );

		return $this->exists( array( array(

			'Registration.REG_ID' => $registrationID,

			'MSG_message_type' => $message_type,

			'STS_ID' => array( 'IN', $this->stati_indicating_sent() )

		) ) );

	}