eventespresso / event-espresso-core

    {

        // verify object

        if ($registration instanceof EE_Registration) {

            // update the entity mapper attendee

            $this->_refresh_registration_attendee($registration);

            // update the entity mapper answers for reg form questions

            $this->_refresh_registration_answers($registration);

            // make sure the cached registration is added to the model entity mapper

            $registration->get_model()->refresh_entity_map_with($reg_cache_ID, $registration);

        } else {

            EE_Error::add_error(

                __(

                    'An invalid Registration object was discovered when attempting to update the model entity mapper.',

                    'event_espresso'

                ),

                __FILE__,

                __FUNCTION__,

                __LINE__

        // now update the answers

        foreach ($registration->answers() as $cache_key => $answer) {

            // verify object

            if ($answer instanceof EE_Answer) {

                if ($answer->ID()) {

                    // make sure the cached answer is added to the model entity mapper

                    $answer->get_model()->refresh_entity_map_with($answer->ID(), $answer);

                }

            } else {

                EE_Error::add_error(

                    __(

                        'An invalid Answer object was discovered when attempting to update the model entity mapper.',

                        'event_espresso'

                    ),

                    __FILE__,

                    __FUNCTION__,

                    __LINE__