WP Event Manager - Registrations Addon - Registration Limit Not Synchronized Between Languages

Overview of the issue

When creating an event with a registration limit with WP Event Manager and its WP Event Manager — Registrations addon, the registration limit is not synchronized between languages.

Workaround

Please, make sure of having a full site backup of your site before proceeding.

• Open …/wp-content/plugins/wp-event-manager-registrations/wp-event-manager-registrations-functions.php file.
• Look for line 497.
• Replace:

  if(!function_exists('get_event_registration_count')) {
      /**
       * Get number of registrations for a event
       * @param  int $event_id
       * @return int
       */
      function get_event_registration_count($event_id) {
          return sizeof(get_posts(array(
              'post_type'      => 'event_registration',
              'post_status'    => array_merge(array_keys(get_event_registration_statuses()), array('publish')),
              'posts_per_page' => -1,
              'fields'         => 'ids',
              'post_parent'    => $event_id
          )));
      }
  }
  

• With:

  if(!function_exists('get_event_registration_count')) {
      /**
       * Get number of registrations for a event
       * @param  int $event_id
       * @return int
       */
      function get_event_registration_count($event_id) {
          
          // WPML workaround for compsupp-7562 - Part I
          $translations = apply_filters( 'wpml_get_element_translations', null, $event_id, 'post_' . get_post_type($event_id) );
          
          // Extract the IDs of the translated posts
          $event_ids = array_map(function($translation) {
              return $translation->element_id;
          }, $translations);
      
          // Get event registrations for all translations
          return sizeof(get_posts(array(
              'post_type'      => 'event_registration',
              'post_status'    => array_merge(array_keys(get_event_registration_statuses()), array('publish')),
              'posts_per_page' => -1,
              'fields'         => 'ids',
              'post_parent__in' => $event_ids // Get all registrations for the event IDs
          )));
      }
      
  }
  

• Then, look for line 595.
• Replace:

  if(!function_exists('user_has_registered_for_event')) {
      /**
       * See if a user has already appled for a event
       * @param  int $user_id, $event_id
       * @return int
       */
      function user_has_registered_for_event($user_id, $event_id) {
          if(!$user_id) {
              return false;
          }
          return sizeof(get_posts(array(
              'post_type'      => 'event_registration',
              'post_status'    => array_merge(array_keys(get_event_registration_statuses()), array('publish')),
              'posts_per_page' => 1,
              'fields'         => 'ids',
              'post_parent'    => $event_id,
              'meta_query'     => array(
                  array(
                      'key' => '_attendee_user_id',
                      'value' => absint($user_id)
                  )
              )
          )));
      }
  }
  

• With:

  if(!function_exists('user_has_registered_for_event')) {
      /**
       * See if a user has already appled for a event
       * @param  int $user_id, $event_id
       * @return int
       */
      function user_has_registered_for_event($user_id, $event_id) {
          if(!$user_id) {
              return false;
          }
  
          // WPML Workaround for compsupp-7562 - Part II
          $translations = apply_filters( 'wpml_get_element_translations', null, $event_id, 'post_' . get_post_type($event_id) );
          
          // Extract the IDs of the translated posts
          $event_ids = array_map(function($translation) {
              return $translation->element_id;
          }, $translations);
  
          // Check if the user is registered for any translation of the event
          return sizeof(get_posts(array(
              'post_type'      => 'event_registration',
              'post_status'    => array_merge(array_keys(get_event_registration_statuses()), array('publish')),
              'posts_per_page' => 1,
              'fields'         => 'ids',
              'post_parent__in' => $event_ids, // Check all event translations
              'meta_query'     => array(
                  array(
                      'key'   => '_attendee_user_id',
                      'value' => absint($user_id)
                  )
              )
          ))) > 0;
      }
  
  }