PodsField_Pick::related_objects PHP Method

    public function related_objects($force = false)
    {
        if ($this->setup_related_objects($force) || null === self::$names_related) {
            $related_objects = array();
            foreach (self::$related_objects as $related_object_name => $related_object) {
                if (!isset($related_objects[$related_object['group']])) {
                    $related_objects[$related_object['group']] = array();
                }
                $related_objects[$related_object['group']][$related_object_name] = $related_object['label'];
            }
            self::$names_related = (array) apply_filters('pods_form_ui_field_pick_related_objects', $related_objects);
        }
        return self::$names_related;
    }

 /**
  * Setup related objects
  *
  * @param boolean $force Whether to force refresh of related objects
  * @return bool True when data has been loaded
  * @since 2.3
  */
 public function setup_related_objects($force = false)
 {
     $new_data_loaded = false;
     if (!$force && empty(self::$related_objects)) {
         // Only load transient if we aren't forcing a refresh
         self::$related_objects = pods_transient_get('pods_related_objects');
         if (false !== self::$related_objects) {
             $new_data_loaded = true;
         }
     } elseif ($force) {
         // If we are rebuilding, make sure we start with a clean slate
         self::$related_objects = array();
     }
     if (empty(self::$related_objects)) {
         // Do a complete build of related_objects
         $new_data_loaded = true;
         // Custom
         self::$related_objects['custom-simple'] = array('label' => __('Simple (custom defined list)', 'pods'), 'group' => __('Custom', 'pods'), 'simple' => true);
         // Pods
         $pod_options = array();
         // Include PodsMeta if not already included
         pods_meta();
         // Advanced Content Types
         $_pods = PodsMeta::$advanced_content_types;
         foreach ($_pods as $pod) {
             $pod_options[$pod['name']] = $pod['label'] . ' (' . $pod['name'] . ')';
         }
         // Settings
         $_pods = PodsMeta::$settings;
         foreach ($_pods as $pod) {
             $pod_options[$pod['name']] = $pod['label'] . ' (' . $pod['name'] . ')';
         }
         asort($pod_options);
         foreach ($pod_options as $pod => $label) {
             self::$related_objects['pod-' . $pod] = array('label' => $label, 'group' => __('Pods', 'pods'), 'bidirectional' => true);
         }
         // Post Types
         $post_types = get_post_types();
         asort($post_types);
         $ignore = array('attachment', 'revision', 'nav_menu_item');
         foreach ($post_types as $post_type => $label) {
             if (in_array($post_type, $ignore) || empty($post_type)) {
                 unset($post_types[$post_type]);
                 continue;
             } elseif (0 === strpos($post_type, '_pods_') && apply_filters('pods_pick_ignore_internal', true)) {
                 unset($post_types[$post_type]);
                 continue;
             }
             $post_type = get_post_type_object($post_type);
             self::$related_objects['post_type-' . $post_type->name] = array('label' => $post_type->label . ' (' . $post_type->name . ')', 'group' => __('Post Types', 'pods'), 'bidirectional' => true);
         }
         // Taxonomies
         $taxonomies = get_taxonomies();
         asort($taxonomies);
         $ignore = array('nav_menu', 'post_format');
         foreach ($taxonomies as $taxonomy => $label) {
             if (in_array($taxonomy, $ignore) || empty($taxonomy)) {
                 unset($taxonomies[$taxonomy]);
                 continue;
             } elseif (0 === strpos($taxonomy, '_pods_') && apply_filters('pods_pick_ignore_internal', true)) {
                 unset($taxonomies[$taxonomy]);
                 continue;
             }
             $taxonomy = get_taxonomy($taxonomy);
             self::$related_objects['taxonomy-' . $taxonomy->name] = array('label' => $taxonomy->label . ' (' . $taxonomy->name . ')', 'group' => __('Taxonomies', 'pods'), 'bidirectional' => true);
         }
         // Other WP Objects
         self::$related_objects['user'] = array('label' => __('Users', 'pods'), 'group' => __('Other WP Objects', 'pods'), 'bidirectional' => true);
         self::$related_objects['role'] = array('label' => __('User Roles', 'pods'), 'group' => __('Other WP Objects', 'pods'), 'simple' => true, 'data_callback' => array($this, 'data_roles'));
         self::$related_objects['capability'] = array('label' => __('User Capabilities', 'pods'), 'group' => __('Other WP Objects', 'pods'), 'simple' => true, 'data_callback' => array($this, 'data_capabilities'));
         self::$related_objects['media'] = array('label' => __('Media', 'pods'), 'group' => __('Other WP Objects', 'pods'), 'bidirectional' => true);
         self::$related_objects['comment'] = array('label' => __('Comments', 'pods'), 'group' => __('Other WP Objects', 'pods'), 'bidirectional' => true);
         self::$related_objects['image-size'] = array('label' => __('Image Sizes', 'pods'), 'group' => __('Other WP Objects', 'pods'), 'simple' => true, 'data_callback' => array($this, 'data_image_sizes'));
         self::$related_objects['nav_menu'] = array('label' => __('Navigation Menus', 'pods'), 'group' => __('Other WP Objects', 'pods'));
         self::$related_objects['post_format'] = array('label' => __('Post Formats', 'pods'), 'group' => __('Other WP Objects', 'pods'));
         self::$related_objects['post-status'] = array('label' => __('Post Status', 'pods'), 'group' => __('Other WP Objects', 'pods'), 'simple' => true, 'data_callback' => array($this, 'data_post_stati'));
         do_action('pods_form_ui_field_pick_related_objects_other');
         self::$related_objects['country'] = array('label' => __('Countries', 'pods'), 'group' => __('Predefined Lists', 'pods'), 'simple' => true, 'data_callback' => array($this, 'data_countries'));
         self::$related_objects['us_state'] = array('label' => __('US States', 'pods'), 'group' => __('Predefined Lists', 'pods'), 'simple' => true, 'data_callback' => array($this, 'data_us_states'));
         self::$related_objects['days_of_week'] = array('label' => __('Calendar - Days of Week', 'pods'), 'group' => __('Predefined Lists', 'pods'), 'simple' => true, 'data_callback' => array($this, 'data_days_of_week'));
         self::$related_objects['months_of_year'] = array('label' => __('Calendar - Months of Year', 'pods'), 'group' => __('Predefined Lists', 'pods'), 'simple' => true, 'data_callback' => array($this, 'data_months_of_year'));
         do_action('pods_form_ui_field_pick_related_objects_predefined');
         if (did_action('init')) {
             pods_transient_set('pods_related_objects', self::$related_objects);
         }
     }
     foreach (self::$custom_related_objects as $object => $related_object) {
         if (!isset(self::$related_objects[$object])) {
             $new_data_loaded = true;
             self::$related_objects[$object] = $related_object;
         }
     }
     return $new_data_loaded;
 }