function EntityFieldManager::loadExtraFields

Loads extra fields from cache, or rebuilds them.

Return value

array[][][][] Extra fields by entity type, bundle name, type (form/display) and extra field name.

File

core/lib/Drupal/Core/Entity/EntityFieldManager.php, line 666

Class

EntityFieldManager

Manages the discovery of entity fields.

Namespace

Code

protected function loadExtraFields() : array {
    // Read from the persistent cache. Since hook_entity_extra_field_info() and
    // hook_entity_extra_field_info_alter() might contain t() calls, we cache
    // per language.
    $cache_id = 'entity_extra_field_info:' . $this->languageManager
        ->getCurrentLanguage()
        ->getId();
    $cached = $this->cacheGet($cache_id);
    if ($cached) {
        return $cached->data;
    }
    $extra = $this->moduleHandler
        ->invokeAll('entity_extra_field_info');
    $this->moduleHandler
        ->alter('entity_extra_field_info', $extra);
    // Apply default values to each bundle.
    foreach ($extra as $entity_type_id => $extra_fields_by_bundle) {
        foreach ($extra_fields_by_bundle as $bundle => $bundle_extra_fields) {
            $extra[$entity_type_id][$bundle] += [
                'form' => [],
                'display' => [],
            ];
        }
    }
    $this->cacheSet($cache_id, $extra, Cache::PERMANENT, [
        'entity_field_info',
    ]);
    return $extra;
}