Club Drupal

/**

 * Implements hook_field_info_alter().

 */

function i18n_field_field_info_alter(&$field_info) {

  foreach(array_keys($field_info) as $type) {

    $field_info[$type]['property_callbacks'][] = 'i18n_field_entity_property_callback';

  }

}

/**

 * Callback to translate entity property info for a fields.

 *

 * @see entity_metadata_field_entity_property_info()

 * @see entity_metadata_field_default_property_callback()

 * @see i18n_field_i18n_object_info_alter()

 * @see hook_module_implements_alter()

 */

function i18n_field_entity_property_callback(&$info, $entity_type, $field, $instance, $field_type) {

  global $language;

  // This could create a endless recursion if it's called during rebuilding the

  // cache for i18n_object_info(). So if the cache of i18n_object_info isn't

  // available yet we assume the worst case, leave the info alone but trigger a

  // rebuild of the property when hook_i18n_object_info_alter is invoked. At

  // that point the info is available and we can rely on it.

  if (!$info = &drupal_static('i18n_object_info')) {

    $i18n_field_entity_property_callback_fallback = &drupal_static(__FUNCTION__);

    $i18n_field_entity_property_callback_fallback = TRUE;

    return;

  }

  $name = $field['field_name'];

  $property = &$info[$entity_type]['bundles'][$instance['bundle']]['properties'][$name];

  $property['label'] = i18n_field_translate_property($instance, 'label', $language->language);

}

/**

 * Implements hook_i18n_object_info_alter().

 */

function i18n_field_i18n_object_info_alter(&$info) {

  if (drupal_static('i18n_field_entity_property_callback')) {

    if ($info = drupal_static('i18n_object_info')) {

      // Clean static and permanent cache of the data and then re-run the property

      // building.

      drupal_static_reset('entity_get_property_info');

      cache_clear_all('entity_property_info:' . $GLOBALS['language']->language, 'cache');

      entity_get_property_info();

    }

    else {

      watchdog('i18n_field', 'Unable to run fall-back handling for entity property translation due missing "i18n_object_info" cache', array(), WATCHDOG_WARNING);

    }

  }

}

/**

 * Implements hook_module_implements_alter().

 */

function i18n_field_module_implements_alter(&$implementations, $hook) {

  if ($hook == 'i18n_object_info_alter') {

    // Move our hook implementation to the bottom.

    $group = $implementations['i18n_field'];

    unset($implementations['i18n_field']);

    $implementations['i18n_field'] = $group;

  }

}