function _makemeeting_clear_referencing_fields in Make Meeting Scheduler 7.2

Get all fields referencing a given bundle.

Parameters

$entity_type: The entity type of the bundle.

$bundle: The referenced bundle.

Return value

array An array of field names being able to reference the given bundle.

1 call to _makemeeting_clear_referencing_fields()

_makemeeting_clear_referencing_entity_cache in ./makemeeting.module

Invalidate referencing entities caches.

File

./makemeeting.module, line 274

Hooks and field implementations

Code

function _makemeeting_clear_referencing_fields($entity_type, $bundle) {
  $static =& drupal_static(__FUNCTION__, array());

  // Use a static temporary cache to avoid using too mush resources.
  if (array_key_exists($entity_type, $static) && array_key_exists($bundle, $static[$entity_type])) {
    return $static[$entity_type][$bundle];
  }
  $fields = field_info_fields();
  $static[$entity_type][$bundle] = array();
  foreach ($fields as $field_name => $field) {

    // Check if the field is an entityreference field.
    if ($field['type'] != 'entityreference') {
      continue;
    }

    // Check if the entity_type match the target_type of the field.
    if ($field['settings']['target_type'] != $entity_type) {
      continue;
    }

    // If the field is using the base handler check if the bundle is allowed.
    if ($field['settings']['handler'] == 'base' && !in_array($bundle, $field['settings']['handler_settings']['target_bundles'])) {
      continue;
    }
    $static[$entity_type][$bundle][] = $field_name;
  }
  return $static[$entity_type][$bundle];
}