function _field_invoke_get_instances

Helper for _field_invoke(): retrieves a list of instances to operate on.

Parameters

$entity_type: The entity type.

$bundle: The bundle name.

$options: An associative array of options, as provided to _field_invoke(). Only the following keys are considered :

• deleted
• field_name

See _field_invoke() for details.

Return value

The array of selected instance definitions.:

Related topics

File

core/modules/field/field.attach.inc, line 383

Field attach API, allowing entities (nodes, users, ...) to be 'fieldable'.

Code

function _field_invoke_get_instances($entity_type, $bundle, $options) {
  if ($options['deleted']) {
    // Deleted fields are not included in field_info_instances(), and need to
    // be fetched from the database with field_read_instances().
    $params = array('entity_type' => $entity_type, 'bundle' => $bundle);
    if (isset($options['field_name'])) {
      $params['field_name'] = $options['field_name'];
    }
    $instances = field_read_instances($params, array('include_deleted' => TRUE));
  }
  elseif (isset($options['field_name'])) {
    // Single-field mode by field name: field_info_instance() does the
    // filtering.
    $instances = array(field_info_instance($entity_type, $options['field_name'], $bundle));
  }
  else {
    $instances = field_info_instances($entity_type, $bundle);
    if (isset($options['field_name'])) {
      // Single-field mode by field id: we need to loop on each instance to
      // find the right one.
      foreach ($instances as $instance) {
        if ($instance['field_name'] == $options['field_name']) {
          $instances = array($instance);
          break;
        }
      }
    }
  }

  return $instances;
}