function _field_invoke_get_instances in Drupal 7

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
• field_id

See _field_invoke() for details.

Return value

The array of selected instance definitions.

Related topics

3 calls to _field_invoke_get_instances()

field_attach_load in modules/field/field.attach.inc

Loads fields for the current revisions of a group of entities.

_field_invoke in modules/field/field.attach.inc

Invoke a field hook.

_field_invoke_multiple in modules/field/field.attach.inc

Invoke a field hook across fields on multiple entities.

File

modules/field/field.attach.inc, line 420

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_id'])) {

      // Single-field mode by field id: field_read_instances() does the filtering.
      // Single-field mode by field name is not compatible with the 'deleted'
      // option.
      $params['field_id'] = $options['field_id'];
    }
    $instances = field_read_instances($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_id'])) {

      // 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_id'] == $options['field_id']) {
          $instances = array(
            $instance,
          );
          break;
        }
      }
    }
  }
  return $instances;
}