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7 field.api.php hook_field_extra_fields()

Exposes "pseudo-field" components on fieldable entities.

Field UI's "Manage fields" and "Manage display" pages let users re-order fields, but also non-field components. For nodes, these include the title, poll choices, and other elements exposed by modules through hook_form() or hook_form_alter().

Fieldable entities or modules that want to have their components supported should expose them using this hook. The user-defined settings (weight, visible) are automatically applied on rendered forms and displayed entities in a #pre_render callback added by field_attach_form() and field_attach_view().

Return value

A nested array of 'pseudo-field' components. Each list is nested within the following keys: entity type, bundle name, context (either 'form' or 'display'). The keys are the name of the elements as appearing in the renderable array (either the entity form or the displayed entity). The value is an associative array:

  • label: The human readable name of the component.
  • description: A short description of the component contents.
  • weight: The default weight of the element.

See also



7 functions implement hook_field_extra_fields()

1 invocation of hook_field_extra_fields()


drupal/modules/field/field.api.php, line 35


function hook_field_extra_fields() {
  $extra['node']['poll'] = array(
    'form' => array(
      'choice_wrapper' => array(
        'label' => t('Poll choices'), 
        'description' => t('Poll choices'), 
        'weight' => -4,
      'settings' => array(
        'label' => t('Poll settings'), 
        'description' => t('Poll module settings'), 
        'weight' => -3,
    'display' => array(
      'poll_view_voting' => array(
        'label' => t('Poll vote'), 
        'description' => t('Poll vote'), 
        'weight' => 0,
      'poll_view_results' => array(
        'label' => t('Poll results'), 
        'description' => t('Poll results'), 
        'weight' => 0,

  return $extra;