1 field.api.php hook_field_widget_form_alter(&$element, &$form_state, $context)

Alter forms for field widgets provided by other modules.


$element: The field widget form element as constructed by hook_field_widget_form().

$form_state: An associative array containing the current state of the form.

$context: An associative array containing the following key-value pairs, matching the arguments received by hook_field_widget_form():

  • form: The form structure to which widgets are being attached. This may be a full form structure, or a sub-element of a larger form.
  • field: The field structure.
  • instance: The field instance structure.
  • langcode: The language associated with $items.
  • items: Array of default values for this field.
  • delta: The order of this item in the array of subelements (0, 1, 2, etc).

See also



Related topics


core/modules/field/field.api.php, line 933
Hooks provided by the Field module.


function hook_field_widget_form_alter(&$element, &$form_state, $context) {
  // Add a css class to widget form elements for all fields of type mytype.
  if ($context['field']['type'] == 'mytype') {
    // Be sure not to overwrite existing attributes.
    $element['#attributes']['class'][] = 'myclass';