function hook_field_attach_extract_form_values

Act on field_attach_extract_form_values().

This hook is invoked after the field module has performed the operation.

Parameters

\Drupal\Core\Entity\EntityInterface $entity: The entity for which an edit form is being submitted. The incoming form values have been extracted as field values of the $entity object.

$form: The form structure field elements are attached to. This might be a full form structure, or a sub-part of a larger form. The $form['#parents'] property can be used to identify the corresponding part of $form_state['values'].

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

Related topics

Field Attach API
Operates on Field API data attached to Drupal entities.
Hooks
Allow modules to interact with the Drupal core.
1 invocation of hook_field_attach_extract_form_values()
field_attach_extract_form_values in drupal/core/modules/field/field.attach.inc
Populates an entity object with values from a form submission.

File

drupal/core/modules/field/field.api.php, line 925

Code

function hook_field_attach_extract_form_values(\Drupal\Core\Entity\EntityInterface $entity, $form, &$form_state) {

  // Sample case of an 'Empty the field' checkbox added on the form, allowing
  // a given field to be emptied.
  $values = NestedArray::getValue($form_state['values'], $form['#parents']);
  if (!empty($values['empty_field_foo'])) {
    unset($entity->field_foo);
  }
}