function hook_field_info_alter

Perform alterations on Field API field types.

Parameters

$info: Array of information on field types exposed by hook_field_info() implementations.

Related topics

Field Types API
Defines field, widget, display formatter, and storage types.
Hooks
Allow modules to interact with the Drupal core.
2 functions implement hook_field_info_alter()

Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.

email_field_info_alter in drupal/core/modules/field/modules/email/email.module
Implements hook_field_info_alter().
user_field_info_alter in drupal/core/modules/user/user.module
Implements hook_field_info_alter().

File

drupal/core/modules/field/field.api.php, line 183

Code

function hook_field_info_alter(&$info) {

  // Add a setting to all field types.
  foreach ($info as $field_type => $field_type_info) {
    $info[$field_type]['settings'] += array(
      'mymodule_additional_setting' => 'default value',
    );
  }

  // Change the default widget for fields of type 'foo'.
  if (isset($info['foo'])) {
    $info['foo']['default widget'] = 'mymodule_widget';
  }
}