| 1 field.api.php | hook_field_formatter_info_alter(&$info) | 
Perform alterations on Field API formatter types.
Parameters
$info: An array of information on formatter types exposed by hook_field_formatter_info() implementations.
Related topics
File
- core/modules/ field/ field.api.php, line 1115 
- Hooks provided by the Field module.
Code
function hook_field_formatter_info_alter(&$info) {
  // Add a setting to a formatter type.
  $info['text_default']['settings'] += array(
    'my_module_additional_setting' => 'default value',
  );
  // Let a new field type re-use an existing formatter.
  $info['text_default']['field types'][] = 'my_field_type';
}
