Simple hook_form_alter on node form

By Joe_Smith on 17 Aug 2013 at 13:00 UTC

I have made a custom content type called "car". It has a text field called "field_color". I have made a custom module called "car_form".

This works:

// adds the text "Welcome to the form" to the top of the form
function car_form_form_alter(&$form, &$form_state, $form_id) {
  if ($form_id == 'car_node_form') {
     $form['welcome'] = array(
      '#markup' => '<h3 class="form-section-title">Welcome to the form</h3>',
    );
  }
}

This does not work (nothing happens):

// This code intends to change the label for the "color" field
function car_form_form_alter(&$form, &$form_state, $form_id) {
  if ($form_id == 'car_node_form') {
    $form['field_color']['und']['#title'] = t('What color is your car?');
  }
}

Seems like a simple issue. Can anyone help?

Comments

You are targeting the

Jaypan commented 17 August 2013 at 15:34

You are targeting the incorrect location. You can do a dump of the form using:

drupal_set_mesage('<pre>' . print_r($form['field_color'], TRUE) . '</pre>');

But I suspect you want this:

// This code intends to change the label for the "color" field
function car_form_form_alter(&$form, &$form_state, $form_id) {
  if ($form_id == 'car_node_form') {
    $form['field_color'][LANGUAGE_NONE][0]['#title'] = t('What color is your car?');
  }
}

The location does not appear in the form dump

Joe_Smith commented 17 August 2013 at 16:11

Thanks for your reply. The location $form['field_color'][LANGUAGE_NONE][0]['#title'] does not appear in the form dump. "Title" appears 5 times in the dump you suggested:

1. $form['und']['0']['#entity']->title
2. $form['und']['0']['#title']
3. $form['und']['0']['value']['#entity']->title
4. $form['und']['0']['value']['#title']
5. $form['und']['#title']

None of these work. I do wonder what is stopping hook_form_alter!