Is it possible without touching Dupal core's code, add some configuration option to content type edit page? preferably to vertical tabs of bottom? such as a checkbox.

I mean this page: /admin/structure/types/manage/article

3 Answers 3


Yes, you can add a fieldset to the content type edit form with hook_form_FORM_ID_alter.


function MYMODULE_form_node_type_form_alter(&$form, &$form_state) {
    // Define field set in additional settings group
    $form['advanced'] = array(
      '#type' => 'fieldset',
      '#title' => t('Advanced settings'),
      '#collapsible' => TRUE,
      '#collapsed' => TRUE,
      '#weight' => 10,
      '#group' => 'additional_settings',
    // Add checkbox option
    $form['advanced']['special_option'] = array(
      '#type' => 'checkbox',
      '#title' => t('Use special option'),
    // Set default value from automatically saved config variable
    $form['advanced']['special_option']['#default_value'] = variable_get('special_option_' . $form['#node']->type, 1);

  • I must be missing something, but my custom advanced option is not saved automatically in the {variable} table... Maybe I must implement some other hooks to save the custom option?
    – anou
    Mar 29, 2015 at 11:30
  • 1
    I think $form['#node_type']->type is more $form['#node']->typeor $form['type']['#value'] or $form['#bundle']...
    – anou
    Mar 29, 2015 at 13:32

Ok I found the answer: seems to be needed to add a submit function to your $form, to set the variable to store.

In the MYMODULE_form_node_form_alter() function, add:

$form['#submit'][] = 'MYMODULE_node_form_submit';

then the submit function:

function userprog_node_form_submit ($form, &$form_state) {
  $special = $form_state['values']['special_option'];

  variable_set('MYMODULE_' . $form_state['values']['type'] . '_special_option', $special);

NB: the variable_get() in the hook_form_alter() function, becomes:

// Set default value from automatically saved config variable
$form['advanced']['special_option']['#default_value'] = variable_get('MYMODULE_' . $form['#node_type']->type . '_special_option', 1);

You could also have a look at the nodeapi_example module. (From the Drupal Example modules).

It gives a quite legible example on adding a setting to the content type edit page AND an extra 'setting'/option to every node for which it is enabled.

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