Drupal 7.19
AT 7.x-3.1

When adding an AJAX callback to a form element in theme-settings.php, I get the following error when submitting the form or triggering the AJAX.

Fatal error: Call to undefined function at_core_settings_validate() in /includes/form.inc on line 1464

Here is the form element I'm adding.

...

$form['at-settings']['test_fieldset'] = array(
    '#type' => 'fieldset',
    '#title' => t('Test fieldset'),
  );

  $form['at-settings']['test_fieldset']['test'] = array(
    '#type' => 'checkbox',
     '#title' => t('test'),
     '#ajax' => array(
       'callback' => 'test_callback',
       'wrapper' => 'test-wrapper',
       'method' => 'replace',
     ),
  );

  $form['at-settings']['test_fieldset']['test_wrapper'] = array(
    '#type' => 'markup',
    '#markup' => '<div id="test-wrapper">No</div>'
  );
} // End themename_form_system_theme_settings_alter()

function test_callback($form, $form_state) {
  return 'yes';
}

This code works fine in Garland and other themes. Any help would be appreciated. Thanks much.

Comments

Jeff Burnz’s picture

Jeff Burnz commented

Hmmm, not sure, try explicitly including the function:

require_once(drupal_get_path('theme', 'adaptivetheme') . '/inc/forms/at_core.validate.inc');

AT calls a custom validation and submit function:

  // Include custom form validation and submit functions
  require_once(drupal_get_path('theme', 'adaptivetheme') . '/inc/forms/at_core.validate.inc');
  require_once(drupal_get_path('theme', 'adaptivetheme') . '/inc/forms/at_core.submit.inc');

  // Custom validate and submit functions
  $form['#validate'][] = 'at_core_settings_validate';
  $form['#submit'][] = 'at_core_settings_submit';
richardbporter’s picture

richardbporter commented

That didn't work for me. Can you reproduce this or is it just something I'm doing wrong?

Not sure if the call stack would help, but ...

 Fatal error: Call to undefined function at_core_settings_validate() in /includes/form.inc on line 1464
Call Stack
#	Time	Memory	Function	Location
1	0.0017	707656	{main}( )	../index.php:0
2	0.2916	41360888	menu_execute_active_handler( )	../index.php:21
3	0.2981	42610360	call_user_func_array ( )	../menu.inc:517
4	0.2981	42610784	drupal_get_form( )	../menu.inc:0
5	0.2981	42611808	drupal_build_form( )	../form.inc:131
6	0.3019	43079416	drupal_process_form( )	../form.inc:374
7	0.5110	45654528	drupal_validate_form( )	../form.inc:846
8	0.5111	45655184	_form_validate( )	../form.inc:1134
9	0.5832	45723184	form_execute_handlers( )	../form.inc:1404

Thanks again.

Jeff Burnz’s picture

Jeff Burnz commented

I haven't had time to test this, I keep meaning to but time is such a premium at the moment.

alisamar’s picture

alisamar commented

This Drupal core bug has been reported before. http://drupal.org/node/1296362 No progress yet

Jeff Burnz’s picture

Jeff Burnz commented
Status: Active » Closed (duplicate)

#1296362: Getting AJAX Error when handling ajax request in hook_form_alter where form element has #element_validate that comes from a them

richardbporter’s picture

richardbporter commented

Thanks for the info.

vvvi’s picture

vvvi commented
Issue summary: View changes

I got that error when used a 'managed_file' form element in hook_form_system_theme_settings_alter(). Resolved by adding:

function hook_form_system_theme_settings_alter(&$form, &$form_state) {   
  ... 
  $form_state['build_info']['files'][] = drupal_get_path('theme', 'adaptivetheme') . '/inc/forms/at_core.validate.inc';
  $form_state['build_info']['files'][] = drupal_get_path('theme', 'adaptivetheme') . '/inc/forms/at_core.submit.inc';
}
Chipie’s picture

Chipie commented

@VVVi: Thanks for sharing this. It solved my problem.