How to use hook_field_attach_validate in multistep wizard form [#1673502]

When I'm testing submission of standard node, hook_field_attach_validate is called.
I've added some field validation rules using field_validation module, but any of them work, because hook_field_attach_validate is not invoked.

Backtrace:
drupal_get_form => drupal_build_form => drupal_process_form => drupal_validate_form => _form_validate => form_execute_handlers => node_form_validate => entity_form_field_validate => field_attach_form_validate => field_attach_validate => field_validation_field_attach_validate

When testing ctools wizard (e.g. submit from step-2 to step-3), hook_field_attach_validate is not called.

Comments

Comment #1

kenorb CreditAttribution: kenorb commented 6 July 2012 at 13:29

I've tried to do some workaround like:

// ctools step callback
$form['#validate'][] = 'foo_form_field_validate';
...
/**
 * Additional validation form
 */
function foo_form_field_validate($form, &$form_state) {
  $node = ctools_object_cache_get('foo', 'node'); // get the latest node object from the cache
  field_attach_form_validate('node', $node, $form, $form_state);
}

but it's validating the whole form (all fields), not the current fields on the page.

I was testing it with newly created plugin for field_validation available here: #1672624: Validating end date versus start date when having separate fields

Comment #2

merlinofchaos CreditAttribution: merlinofchaos commented 6 July 2012 at 15:58

Why would it be? These are all just normal FAPI forms and it won't call any validation that you don't tell it to call.

Comment #3

kenorb CreditAttribution: kenorb commented 9 July 2012 at 08:40

Title:	hook_field_attach_validate is not called on multistep wizard form	» How to use hook_field_attach_validate in multistep wizard form
Category:	bug	» support

In that case the question is, how to use hook_field_attach_validate to validate only specified multistep page, instead of the whole form (all fields).