[development] decoupling form validation from error reporting and "actions" OR different use case for DANGEROUS_SKIP_CHECK

Roberto Gerola roberto.gerola at speedtech.it
Wed May 21 13:47:58 UTC 2008

On Wed, 2008-05-21 at 11:44 +0200, Ivan Sergio Borgonovo wrote:

> I'd consider *possible* that a user open another browser window
> and change the previous choices while it is in the middle of the
> process. Since the forms are dynamically built, when a $form is
> "regenerated" for submission it may be different from the one that was
> shown to the user.
> At this point form validation kick in and says
> "An illegal choice has been detected..."

I encountered the same issue working with dependent drop downs
filled by Ajax and JS code.

Here there is the technique I'm using in one of my projects.
Not sure it is the best approach, but it is the only one
I was able to implement when I ported my code from D5 to D6.

Hope this helps.



function storm_dependent_select_process($form, $edit, $form_state,
$complete_form) {
  return $form;

$form['group1']['project_nid'] = array(
    '#type' => 'select',
    '#title' => t('Project'),
    '#default_value' => $node->project_nid,
    '#options' => array(0 => '-') + $projects,
    '#process' => array('storm_dependent_select_process'),
    '#required' => true,
    '#attributes' => array('onchange' => "stormtask_project_tasks(this, 'edit-task-nid', true, '-')"),

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