Add JS to node add/edit form

By bkosborne on 18 Aug 2011 at 19:11 UTC

Hello all!

I'm writing some custom JS that needs to be added to the node form add/edit page for a specific content type. Looking thru what operations I could use for hook_nodeapi, I thought 'prepare' might work. However, it seems that it doesn't get invoked if a form validation error occurs.

I came across this stack overflow post regarding the issue, which suggests overriding the template function for the form and adding in my JS. Is that the best solution?
http://stackoverflow.com/questions/2584405/adding-js-to-a-drupal-node-form

Thank you

Brian

Comments

I might be being a bit thick,

Web Assistant commented 18 August 2011 at 20:38

I might be being a bit thick, but can't you just add the JS via hook_form_alter()?

I think the forms alters and

bkosborne

English

New Jersey, USA

commented 18 August 2011 at 20:57

I think the forms alters and only called when the form is rebuilt - which doesn't happen in form validations and a few other instances i believe.

afterbuild function

zbricoleur commented 29 August 2011 at 21:07

Use hook_form_alter to add an afterbuild function. That will add the js even on validation errors.

function mymodule_form_alter(&$form, &$form_state, $form_id) {
  switch ($form_id) {
    case 'my_form':
      $form['#after_build'][] = 'mymodule_after_build';
      break;
  }
}

function mymodule_after_build($form, &$form_state) {
  $path = drupal_get_path('module', 'mymodule');
  drupal_add_js ("$path/mymodule.js");
  return $form;
}