Conditional actions: required / optional

same issue here

Remember that required fields that are hidden are no-longer required. So in your use case, use the CALL ME BACK checkbox to show the required PHONE NUMBER field.

Please re-open if there is a more compelling use case that the above doesn't address.

Hello Dan.

You're right, but in my case (and I assume in Mark's case too) the phone number still providable by users anyhow : The phone number field should never be hidden. In one case, its mandatory in another its optional, but hiding it doesn't suit my case.

I think the workaround could be creating two phone number fields, one required and one not required. When the "Call me back" checkbox is unchecked the not required field will be shown and the required one will be hidden. When the checkbox is checked the required phone number field will be shown and the not required one will be hidden.

Yes certainly but it's quite dirty :)

The way i'm dealing with for now is by adding a custom #validate function to the form webform to check the case backend side and a JQuery script for applying "required" display on the needed fields on the frontend side. That works, but it would be so great if webform conditionals would be able to add two more actions ("set mandatory" & "set optional") to the classic "Hide" and "Show" in conditions.

Seems pretty reasonable. Patches welcome. Remember there is a server and a jQuery part.

not a piece of cake though :) ...

Active is the correct status as there currently is not patch the "needs work". :) Doesn't matter much, but I sometimes search for "needs work" issues to see if I can fix the patch.

Working on this. For the record, a webform-related module can respond to the insertion and removal of the required span with something like (just an example -- you wouldn't want this):

  Drupal.behaviors.your_behavior_name = {
    attach: function(context, settings) {
      $('.form-required').once('your_behavior_name').parent().css('background-color', 'red');
    },
    detach: function(context, settings) {
      $('.form-required').parent().css('background-color', 'white');
    }
  };

Here's a patch for review.

1. Defines a new action, "required".
2. Generates a map of required status while conditionals are being executed on the server.
3. Queries that map during submission validation.
4. In the browser, inserts and removes the standard core required span tag. Note that this feature won't be compatible with themes that override the standard. I'm open for suggestions about how to improve the flexibility.
5. Drupal.attachBehaviors and detachBehaviors is called before and after removing the required and not-required spans.

Committed to 7.x-4.x.

Testing is welcome. ;)

Committed and pushed to 8.x-4.x. Thanks!