Revert applyFiltersFromModel change

[mjauvin]

Revert changes to original behavior - too many problems.

Addresses: #1222
Related: #927 #950 #1036 #1099

[LukeTowers]

@mjauvin was there another issue that popped up? I thought we dealt with all of them now

[mjauvin]

I thought so as well, but this is really hard to pinpoint where the problem comes from. Seems there is always a new case.

That's why I think what we were trying to fix vs what we are breaking is not worth it, makes the Form widget unreliable.

[LukeTowers]

@mjauvin seems a bit like throwing the baby out with the bathwater. If there's no current issues with the code I don't see why we should revert it.

[mjauvin]

@mjauvin seems a bit like throwing the baby out with the bathwater. If there's no current issues with the code I don't see why we should revert it.

There IS an issue, just didn't create it yet! 😝

[LukeTowers]

There IS an issue, just didn't create it yet! 😝

Well then let's hear it! 😂

[LukeTowers]

@mjauvin let me know if there's still an issue.

[mjauvin]

@LukeTowers yes, this is still an issue. When using filterFields() method or event to show/hide fields for more complex cases, the call to applyFiltersFromModel() in getSaveData() creates problems in create context since the form field values are not set in the filterFields handler (although they are before saving the form when resolving/refreshing field dependencies).

[mjauvin]

@LukeTowers I would not release 1.2.7 without reverting this.

[mjauvin]

@LukeTowers I am adding a PR to the Winter.Test plugin to demonstrate the issue.

[mjauvin]

The bug can be seen when using Winter.Test plugin under the Galleries model by creating/updating an gallery entry and selecting "active" status.

This PR is needed to see the issue: wintercms/wn-test-plugin#20

[mjauvin]

This PR resolves the issue: #1170

[mjauvin]

When Backend\Widgets\Form::getSaveData() is called from the FormController (create_onSave() & update_onSave((), the applyFiltersFromModel() call results in a call to the filterFields() method/event handler and its $this->allFields argument is empty.

This is introducing more problems than it ever solved.

[LukeTowers]

@mjauvin what's the latest on this?

[mjauvin]

It's not needed anymore, been replaced

[bennothommo]

@mjauvin would you be able to clarify the state of where we're at with this problem? Your comment last week mentioned this PR was not needed, but now it has been re-opened.

[mjauvin]

@mjauvin would you be able to clarify the state of where we're at with this problem? Your comment last week mentioned this PR was not needed, but now it has been re-opened.

Yeah, I just don't know how to fix this anymore. I have tried many different ways, but everytime I eventually find a situation where it breaks.

My best advice for now is to apply this PR to revert the initial changes. The case we were trying to solve in the first place is minor compared to all the other cases where it breaks it.

[bennothommo]

@mjauvin does the same issues occur when you use the form events / callbacks inside the controller, as opposed to those in the model? I think I've been fairly open with my dislike for the modification of the form within the model, so it'll be interesting to hear the difference.

[mjauvin]

@mjauvin does the same issues occur when you use the form events / callbacks inside the controller, as opposed to those in the model? I think I've been fairly open with my dislike for the modification of the form within the model, so it'll be interesting to hear the difference.

What do you mean exactly ?

[bennothommo]

Unless I was mistaken, the original issues were from using the filterFields function in a model (or the model.form.filterFields event) to hide a field. Can you hide a field using the extendFormFields static method of a controller, or use the formExtendFields method in the controller itself?

EDIT: https://wintercms.com/docs/v1.2/docs/backend/forms#extending-form-fields

[mjauvin]

@bennothommo you can use those methods, but they wouldn't be triggered by the dependsOn: field config, would they ?

[bennothommo]

I don't know myself. I tend to avoid this sort of magic and apply the rules to the models themselves through beforeSave callbacks or things of that nature. As I've said in the past, I've never liked the model having an effect on the form because it feels like an anti-pattern for an MVC-based CMS by skipping the controller.

[mjauvin]

I don't know myself. I tend to avoid this sort of magic and apply the rules to the models themselves through beforeSave callbacks or things of that nature. As I've said in the past, I've never liked the model having an effect on the form because it feels like an anti-pattern for an MVC-based CMS by skipping the controller.

I guess your forms requirements are not as complex as mine then...

[bennothommo]

Perhaps, and until someone presents a form configuration so complex as a test case, I'll remain blissfully unaware.

[mjauvin]

Perhaps, and until someone presents a form configuration so complex as a test case, I'll remain blissfully unaware.

All I'm saying is we should revert those changes as they break BC.

FYI: I was able to do what I want using events in the controller like this:

    public function relationExtendManageWidget($widget, $field, $model)
    {   
        if ($field != 'tasks') {
            return;
        }
        $widget->bindEvent('form.refreshFields', function ($allFields) use ($widget) {
            $fields = (object)$allFields;
            // manipulate fields here as it it were in filterFields
        });
    }