[LiveComponent] onUpdated don't triggered when using ComponentWithFormTrait with LiveProp to edit

[akyoscommunication]

          Hello, I also have the same problem,

I also have the same problem. After some research, I noticed that when using a LiveProp assigned to a form that is instantiated with ComponentWithFormTrait, the variable name must not be the same as the form name.

example:

    #[LiveProp(writable: true, updateFromParent: true, onUpdated: 'onUpdatedComponent')]
    public Component $component ;

    protected function instantiateForm() : FormInterface
    {
        return $this->createForm(ComponentType::class, $this->component) ;
    }

error :

An exception was thrown when rendering a model ("The field name ‘component’ cannot be used by multiple LiveProp properties in a component. Currently, “component” and “formValues” are both trying to use it in “xxx”. Try adding LiveProp(fieldName=“somethingElse”) for the “component” property to avoid this.").

Consequence:

If we change our variable like this

    #[LiveProp(writable : true, updateFromParent : true, onUpdated : 'onUpdatedComponent')]]
    public Component $c ;

    protected function instantiateForm() : FormInterface
    {
        return $this->createForm(ComponentType::class, $this->c) ;
    }

The onUpdated function cannot be triggered because, on line 664 of ux-live-component/src/LiveComponentHydrator.php, the $frontendName variable is equal to “c”. However, what we want is to have “component”, since on line 673, we check whether we have “c” in $dehydratedUpdatedProps. But the problem is that in this last variable, the Live Component only updates the “component” variable, since it's the form variable and not the variable name passed to LiveProps.

I hope I've made myself clear :D
Thanks in advance

Originally posted by @akyoscommunication in #2057 (comment)

[smnandre]

Did you try doing what the error suggest ?

   #[LiveProp(fieldName="foo", ....)]
    public Component $component

[akyoscommunication]

There is no errors. Just, the onUpdate function don't trigger