[Forms] setDefault() method not reflected in HTML value attribute

[s-ohnishi]

When setting a default value using setDefault() method in my forms class, the value is not being rendered as a value attribute in the generated HTML form elements.

public function initialize($entity = null, array $options = []): void
    {
        $elm = new Element\Hidden('id');
        $elm->setFilters(['absint'])
            ->addValidator(
                new Validator\PresenceOf(['message'=>'不正なアクセスです'])
            )
            ->setDefault(0);
        $this->add($elm);`

In the controller I've written it like this.

    $newTicket = new Orders(['tickets_id'=>$tid]);
    $form = new OrderForm($newTicket);

And then in volt, I write it like this:

{{ form.render('id') }} 

The resulting HTML was this:

<input type="hidden" id="id" name="id" />

If I change the code in volt to {{ form.render('id', ['value':1]) }}, it becomes like this.

<input type="hidden" id="id" name="id" value="1" />

This means that if you specify value as an attribute to render() when rendering, it will be reflected.
This behavior makes sense because it works as described in AbstractElement.zep.

So why isn't the value set with setDefault() reflected?
Am I using it wrong?

PHP 8.4.5
Phalcon 5.9.2

[raicabogdan]

Your issue is that you are passing an entity and that overrides the default form values. You see, if you do not pass any data to the form, it should render the setDefault() value.

Try to set your id in your entity and that should work.

[s-ohnishi]

Thank you for your reply.
I was using $entity in the Form, so I was passing the entity.
As you pointed out, it worked if I specified the ID when creating the instance.
However, since it is a newly created instance (= not persisted), it feels strange to specify an ID, so I will solve the problem by not using $entity and not passing the entity when creating a Form instance.

[raicabogdan]

I agree, you don't normally pass the db row id to the form unless you maybe edit it. So you have to just rework your form to not add the id since you don't need the id in that section. You just have to get the form data and then create a new Order object and persist it. The id is not necessary.

[s-ohnishi]

I use this form not only to create new orders but also to modify them, so I don't think you can get rid of the ID.
Your comment was very helpful. Thank you very much.