The buildView() Method

Not sure why but adding the `javascripts` block to the edit or new template make the debug bar disappear into thin air

Console shows the following error:

```js
Uncaught ReferenceError: Sfjs is not defined
at new:89:44359
at new:89:44392
```

Hey danresmejia

Is it possible you forgot to call the parent? {{ parent() }}

Cheers!

On the Edit page I am getting this error: Can only be used with user objects.

\Form\DataTransformer\FormToUserTransformer.php (line 32)
`if (!$value instanceof User) {

        throw new \LogicException('Can only be used with user objects.');        

}`

Hey Farry7,

Check your FormToUserTransformer, you wether apply that data transformer to a wrong entity, or it does not allow null probably. To know for sure, try to debug the $value, you can add "dd($value);" before throwing the exception - that will give you some hint about the value of that variable. Or maybe you just forgot to use the correct namespace for your User entity in FormToUserTransformer :)

I hope this helps!

Cheers!

Hi,

when i try to insert any parameter (for exemple i need RouterInterface $router) in the Article Constructor (my Article is Gruppi), i get the message

Too few arguments to function App\Form\Form\Gruppi\GruppiType::__construct(), 0 passed in C:\Users\Giacomo\Documents\GitHub\fgcweb\vendor\symfony\form\FormRegistry.php on line 91 and exactly 2 expected

I think this come from the controller's line:
$form = $this->createForm(GruppiType::class, $gr);

Now, there is a way to use RouterInterface from inside Gruppi without get that error, so i can set:

'data-autocomplete-url' => $this->router->generate('get_group_fields');

without the need to create a new form and use it in Gruppi's buildForm?

If i instance
$this->router = RouterInterface::class; i
inside the constructor, the error is solved but i get:

Call to a member function generate() on string
in
$attr['data-autocomplete-url'] = $this->router->generate('get_group_fields')

Reading docs i did:

`

   $route = new Route('/gr/utility/gruppi', ['_controller' => GruppiController::class]);
    $routes = new RouteCollection();
    $routes->add('get_group_fields', $route);
    $context = new RequestContext('/');
    $generator = new UrlGenerator($routes, $context);
    $url = $generator->generate('get_group_fields');

`

but it's very verbose and the output is:
data-autocomplete-url="//gr/utility/gruppi"

Any suggestion for a shorted and correct solution?

Thanks a lot!

Hey Giacomo V.

Which version of Symfony are you using? If you are using auto-wire and auto-configure features, then you should be able to just type-hint your services in the Form class and Symfony should do the rest (https://symfony.com/doc/cur... ). If not, you will have to define such Form class as a service

Cheers!

Hello there ,
This error occurs when saving the form.

Error: <blockquote>The choices "single" do not exist in the choice list.</blockquote>

I don't understand why I can't define the choices in the buildView method
Where can I do it? So that on the parent form I don't have to do it. Choices will be generated based on an option in the parent form called "entity_name"

namespace App\Form\Type;
use App\Service\Theme;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\Form\FormView;
use Symfony\Component\OptionsResolver\OptionsResolver;
class TemplateType extends AbstractType
{
  private $theme;
  public function __construct(Theme $theme)
  {
    $this->theme = $theme;
  }
  public function configureOptions(OptionsResolver $resolver): void
  {
    $resolver->setDefaults([
      'expanded'         => true,
      'multiple'         => false,
      'required'         => true,
      'label'            => false,
      'entity_name'      => '',
      'default_template' => ''
    ]);
  }
  public function buildView(FormView $view, FormInterface $form, array $options): void
  {
    $entityName = $options[ 'entity_name' ];
    $view->vars = array_replace($view->vars, [
      'entity_name'      => $entityName,
      'default_template' => $options[ 'default_template' ],
      'choices'          => $this->theme->templatesByEntity($entityName),
    ]);
  }
  public function getParent(): string
  {
    return ChoiceType::class;
  }
}

Hey Jose carlos C.

Give it a try defining the choices option at the buildForm method

Cheers!

How? I've tried a thousand ways in the buildForm and I couldn't.

Ohh I see now why it's difficult, you are extending from ChoiceType and no adding any new fields. Hmm, what you are doing seems OK but since you are relying on the "field variables" I think you need to create a ChoiceView item per each option and put them onto an array. Check the "choices" definition here:https://symfony.com/doc/current/reference/forms/types/choice.html#field-variables
I haven't done that before so I might be wrong

Another thing you can try is to define the "choices" inside configureOptions() method as you did to: expanded, multiple, etc

In configureOptions this is not possible, because the list depends on a newly defined option called 'entity_name'.
This is the parent form field:

.....
$builder->add('template', TemplateType::class, array(
      'entity_name'      => 'blog',
      'default_template' => 'single.html.twig'
    ));

Have you tried adding the choices in there?

$builder->add('template', TemplateType::class, array(
      'entity_name'      => 'blog',
      'default_template' => 'single.html.twig',
      'choices' => $arrayWithYourChoices
    ));

I want to do it without having to add it to the parent form, as I said before.

Yeea, it's kind of the diffcult what you are trying to achieve. Did you try to create your own ChoiceView list and use it in the buildView() method? If that doesn't work I think the answer to your problem may be managed via FormEvents https://symfony.com/doc/current/form/events.html

BTW, when I am trying to put in twig this
`

{{ form_row(articleForm.author, {
    attr: {class: 'the-author'}
}) }}

`
I am getting broken autocomplete. I mean it won't work. Still I have correctly appended the needed class...

Hey MASQUERADE promotion!

Do you get any JavaScript errors? And when you inspect your HTML, do you see the class being printed on your element? Finally, in our code, we added the class js-user-autocomplete - but it looks like you're adding a class called the-author - is that in purpose?

Cheers!

thanks

yeah, you are correct.