Symfony3中的__construct（）和service.yml

Question

I have some issues with my code, it has separate form, controller and service. Where is the issue here?

form: https://pastebin.com/ERU6hChv controller: https://pastebin.com/FMzJ493v service:

# app/config/services.yml
services:
    app.form.type.przydzial:
        class: AppBundle\Form\PrzydzialType
        arguments: ['@session']
        tags:
            - { name: form.type }

unfortunately i have a warrning:

"Warning: Missing argument 1 for AppBundle\Form\PrzydzialType::__construct(), called in G:\Xampp\htdocs\projects\godziny_inz\vendor\symfony\symfony\src\Symfony\Component\Form\FormRegistry.php on line 85 and defined"

Stack Trace:

"in src\AppBundle\Form\PrzydzialType.php at line 64"

return 'appbundle_przydzial';
}

public function __construct($session)
{
$this->session = $session; <----------64 line

EDIT:

if i change this line: 
$form = $this->createForm('AppBundle\Form\PrzydzialType', $przydzial);
to 
$form = $this->createForm('app.form.type.przydzial', $przydzial);

I have different warning:

Could not load type "app.form.type.przydzial"

Stack Trace:

in vendor\\symfony\\symfony\\src\\Symfony\\Component\\Form\\FormRegistry.php at line 87

if (class_exists($name) && in_array('Symfony\Component\Form\FormTypeInterface', class_implements($name))) {
$type = new $name();
} else {
throw new InvalidArgumentException(sprintf('Could not load type "%s"', $name)); <---line 87
}
}

Answer 1

It looks like your Form Type is created with new in the FormRegistry instead of using your service. You can find the exact location where this happens in the FormRegistry . Since you created a service and tagged it as form.type I can only assume the problem is somewhere inside the AppBundle\\Form\\PrzydzialType class.

Most likely you either forgot to extend Symfony\\Component\\Form\\AbstractType or accidentally extended from a wrong one (check your use statements).