Symfony 3 createForm with construct parameters

Question

Since Symfony 2.8, you can only pass the FQCN into the controller createForm method. So, my question is, how do I pass construct parameters into the form class construct when I create the form in the controller?

< Symfony 2.8 I could do (MyController.php):

$this->createForm(new MyForm($arg1, $arg2));

Symfony 2.8+ I can only do (MyController.php):

$this->createForm(MyForm::class);

So how can I pass in my construct arguments? These arguments are provided in the controller actions so I can't use the "Forms as services" method...

Answer 1

simply:

$this->createForm(MyForm::class, $entity, ['arg1' => $arg1, 'arg2' => $arg2]);

which is actually how it should have been done prior to 2.8 anyway.

edit

based upon your comment, you need to set up the default values in the class type itself:

public function configureOptions( OptionsResolver $resolver ) {
    $resolver->setDefaults( [
      'arg1' => null,
      'arg2' => null,
    ] );
}