Pass custom parameters to custom ValidationConstraint in Symfony2

Question

I\'m creating a form in Symfony2. The form only contains one book field which allows the user to choose between a list of Books entities. I need to c

Answer 1

Thank you @JasonRoman, Your solution worked perfectly for me in Symfony 3.4.

I had an error in my Validator when I used :

 $author = $this->constraint->getAuthor();

But it worked when I used this instead :

 $author = $constraint->getAuthor();