JAD
Validation
Validation is supported by default using the Symfony validation library.
Simplest way to validate your fields is to use assertion annotations.
Examples
Assert that $firstName is not empty:
use Symfony\Component\Validator\Constraints as Assert;
...
/**
* @ORM\Column(name="FirstName", type="string", length=40)
* @Assert\NotBlank()
*/
protected $firstName;
Assert $email is not empty:
/**
* @ORM\Column(name="email", type="string", length=150)
* @Assert\Email(message="Not valid email")
*/
protected $email;
Read more about constraints: https://symfony.com/doc/current/validation.html#constraints