Symfony, minMessage from Constraints not displaying - symfony

Question

I'm new to Symfony and just making my first Project with the 3.4 version.
I have a problem when using Constraints on my form, I'm trying to make a field having some Length constraints, but as I test it with a short value that shouldn't be accepted, the form displays a default message in a speech bubble instead of the one I put in minMessage, and instead of displaying a message for maxLength, it just don't let me put more thant 20 characters in the field instead of displaying a message if there is more than 20. I'm not sure this is how it should work (???) and if it is can I manage error messages with another technic? I'm just putting constraints on a single field until I resolved this issue that's why the others one don't have any.
Here's the Controller Code :
<?php
namespace AppBundle\Controller;
use AppBundle\Form\UserType;
use AppBundle\Entity\User;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\Routing\Annotation\Route;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\Request;
/**
* Class UserController
* #package AppBundle\Controller
* #Route("/user")
*/
class UserController extends Controller
{
/**
* #return \Symfony\Component\HttpFoundation\Response
* #Route("/add", name="add_user")
*/
public function addAction(Request $request)
{
$user = new User();
$form = $this->createForm(UserType::class, $user);
$form->handleRequest($request);
$em = $this->getDoctrine()->getManager();
if($form->isSubmitted() && $form->isValid()){
$user->setPwd(md5($user->getPwd()));
$em->persist($user);
$em->flush();
return $this->render('#App/User/show.html.twig', array(
'user'=>$user
));
}
return $this->render('#App/User/add.html.twig', array(
'form'=>$form->createView()
));
}
}
UserType code:
<?php
namespace AppBundle\Form;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Symfony\Component\Form\Extension\Core\Type\SubmitType;
use Symfony\Component\Form\Extension\Core\Type\PasswordType;
class UserType extends AbstractType
{
/**
* {#inheritdoc}
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('pseudo')
->add('nom')
->add('prenom')
->add('enseignant')
->add('pwd', PasswordType::class)
->add('confirm_pwd', PasswordType::class);
}
/**
* {#inheritdoc}
*/
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'AppBundle\Entity\User'
));
}
/**
* {#inheritdoc}
*/
public function getBlockPrefix()
{
return 'appbundle_user';
}
}
User code (I'll just pute the code where my constraints are):
<?php
namespace AppBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
/**
* User
*
* #ORM\Table(name="user")
* #ORM\Entity(repositoryClass="AppBundle\Repository\UserRepository")
*/
class User
{
/**
* #var string
*
* #ORM\Column(name="pseudo", type="string", length=100, unique=true)
* #Assert\Length(
* min = 8,
* max = 20,
* minMessage = "Your first name must be at least {{ limit }} characters long",
* maxMessage = "Your first name cannot be longer than {{ limit }} characters"
* )
*/
private $pseudo;
}
And the twig page that I render:
{% extends 'base.html.twig' %}
{% block body %}
<h1 class="display-4">Formulaire d'inscription</h1>
{{ form_start(form) }}
{{ form_row(form.pseudo, {'label': 'Pseudo', 'attr':
{'placeholder': 'Pseudonyme ...'}}) }}
{{ form_row(form.nom, {'label': 'Nom', 'attr':
{'placeholder': 'Nom ...'}}) }}
{{ form_row(form.prenom, {'label': 'Prenom', 'attr':
{'placeholder': 'Prenom ...'}}) }}
{{ form_row(form.enseignant, {'label': 'Enseignant'}) }}
{{ form_row(form.pwd, {'label': 'Mot De Passe', 'attr':
{'placeholder': 'Mot De Passe'}}) }}
{{ form_row(form.confirm_pwd, {'label': 'Confirmation Mot De Passe', 'attr':
{'placeholder': 'Mot De Passe'}}) }}
<button type="submit" class="btn btn-success">Inscription </button>
{{ form_end(form) }}
{% endblock %}
Do you know what should I do to make it work?
I am sorry if my english is bad, and tell me if you need more or less code!
Have a nice day and thank you !
PS: I'm a real beginner with Symfony so be nice pls :)
PSbis: I already checked the documentation and I made everything that should have been made, but I could have missed something (even if I checked multiple times)
Edit: I added EqualTo and Unique constraints on other fields, and both error messages are displaying, so this is comming from the Length constraint and I really don't know why

Answer 1

You're forgetting to add form_errors. Check this out.