Question

I have modified directly a FOSUserForm (with no overriding) to try and assign a default value while building the form, I have added the

array('data'=>'default value') 

such as:

namespace FOS\UserBundle\Form\Type;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

class RegistrationFormType extends AbstractType
{
private $class;

/**
 * @param string $class The User class name
 */
public function __construct($class)
{
    $this->class = $class;
}

public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder
        ->add('username', null, array('data' => 'Default value','label' => 'form.username', 'translation_domain' => 'FOSUserBundle'))
        ->add('email', 'email', array('data' => 'Default value','label' => 'form.email', 'translation_domain' => 'FOSUserBundle'))
        ->add('plainPassword', 'repeated', array(
            'type' => 'password',
            'options' => array('translation_domain' => 'FOSUserBundle'),
            'first_options' => array('label' => 'form.password'),
            'second_options' => array('label' => 'form.password_confirmation'),
            'invalid_message' => 'fos_user.password.mismatch',
        ))
    ;
}

public function setDefaultOptions(OptionsResolverInterface $resolver)
{
    $resolver->setDefaults(array(
        'data_class' => $this->class,
        'intention'  => 'registration',
    ));
}

public function getName()
{
    return 'fos_user_registration';
}

It doesn’t work and I keep having a form validation message “Please enter a username”
what’s wrong?

Answer 1

Have you tried setting the username as a hidden field instead of “null”? Or remove the username from the form completely and set it manually before the entity is persisted in the database. I don’t recommend the second option unless you have performed a check to make sure the username is unique before persisting it to the database.

Edit:

Out of curiousity, why are you modifying a vendor class directly?

Edit 2:

The default validation for the username field should probably not be removed (and if you do, make sure it is still a unique field in the database (http://symfony.com/doc/2.0/reference/constraints/UniqueEntity.html).

If you want to set a default username value, instead of setting the data option in the form, create a custom RegistrationFormHandler that overrides the default createUser method:

<?php

namespace Acme\UserBundle\Form\Handler;

use FOS\UserBundle\Form\Handler\RegistrationFormHandler as BaseHandler;

class RegistrationFormHandler extends BaseHandler
{
    /**
     * @return UserInterface
     */
    protected function createUser()
    {
        $user = $this->userManager->createUser();
        $user->setUsername('customusername');

        return $user;
    }
}

Instructions on overriding this handler can be found here (towards the bottom):
https://github.com/FriendsOfSymfony/FOSUserBundle/blob/master/Resources/doc/overriding_forms.md

It’s pretty simple, should only take a minute to implement. Additionally, creating the custom formhandler will also prevent any changes you’ve made in the vendor classes from being lost when you update your vendors via composer.

Edit 3:

DependencyInjection\EtienneUserExtension.php:

<?php

namespace Etienne\UserBundle\DependencyInjection;

use Symfony\Component\DependencyInjection\ContainerBuilder;

//if using xml
use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;

//if using yaml
use Symfony\Component\DependencyInjection\Loader\YamlFileLoader;

use Symfony\Component\HttpKernel\DependencyInjection\Extension;
use Symfony\Component\Config\FileLocator;

class EtienneUserExtension extends Extension
{
    public function load(array $configs, ContainerBuilder $container)
    {
        //if using XML
        $loader = new XmlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
        $loader->load('services.xml');

        //or if using yaml services
        $loader = new YamlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
        $loader->load('services.yml');
    }

    public function getAlias()
    {
        return 'etienne_user';
    }
}

services.xml

<?xml version="1.0" ?>

<container xmlns="http://symfony.com/schema/dic/services"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">


<services>
    <service id="acme_user.form.handler.registration" class="Acme\UserBundle\Form\RegHandler" scope="request" public="false">
        <argument type="service" id="fos_user.registration.form" />
        <argument type="service" id="request" />
        <argument type="service" id="fos_user.user_manager" />
        <argument type="service" id="fos_user.mailer" />
        <argument type="service" id="fos_user.util.token_generator" />
    </service>
</services>

</container>