Symfony2: Getting the list of user roles in FormBuilder

Question

I\'m making a form for user creation, and I want to give one or several roles to a user when I create him.

How do I get the list of roles defined in security.y

Answer 1

You can make a service for this and inject the "security.role_hierarchy.roles" parameter.

Service definition:

acme.user.roles:
   class: Acme\DemoBundle\Model\RolesHelper
   arguments: ['%security.role_hierarchy.roles%']

Service Class:

class RolesHelper
{
    private $rolesHierarchy;

    private $roles;

    public function __construct($rolesHierarchy)
    {
        $this->rolesHierarchy = $rolesHierarchy;
    }

    public function getRoles()
    {
        if($this->roles) {
            return $this->roles;
        }

        $roles = array();
        array_walk_recursive($this->rolesHierarchy, function($val) use (&$roles) {
            $roles[] = $val;
        });

        return $this->roles = array_unique($roles);
    }
}

You can get the roles in your controller like this:

$roles = $this->get('acme.user.roles')->getRoles();

Answer 2

You can get a list of reachable roles from this method:

Symfony\Component\Security\Core\Role\RoleHierarchy::getReachableRoles(array $roles)

It seems to return all roles reachable from roles in array $roles parameter. It's an internal service of Symfony, whose ID is security.role_hierarchy and is not public (you must explicitely pass it as parameters, it's not acessible from Service Container).

Answer 3

Here's what I've done:

FormType:

use FTW\GuildBundle\Entity\User;

class UserType extends AbstractType
{

public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder
        ->add('username')
        ->add('email')
        ->add('enabled', null, array('required' => false))
        ->add('roles', 'choice', array(
        'choices' => User::getRoleNames(),
        'required' => false,'label'=>'Roles','multiple'=>true
    ))
        ->add('disableNotificationEmails', null, array('required' => false));
}

In the entity:

use Symfony\Component\Yaml\Parser; ...

static function getRoleNames()
{
    $pathToSecurity = __DIR__ . '/../../../..' . '/app/config/security.yml';
    $yaml = new Parser();
    $rolesArray = $yaml->parse(file_get_contents($pathToSecurity));
    $arrayKeys = array();
    foreach ($rolesArray['security']['role_hierarchy'] as $key => $value)
    {
        //never allow assigning super admin
        if ($key != 'ROLE_SUPER_ADMIN')
            $arrayKeys[$key] = User::convertRoleToLabel($key);
        //skip values that are arrays --- roles with multiple sub-roles
        if (!is_array($value))
            if ($value != 'ROLE_SUPER_ADMIN')
                $arrayKeys[$value] = User::convertRoleToLabel($value);
    }
    //sort for display purposes
    asort($arrayKeys);
    return $arrayKeys;
}

static private function convertRoleToLabel($role)
{
    $roleDisplay = str_replace('ROLE_', '', $role);
    $roleDisplay = str_replace('_', ' ', $roleDisplay);
    return ucwords(strtolower($roleDisplay));
}

Please do provide feedback... I've used some suggestions from other answers, but I still feel like this is not the best solution!

Answer 4

//FormType
use Symfony\Component\Yaml\Parser;

function getRolesNames(){
        $pathToSecurity = /var/mydirectory/app/config/security.yml
        $yaml = new Parser();
        $rolesArray = $yaml->parse(file_get_contents($pathToSecurity ));

        return $rolesArray['security']['role_hierarchy']['ROLE_USER'];
}

This is so far the best way i found to get or set what i want from config files.

Bon courage