awurth / silex-user

     *

     * @return bool true if role was added, false if user already had the role

     */

    public function addRole($username, $role)

    {

        $user = $this->findUserByUsernameOrThrowException($username);

        if ($user->hasRole($role)) {

            return false;

        }

        $user->addRole($role);

        $this->userManager->updateUser($user);

        return true;

    }

    /**

     * Removes role from the given user.

     *

     * @return bool true if role was removed, false if user didn't have the role

     */

    public function removeRole($username, $role)

    {

        $user = $this->findUserByUsernameOrThrowException($username);

        if (!$user->hasRole($role)) {

            return false;

        }

        $user->removeRole($role);

        $this->userManager->updateUser($user);

        return true;

    }

    /**

     * Finds a user by his username and throws an exception if we can't find it.