/**
* return all available role for this user
*
* @param User $user
* @return array
*/
public function getRolesFor(User $user)
{
$userRoles = $user->roles()->get();
$roles = Role::where('order', '<=', $this->maxRole()->order);
foreach ($userRoles as $role) {
$roles = $roles->where('name', '!=', $role->name);
}
return $roles->get();
}
