Note: This logic works for ManyToMany relationship, but not for ManyToOne
I tested the way to delete all related roles for specific use (ManyToMany) and it worked. What you need is to define a function in your UserEntity as
/**
* Remove all user Roles
*/
public function remvoveAllUserRole()
{
$this->userRole->clear();
}
Then in your controller or anywhere else(if you need) you can call the function as below
$specificUser = $em->getRepository('MyBundle:Users')->findOneBy(array('username' => 'test user'));
if (!empty($specificUser)) {
$specificUser->removeAllUserRole();
$em->flush();
}
Then it will delete all related roles for the test user and we don't need to use the for loop and remove them one by one