Symfony 3, ManyToOne relation in form - php

Question

I have a few Entities and I try to setup relations between users and permissions. I want to have possibility to assign group of permissions to user, so I created entity User, GroupAssociationsUser, Permissions. I though that best way is to create relation ManyToOne in GroupAssociationsUser to Users and to Permissions. Bellow you can see code of GroupAssociationsUser entity:
/**
* #ORM\ManyToOne(targetEntity="Permissions", inversedBy="group_assoc_user")
* #ORM\JoinColumn(name="group_permissions", referencedColumnName="id", nullable=FALSE)
*/
private $group_permissions;
/**
* #ORM\ManyToOne(targetEntity="User", inversedBy="group_assoc_user")
* #ORM\JoinColumn(name="user_assoc", referencedColumnName="id", nullable=FALSE)
*/
private $user_assoc;
Then I also created relation in User entity:
/**
* #ORM\OneToMany(targetEntity="GroupAssociationsUser", mappedBy="user_assoc")
*/
private $group_assoc_user;
public function __construct()
{
$this->group_assoc_user = new ArrayCollection();
}
Finally in Permission entity:
/**
* #ORM\OneToMany(targetEntity="GroupAssociationsUser", mappedBy="group_permissions")
*/
private $group_assoc_user;
public function __construct()
{
$this->group_assoc_user = new ArrayCollection();
}
So basically I want to have select list on my user edit page and I want to have possibility to select permission group to assign to user.
So I created form with:
->add('group_assoc_user', EntityType::class, array(
'class' => 'AppBundle:Permissions',
'choice_label'=> 'group_name',
'placeholder' => 'no rights',
))
And the problem is that no mater what I do, I have got only list of exiting permissions or if I change code to :
->add('group_assoc_user', EntityType::class, array(
'class' => 'AppBundle:GroupAssociationsUser',
'choice_label'=> 'Permissions.group_name',
'placeholder' => 'no rights',
));
I have got listed only assigned permission without not assigned. What am I doing wrong?
Even if I got all permissions names how I can force doctrine to mark already assigned field?

Answer 1

Try to set Multiple to true.
http://symfony.com/doc/current/reference/forms/types/entity.html#multiple
->add('group_assoc_user', EntityType::class, array(
'class' => 'AppBundle:GroupAssociationsUser',
'choice_label'=> 'Permissions.group_name',
'placeholder' => 'no rights',
'multiple' => true,
));
You may also like the
'expanded' => true
option