Laravel-admin: relation many-to-many does't work - laravel

Question

I use laravel-admin (https://laravel-admin.org) in my laravel project. I wish to show on User admin panel role names of user. But I get error message:
SQLSTATE[42703]: Undefined column: 7 ERROR: column users_roles.role___id does not exist LINE 1: ...les" inner join "users_roles" on "roles"."__id" = "users_rol... ^ (SQL: select "roles".*, "users_roles"."user___id" as "pivot_user___id", "users_roles"."role___id" as "pivot_role___id" from "roles" inner join "users_roles" on "roles"."__id" = "users_roles"."role___id" where "users_roles"."user___id" in (1, 2, 3))
Here are my classes and controller:
User.php:
namespace App\Models;
/**
* Class User
* #package App\Models
*
* #property integer $__id
* #property string $email
* #property string $password
* #property string|null $firstname
* #property string|null $lastname
* #property \DateTime|null $visited_at
* #property string|null $phone
* #property string|null $avatar
* #property string|null $remember_token
* #property \DateTime $created_at
* #property \DateTime $updated_at
*/
class User extends Authenticatable
{
use Notifiable;
protected $primaryKey = '__id';
public function roles() :BelongsToMany
{
return $this->belongsToMany(Role::class,'users_roles');
}
}
Role.php:
<?php
namespace App\Models;
/**
* Class Role
* #package App\Models
*
* #property integer $__id
* #property string $key
* #property string $name
*/
class Role extends Model
{
protected $primaryKey = '__id';
public function users(): BelongsToMany
{
return $this->belongsToMany(User::class,'users_roles');
}
}
UserController.php:
<?php
namespace App\Admin\Controllers;
class UserController extends AdminController
{
protected $title = 'User';
protected function grid()
{
$grid = new Grid(new User());
$grid->column('__id', __(' id'));
$grid->column('email', __('Email'));
$grid->column('password', __('Password'));
$grid->column('firstname', __('Firstname'));
$grid->column('lastname', __('Lastname'));
$grid->roles()->display(function($roles) {
$roles = array_map(function ($role) {
return "<span class='label label-success'>{$role['name']}</span>";
}, $roles);
return join(' ', $roles);
});
.......
.........
}
Pivot table users_roles:
create table if not exists users_roles
(
__user_id bigint not null
constraint users_roles___user_id_foreign
references users,
__role_id bigint not null
constraint users_roles___role_id_foreign
references roles,
become_at timestamp(0) not null,
left_at timestamp(0)
);
I have noticed that name of column __role_id the pivot table is transformed in the query as role___id (as error message tells me: "ERROR: column users_roles.role___id"). How to solve this problem?

Answer 1

I had to make some correction:
public function roles() :BelongsToMany
{
return $this->belongsToMany(Role::class,'users_roles',
'__user_id','__role_id');
}
and error message disappeared.