source: app/Models/Role.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Role extends Model
{
    protected $table = "roles";

    protected $fillable = ["name"];

    public function user() {
        return $this->hasMany(User::class);
    }

    public function permission() {
        return $this->belongsToMany(Permission::class, "roles_permissions");
    }
}