many-to-many.php

users
    id - integer
    name - string

roles
    id - integer
    name - string

role_user
    user_id - integer
    role_id - integer


class User extends Model
{
    public function roles(): BelongsToMany
    {
        return $this->belongsToMany(Role::class, 'role_user', 'user_id', 'role_id');
    }
}


class Role extends Model
{
    public function users(): BelongsToMany
    {
        return $this->belongsToMany(User::class, 'role_user', 'role_id', 'user_id');
    }
}