what the diffrence between policy and gates ?

-Policies are classes that define the authorization logic for a particular model or resource in your application.

-Gates are more generic and can be used to define custom authorization checks that are not necessarily tied to specific models.

Gate

Closure-based routes.

Simple role system.

    Gate::define('admin', function (User $user) {
        return $user->is_admin;
    });

If you are not using it with a model, select Gate.

Policy

Controller. Use with Eloquent models.