Laravel Serialization: Serializing Models & Collections

$user = App\User::with('roles')->first();

return $user->toArray();

$users = App\User::all();

return $users->toArray();

$user = App\User::find(1);

return $user->toJson();

return $user->toJson(JSON_PRETTY_PRINT);

$user = App\User::find(1);

return (string) $user;

Route::get('users', function () {
    return App\User::all();
});