Protected Routes

There are usually parts of your application that you want to be available to only logged in users or guest users. That's where protected routes come in. Protected routes are setup to allow users with a certain authentication status to access them.

The user method

The user() method is a way to check if a user is logged in. It returns the currently logged in user if an authenticated user is found and null if a user is not logged in.

This works for both session and token based authentication. In case of token based authentication, Leaf Auth will also check if the token is valid. If it is, the user is returned, if not, null is returned. You can get the reason for the authentication failure by calling the errors() method.

$user = auth()->user();

if ($user) {
  // user is logged in
} else {
  // user is not logged in
  $errors = auth()->errors();
}

Using this method, you can easily protect your routes by checking if a user is logged in. If a user is not logged in, you can redirect them to the login page or return a 401 error. Here's an example:

app()->get('/protected', function () {
  $user = auth()->user();

  if ($user) {
    // user is logged in
  } else {
    // user is not logged in
    response()->redirect('/login');
  }
});

For API routes, you can return a 401 error if a user is not logged in.

app()->get('/protected', function () {
  $user = auth()->user();

  if ($user) {
    // user is logged in
  } else {
    // user is not logged in
    response()->json([
      'error' => 'Unauthorized',
      'data' => auth()->errors(),
    ], 401);
  }
});

The id method

The id() method lets you get the ID of the user who is currently logged in. This is helpful when you need to work with the user's ID in your app. If no user is logged in, the method returns null instead.

app()->get('/protected', function () {
  $id = auth()->id();

  if ($id) {
    // user is logged in
  } else {
    // user is not logged in
    response()->redirect('/login');
  }
});

Using Middleware

Leaf Auth provides middleware to keep guest users out and logged in users in. This is a more flexible way to protect your routes and allows you to define more complex authentication logic. The auth:required middleware checks if a user is logged in and redirects to /auth/login if a user is not logged in.

app()->get('/protected', ['middleware' => 'auth.required', function () {
  // this route is protected
}]);

// or on a route group
app()->group('/protected', ['middleware' => 'auth.required', function () {
  app()->get('/route', function () {
    // this route is protected
  });
}]);

The route or group of routes will only be accessible to logged in users, so you don't need to check if a user is logged in inside the route handler.

Protected Guest Routes

Just like the auth.required middleware, Leaf Auth provides a auth.guest middleware to protect routes that should only be accessible to guest users. This is useful for routes like the login and register routes.

app()->get('/login', ['middleware' => 'auth.guest', function () {
  // this route is only accessible to guest users
}]);

If a logged in user tries to access a route protected by the auth.guest middleware, they will be redirected to the /dashboard route by default.

Customizing auth middleware

Your application may need you to return different responses for the auth.required and auth.guest middleware. You can customize the middleware by defining your own function that should be called when the middleware fails.

auth()->middleware('auth.required', function () {
  response()->exit('You need to be logged in to access this route');
});

auth()->middleware('auth.guest', function () {
  response()->exit('You are already logged in');
});

After defining the custom middleware, you can use it in your routes.

app()->get('/protected', ['middleware' => 'auth.required', function () {
  // this route is protected
}]);

app()->get('/login', ['middleware' => 'auth.guest', function () {
  // this route is only accessible to guest users
}]);

You only need to define the custom middleware if the default behavior of the auth.required and auth.guest middleware does not meet your requirements.

Session Guards DEPRECATED

The previous version of Leaf Auth had a feature called session guards. This feature has been deprecated in the latest version of Leaf Auth. If you were using session guards in your app, you can switch to the new middleware system to protect your routes.

The middleware system is more flexible and allows you to define more complex authentication logic using the middleware callback functions.

You can also use the middleware system to protect routes for both logged in and guest users, which is essentially what session guards were used for.