How to implement authentication in Phalcon?

@herminia_bruen 

To implement authentication in Phalcon, you can follow these steps:

1. Create a new controller to handle authentication. This controller will contain the methods for logging in and logging out.
2. Create a view for the login page. This page will contain a form with fields for username and password.
3. Create a model for the user. This model will contain the logic for checking if a user exists and verifying their password.
4. Implement the login functionality in the authentication controller. This will involve checking the user’s credentials and setting a session variable to indicate that the user is logged in.
5. Implement the logout functionality in the authentication controller. This will involve destroying the session variable that indicates that the user is logged in.
6. Add authentication filters to the routes that require authentication. This will ensure that only logged-in users can access certain pages.
7. Implement authorization logic in your controllers and views. This will involve checking if the user has the necessary permissions to perform certain actions or access certain pages.

Overall, the process of implementing authentication in Phalcon will involve creating a controller and view for the login page, a model for the user, and implementing the login and logout functionality. You will also need to add authentication filters to the routes that require authentication and implement authorization logic in your controllers and views.