Building authentication in Node.JS
Learning about building a full authentication is definitely a fun ride. It covers many edge cases that validates every aspect of a creating a secure access to the system.
At the most abstract level, Index.js is the file that runs the entire program when the app starts loading:
Cookie-session is the npm library that is being used to create session and user authentication. I also added authentication route so that the links to access signup and login pages can be easily available.
Routes > auth.js:
In this file, we have our authentication routes for signing up a new user or logging in an existing user.
I have also imported validator functions used as a checkpoint to inspect whether the user’s profile has been created, already exists, follow our username/password guidelines, or if the user is already logged in, and errors that initiate if any of the validation points fails.
Here is the snapshot of the validator functions:
Express validator is a middleware that is used to evaluate and validate username, password, and generate errors if they arise.
We also have views that generate HTML templates and helper method that shows errors:
The end result, will look something like this:
If you signup with pre-existing record, after clicking a submit button it will generate error message that the email is in use, or if the password and password confirmation does not match, it will say so.
This is a work in progress app, and I will update this blog to reflect the latest features.
Link to repo