Question

Users details are held in database table called user where I have fields username and password among others. Now, I need to give users additional option to login using facebook and twitter.
I know how to handle these authentications but what I can’t think is –

How to identify which FB user account relates to which local user account? How do I do this?

I’m not looking for code but the process. The process in my mind is somewhat as below –
User logs in using username and password of my website. then they can add FB or Twitter as external authentication and when they do it I ask them to login to FB. On successful FB login I save some unique fb id (i don’t know which as haven’t checked yet) in the users table. Next time they can just login using FB as I’d be able to identify which local record they belong to. Is this how you would do this?

What would you suggest? Thanks for your inputs in advance.

PS – I’ll be adding multiple networks (like linkedin and others) but at the moment fb and twitter only.

Answer 1

One way you can do this is :
@Registration

1. Allow the user to register with Facebook, Twitter
2. Once the process has completed, redirect the user to create a username on your site
3. Using the email obtained from Facebook, Twitter, and username from local form, insert all this information into a db table.
4. This will allow referencing between FB, TW, and local usernames