Comments on: A Simple Twitter App with Ruby on Rails – Building Friendships

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By: Daniel

Daniel — Sat, 04 Sep 2010 22:43:51 +0000

I’ve worked through this tutorial and got it all working but I want to add a feature and i can’t work out how to do it:

I’m able to get a list of the people a person is following. But I can’t work out how to get a list of the people following a person…

that only shows the people being follow by a user…

I have looked at the SQL table and its storing the links with the user_id and the friend_id… so the above code looks for all records where the @user.id is = to user_id in the table…

I need to be able to access all the records where friend_id = @user.id to get a list of people following the user…

By: Benjo

Benjo — Wed, 01 Sep 2010 05:22:09 +0000

No it is not redundant. because each row is unique. (Row #1) has user2 as user1′s follower. (Row #2) If they follow each other : user1 as user2′s follower. Easy and simple. (think of difference in facebook and twitter.. in facebook u have to confirm friendship, in twitter u dont)

By: Buddy Beers

Buddy Beers — Wed, 28 Jul 2010 14:50:08 +0000

The problem I see with this method is that friendships are reciprocal. So, if user 1 is listed as friends with user 2 then user 2 must also be friends with user 1. Creating another database entry for this seems redundant. How would you handle this?

By: vineeth kumar.s

vineeth kumar.s — Mon, 26 Apr 2010 11:14:05 +0000

So, what exactly do we relate the user model to?? Well, first we need to specify that the friendship model belongs to a friend (which is actually a user!). You can do this by adding some more lines to the user model:-

class Friendship “User”
end

i think u have misplaced user model instead friendship model ..