You probably don't need the complexity of a :through. But you are
definitely looking at a self-referential. Here's the example from
Rails Recipes:
class Person < ActiveRecord::Base
has_and_belongs_to_many :friends,
:class_name => "Person",
:join_table => "friends_people",
:association_foreign_key => "friend_id",
:foreign_key => "person_id"
end
Don't forget to add a friends_people join table to the database.
Then you do controller stuff like: person1.friends << person2
Ignore that (confusing) blog post you were referred to and go buy
Rails Recipes if you need the rest of the details to make this work.
Recipe 18 will cut and paste to exactly what you want to do.
Maybe get a new forums too.
-david
On Nov 18, 2006, at 5:29 PM, Dave Amos wrote:
Hi there!
I'm working on a little recipe-sharing application, and I want
people to be able to click on a link in a user's profile to add
them as "friends". I imagined it working where once the link was
clicked, the user_id of the friendee and the current_user.id of the
friender would be stored in a database table called friends. I
asked about this on a ruby forum, and most people told me that the
best way to do this was using self-referential has_many :through
associations (see: http://blog.hasmanythrough.com/articles/
2006/04/21/self-referential-through). They also concluded that it
was well out of my league, and I guess I agree. Is there a way to
do it my way, without the associations (except for maybe a simple
users has_many friends sort of thing)?
Thanks, and let me know if you need more information!
Dave
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