Collection_select with HABTM relationship

Rails
1

I have a collection set…

<%= collection_select(:bet, :opponent_id, Friendship.find(:all,
:conditions => [ “user1_id = ?”, current_user ], :order => “id”) , :id,
:id) %>

…wors fine. But I want to return the users first+last name based on the
user -> frienship relationship.

I tried to do something like this…

<%= collection_select(:bet, :opponent_id, Friendship.find(:all,
:conditions => [ “user1_id = ?”, current_user ], :order => “id”) , :id,
@bet.user.first_name) %>

It actually returns the correct First name, but throws an error, because
it thinks the actual name is an undefined method.

??

2

Let’s see the relevant bits of your User and Friendship models. If you
define the relationship correctly, AR should give you e.g., a .friends
method on your User instances, which should return a collection of User
objects. You should be able to do something like:

collection_select(:bet, :opponent_id, current_user.friends, :id,
:full_name)

-Roy