collection_select with HABTM relationship

rubyonrails-talk
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