Question

Here are my models:

class User < ActiveRecord::Base
  ...
  belongs_to    :picture,               :foreign_key  => 'picture_id', 
                                        :class_name   => 'UploadedFile', 
                                        :dependent    => :destroy

  has_many      :enrolled_groups,      :through      => :interests
  ...
end


class Group < ActiveRecord::Base

  has_many :enrolled_users,       :through      => :interests,
                                  :source       => :user
end

I want to get an XML feed for my Groups with the enrolled users and their picture information.

The following line works fine (just with the enrolled users):

render :xml => @group.to_xml(:include => [:enrolled_users] )

How can I also include the picture info in the feed? I tried a bunch of things but can’t figure it out… any idea?

Answer 1

I couldn’t get it to work with the other proposed solutions. The way I ended up doing it was as follow:

In the controller:

render :xml => @group.to_xml(:include => {:enrolled_users => {:methods => :picture_url}})

In the model:

def picture_url
    HOST+picture.public_filename(:avatar)
end