belongs_to with multiple models

Question

Hi there! I am a Rails noob and have a question. I have a feed aggregator that is organized by this general concept:

Feed Category (books, electronics, etc) Feed Site Section (home page, books page, etc) Feed (the feed itself) Feed Entry

So:

class Category < ActiveRecord::Base
  has_many :feeds
  has_many :feed_entries, :through => :feeds, :limit => 5
  validates_presence_of :name
  attr_accessible :name, :id
end

class Section < ActiveRecord::Base
  has_many :feeds
  has_many :feed_entries, :through => :feeds, :limit => 5
  attr_accessible :name, :id
end

class Feed < ActiveRecord::Base
  belongs_to :categories
  belongs_to :sections
  has_many :feed_entries
  validates_presence_of :name, :feed_url
  attr_accessible :name, :feed_url, :category_id, :section_id
end

class FeedEntry < ActiveRecord::Base
  belongs_to :feed
  belongs_to :category
  belongs_to :section
  validates_presence_of :title, :url
end

Make sense? Now, in my index page, I want to basically say... If you are in the Category Books, on the Home Page Section, give me the feed entries grouped by Feed...

In my controller:

def index
    @section = Section.find_by_name("Home Page")
    @books = Category.find_by_name("Books")
end

In my view:

<%= render :partial => 'feed_list',
           :locals => {:feed_group => @books.feeds} 
-%>

This partial will spit out the markup for each feed entry in the @books collection of Feeds. Now what I need to do is somehow combine the @books with the @section...

I tried this:

<%= render :partial => 'feed_list',
           :locals => {:feed_group => @books.feeds(:section_id => @section.id)} 
-%>

But it isn't limiting by the section ID. I've confirmed the section ID by using the same code in the console...

Make sense? Any advice?

Thanks!

Answer 1

Try something like this:

:locals => {:feed_group => @books.feeds.all(:conditions => {:section_id => @section.id})}