Rails - May 2009 - nested habtm in views

Hi folks,

hope someone can help me with this:

There are four tables:
Courses (has_many) -> CourseModules (has_and_belongs_to_many) ->
CourseModulesLectures (has_and_belongs_to_many) ->Lectures.

I''d like to get a table with all courses, modules and lectures, which
works quite fine:

<% unless @course.course_modules.empty? %>
<% @course.course_modules.each do |m| %>
  <%=h m.semester %>
  <%=h m.title %>
  <% unless m.lectures.empty? %>
  <% m.lectures.each do |lecture| %>
    <%= link_to lecture.title, lecture %> <!-- -->
  <% end %>
  <% end %>
<% end %>
<% end %>
(stripped unnecessary lines)

The problem is, that ''lecture'' in the marked line refers to
the id of
the habtm-table ''CourseModulesLectures'', and not to the
correct id of
the lecture. How can I fix that?

Any ideas?

Thanks a lot!
-- 
Posted via http://www.ruby-forum.com/.

Maybe:

  <%= link_to lecture.title, lecture.lecture_id %> <!-- -->

?

-----Original Message-----
From: rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
[mailto:rubyonrails-talk@googlegroups.com] On Behalf Of Patrick Heneise
Sent: Friday, May 22, 2009 1:45 AM
To: rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
Subject: [Rails] nested habtm in views


Hi folks,

hope someone can help me with this:

There are four tables:
Courses (has_many) -> CourseModules (has_and_belongs_to_many) ->
CourseModulesLectures (has_and_belongs_to_many) ->Lectures.

I''d like to get a table with all courses, modules and lectures, which
works quite fine:

<% unless @course.course_modules.empty? %> <%
@course.course_modules.each do |m| %>
  <%=h m.semester %>
  <%=h m.title %>
  <% unless m.lectures.empty? %>
  <% m.lectures.each do |lecture| %>
    <%= link_to lecture.title, lecture %> <!-- -->
  <% end %>
  <% end %>
<% end %>
<% end %>
(stripped unnecessary lines)

The problem is, that ''lecture'' in the marked line refers to
the id of the habtm-table ''CourseModulesLectures'', and not to
the correct id of the lecture. How can I fix that?

Any ideas?

Thanks a lot!
--
Posted via http://www.ruby-forum.com/.



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Then the link is set to the courses-controller. It works with something 
like link_to xxx, lectures_path(@id, :id => lecture.lecture_id) but 
that''s not good rails in my eyes. Is there any solution to this?
-- 
Posted via http://www.ruby-forum.com/.

Any ideas? Is there any mistake in my design? Should I use has_many 
:through?
-- 
Posted via http://www.ruby-forum.com/.