Rails - Oct 2006 - has many :through, accessing join model attribute (newbie)

from the rails recipes i have a has_many through "working".
I can list a user and what magazines he subscribes to. but I can''t
seem to figure out how to get the other attributes from subscriptions.
(like last_renewed_on)

reader_controller.rb

def list_reader
  @readers = Reader.find(1)
end

----------
list_readers.rhtml
<dl>
<dt><%= readers.name %> </dt>

<% @readers.magazine.each do |reader|%>
<dd><%= reader.title%></dd>
<% end %>
</dl>
----------
I''ve tried
<%= reader.last_renewed_on %>
<%= reader.subscription.last_renewed_on %>
<%= subscription.last_renewed_on %>

i''m obviously lost.
i perused the has many through blog and flipped through my books and
googled. I also have a hard time turning the "command line" examples
into "views"

thanks
john

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John Ivanoff wrote:
> from the rails recipes i have a has_many through "working".
> I can list a user and what magazines he subscribes to. but I can''t
> seem to figure out how to get the other attributes from subscriptions.
> (like last_renewed_on)
> 
> reader_controller.rb
> 
> def list_reader
>   @readers = Reader.find(1)
> end
> 
> ----------
> list_readers.rhtml
> <dl>
> <dt><%= readers.name %> </dt>
> 
> <% @readers.magazine.each do |reader|%>
> <dd><%= reader.title%></dd>
> <% end %>
> </dl>
> ----------
> I''ve tried
> <%= reader.last_renewed_on %>
> <%= reader.subscription.last_renewed_on %>
> <%= subscription.last_renewed_on %>
First off, your iterator code isn''t as clear as it could be.

Is @readers a collection?

If it''s not, then it should probably read...

@reader.magazines.each do |magazine|

Since within the block you are working with magazines and not readers 
(directly).

You should be able to access the subscription model directly from both 
your reader and magazine models. If you can''t, you probably
don''t have
it setup properly.

An example from some code I wrote a few days ago...

class Ticket

  has_many :showings
  has_many :days, :through => :showings

end

class Day

  has_many :showings, :dependent => :destroy
  has_many :tickets, :through => :showings

end

class Showing

  belongs_to :day
  belongs_to :ticket

end

I''d suggest playing around in the console to make absolutely certain 
everything works before writing views. (Actually, I''d _really_ suggest 
you write unit tests to make sure everything works (and continues to 
work as you write more code).)

Anywho, hope that helps out.

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Posted via http://www.ruby-forum.com/.

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If you are using edge Rails, it makes it a lot easier to handle this
kind of relationship. I would look at the DHH''s Railsconf 2006 pdf
presentation online. It has similar examples. Another great resource
is Peepcode screencast on RESTful Rails.

On 10/16/06, John Ivanoff
<john.ivanoff-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
>
> from the rails recipes i have a has_many through "working".
> I can list a user and what magazines he subscribes to. but I can''t
> seem to figure out how to get the other attributes from subscriptions.
> (like last_renewed_on)
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Since the has_many through plugin has become part of the edge Rails,
will it create any problem if I have the plugin installed and use the
edge Rails at the same time?
>
> I''d suggest playing around in the console to make absolutely
certain
> everything works before writing views. (Actually, I''d _really_
suggest
> you write unit tests to make sure everything works (and continues to
> work as you write more code).)
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I''ll check those out. thanks

On 10/16/06, Bala Paranj
<bcparanj-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
>
> If you are using edge Rails, it makes it a lot easier to handle this
> kind of relationship. I would look at the DHH''s Railsconf 2006 pdf
> presentation online. It has similar examples. Another great resource
> is Peepcode screencast on RESTful Rails.
>
> On 10/16/06, John Ivanoff
<john.ivanoff-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> >
> > from the rails recipes i have a has_many through "working".
> > I can list a user and what magazines he subscribes to. but I
can''t
> > seem to figure out how to get the other attributes from subscriptions.
> > (like last_renewed_on)
>
> >
>
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