Rails - Sep 2007 - Can someone help me with 'render partial' from a link?

What I am trying to achieve is to create a sidebar exactly like the one
on the left of this forum, but instead of showing all the links, there
would be a ''+'' sign next to each heading where you can click
to see the
links for that section. I am thinking render :partial is the best way to
do this but I''m not sure the best way to implement it.

My assumptions are:

1) I need a file ''sidebar.rhtml'' that is rendered in a forum
page. This
file will have the list of headings and link_to_remote calls into the
forum controller.

2) In the forum controller I need a function along the lines of
''expand_list'' which then calls render :partial for a given
list (can I
base which list is used on the :id param from the link_to_remote call?
if so how?). Each list will have a partial file - i.e. _list1.rhtml,
_list2.rhtml, ...

3) In the ''forum'' subfolder of views I should have each of the
partials
and they will look like this:

<div id=''list1''>
<ul>
<li><a href="/forum/1">Forum 1</a></li>
<li><a href="/forum/2">Forum 2</a></li>
</ul>
</div>



Does this sound correct? Am I missing anything? I tried to do the above
but kept getting parse errors when rendering the partials. Can someone
give me an example of how I should setup sidebar.rhtml to do the
link_to_remote calls? I am confused about how I should be using the
:update parameter and also :id if it is needed.

Thanks,
-Alex
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