Rails - Feb 2009 - Using same partial with diff ajax requests.

Im wondering what the best design implementation with DRY in mind in
the following situation.  I have a number of situations where I am
rendering the same partial with different ajax requests.  For example,
I have an inbox table and I have to link_to_remotes.  One links to
viewing all messages and another links to show a single message.  Im
wondering, does it make sense to use the same partial and create a
variable in the controller which could be used in an if else statement
within the view.  like:

def show
@type = "show"
page.replace_html "inbox_message", :partial =>
''message'', :locals =>
{:type => @type}
end

def index
@type = "show_all"
page.replace_html "inbox_message", :partial =>
''message'', :locals =>
{:type => @type}
end

then in the _message partial i could have somehting like:
if @type == "show"
  only show one message
else
  show all messages
end

Is there a better way to do this?  Would just creating two different
partials be any better?  What about any performance issues?

Thanks, Dave
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I think 2 partials would work nicely:

# _messages.html.erb
<h1>Listing Messages</h1>
<ul>
  <%= render :partial => ''message'', :collection =>
@messages %>
</ul>

# _message.html.erb
<li><%= message.title %> - <%= message.body %></li>

Aaron


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