Rails - Feb 2008 - Hiding partials when used with rjs.

Hi,

I often find myself using partials in the following way when they are
intended for use with both javascript and html rendering:

-- page.html.erb
  render :partial => ''partial''

-- page.rjs
  page.replace ''element'',
    :partial => ''partial'', :locals => {:hidden =>
true}
  page.visual_effect :appear, ''element''

--_partial.html.erb
<%
  hidden ||= nil
%>
<div <%= ''style="display: none"'' if hidden
%>>
  Whatever
</div>

I was wondering whether anyone could suggest a better way of doing
this as I don''t really like using the hidden ||= nil at the top of
every partial that is intended for this usage?

Thanks in advance,
Toby
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