Rails - Jan 2008 - Instance variable won't update using basic Ajax script

I have been beating my head against the wall on this for days. It seems
that I can''t get an instance variable to update using Ajax if it
contains an array.
If the instance variable contains a singular value, my Ajax update works
fine.

In this instance, @listcount contains a number here and works fine:
[code]
<%= periodically_call_remote( :update => "counter",:frequency
=> 2,:url
=> { :action => :update_counter }) %>
<div id="counter"><%= @listcounts %></div>
[/code]

In this next case, @trap contains an array that I have to iterate
through in my view and will not update using Ajax:
[code]
<%= periodically_call_remote( :update => "status",:frequency
=> 2,:url
=> { :action => :update_data }) %>
<div id="status">
<% even_odd = 0
for trap in @trap
even_odd = 1 - even_odd %>
<tr class="background<%= even_odd %>">
<td><%=trap.datetime %></td>
<td><%=trap.description %></td>
</div>

Can anyone point me in the right direction to get @trap to update using
Ajax?

Here is the controller code for @trap:
[code]
def update_data
        @trap = Trap.find(:all, :order => "datetime DESC")
        render :text => @trap
end
[/code]

Any and all suggested will be treated as gold :-)
thanks

jackster.mobi
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damn strait you can''t do that

<div id="status">
 <%= render :partial => ''status'', :locals => {:traps
=> @trap} %>
</div>


:partial => status:

<table>
<% even_odd = 0
traps.each do |trap|
even_odd = 1 - even_odd %>
<tr class="background<%= even_odd %>">
<td><%=trap.datetime %></td>
<td><%=trap.description %></td>
</tr>
</table>


def update_data
        @trap = Trap.find(:all, :order => "datetime DESC")
        render :partial => ''status'', :locals => {:traps
=> @trap}
end
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thanks alot for the help Keynan...I NEVER would have guessed the syntax 
on that. I googled this problem for hours and found no documentation 
worth anything. I put in the code you suggested, but am getting errors.

I am gettting an error in my view:

         wrong number of arguments (0 for 3)

it doesn''t like the following line:

      <%= render :partial => ''status'', :locals =>
{:traps => @trap} %>

It might be a mistake on my interpretation of your instructions, here''s
what I have in my config based on your advice:
------------begin view ---------------------------
<%= periodically_call_remote( :update => "status",:frequency
=> 2,:url
=> { :action => :update_data }) %>

<table width="100%">
<tr class="background0">
<td>&nbsp;</td>
</tr>
:partial => status:
<div id="status">
<%= render :partial => ''status'', :locals => {:traps
=> @trap} %>
</div>
</table>
<table width="100%" border="0">
<% even_odd = 0
traps.each do |trap|
even_odd = 1 - even_odd %>
<tr class="background<%= even_odd %>">
<td><%=trap.datetime %></td>
<td><%=trap.desc1 %></td></tr>
<% end %>
</table>
----------------end view --------------------------
----------------begin controller ------------------
def update_data
        @trap = Trap.find(:all, :order => "datetime DESC")
        render :partial => ''status'', :locals => {:traps
=> @trap}
end
---------------end controller-----------------------
I really appreciate the help on this....thanks.

jackster


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