Rails - Jun 2006 - Passing parameters to ''remote_function''

Hi,
I am trying to use the ''remote_function'' helper method from
the
PrototypeHelper class on a the onblur event of a text_field for filling 
a form with data via AJAX.

How can I get the value of the text_field for making a query to the 
database in the controller action?

<%= text_field("item", "code" ,
   :onblur => remote_function(:update => ''mydiv'',
                              :url =>{:action =>
''my_action''})
%>

Is there something like the :with of a observe_field to specify the 
parameters for the XMLHttpRequest?

Thanks




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