Jeremy Durham

A few applications I’ve been a part of have use an observe_field for product description previews, or even my blog (to allow me to preview my posts). If I ever work on this site, comment preview will probably use observe_field.

Anyways, I always just used request.raw_post in the controller to catch the posted data and process it. You can use the :with option in observe_field to pass it as a normal param. :with works like this:

<%= observe_field "product_description", 
                  :frequency => 2, 
                  :update => "preview", 
                  :complete => "Element.show('preview')", 
                  :url => { :action => "preview" }, 
                  :with => "'q='+escape(value)" %> 

Your params will look something like this:

@ {"action"=>"preview", “q”=>"whateveryoutyped", “controller”=>"products"} @