Rails - May 2011 - jquery rails ajax

so I am using jquery and updating a dom element with

$(''#thelist'').replaceWith("<%=
escape_javascript(render(:partial =>
@deals)) %>");

this works fine except it is not hitting the server so if @deals is
updated, it is not refreshing and showing the latest version. My
question is how to ajax this thing so that it will update to the
latest version of @deals. The full code is:
onPullDown: function () {
            setTimeout(function () {

               
$(''#thelist'').replaceWith("<%escape_javascript(render(:partial
=> @deals)) %>");
                myScroll.refresh();
            });
        },

thanks in advance!

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That makes sense. When your page loads, the value of @deals is inserted in 
the JavaScript that is sent to the client. As you noticed, since your 
JavaScript code never makes a request back to the server, it just keeps 
calling replaceWith on the value of the original @deals.

The easiest way is probably to have some type of update action that responds 
to JS. Then in your view, you can render the newly refreshed @deals.
You''ll
also need to update your JavaScript to hit this action on the server and 
update your DOM element with the result. Here are some rough code examples.

In your controller:

def some_update
  @deals = Deal.all
end

In some_update.js.erb:

<%= escape_javascript(render(:partial => @deals)) %>

Then change your JavaScript to hit some_update and use the result of 
some_update:

onPullDown: function () {
    setTimeout(function () {    
        .ajax({
            url: ''controller/some_update.js'',
            success: function(data) {
                $(''#thelist'').replaceWith(data);
                myScroll.refresh();
            }
        });
    });
}, 

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