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copied!<p>If you're using a more recent version of Rails, and wanted to do this in an unobtrusive fashion as possible, you'd use the :respond_to options in your controller, like so:</p> <pre><code>class MyController < ApplicationController def first_method respond_to do |format| format.html # this handles normal requests asking for html format.js # this handles requests asking for javascript to be sent instead end end end </code></pre> <p>If you're responding to a click, you'd do something like firing the query like so on the page</p> <pre><code>$("a.element_you_click_to_trigger").click(function(e) { e.preventDefault(); // make sure clicking doesn't trigger unneeded event bubbling $.ajax({url: "/controller/first_method", type: "POST", dataType: "script"}); // send a request and tell the server that you want javascript back } </code></pre> <p>Just like you have an index.html.erb file in your views folder for that controller, you'd have a similar <code>first_method.js.erb</code> file in relevant views folder along side your <code>index.html.erb</code> file:</p> <pre><code>views controller index.html.erb first_method.js.erb </code></pre> <p>This will return javascript that gets executed client side, but it gets build server side, so you can contain rails ERB fragments, so you can do something like this:</p> <pre><code>$('#loading_placeholder_element').html('<%= escape_javascript(render(:partial => "create")) %>'); // do some other stuff you fancy in the page // then make the next call once the other stuff is over (you may need to add this as a call back on an animation): $.ajax({url: "/controller/second_method", type: "POST", dataType: "script"}); </code></pre> <p>You'd then repeat the same process again for each of the others longer methods that fsmf highlighted.</p> <p>I found this <a href="http://railscasts.com/episodes/136-jquery" rel="nofollow noreferrer">Railscast on jQuery</a> incredibly helpful when I was learning this a couple of months ago, and I'd really recommend it.</p> <p>Hope this helps !</p>

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