adding some ajax to rails app using jquery -


I have a simple drop-down box on a page with the code below: 

 < Code> & lt; P & gt; & Lt;% = f.label "Group"% & gt; & Lt; Br / & gt; Select & lt;% = ("Employee", "Group_ID", group.Collect {| p | [p.name, p.id]}, {: include_blank => true})% & gt; & Lt; / P & gt; & Lt; Div id = "employee" & gt; & Lt ;! - This will be filled with AJAX request - & gt; & Lt; / Div & gt;

This shows the group to the user. What do I want is a division next to this drop down, which shows the number of employees related to a group. I get this number: 

  Groups.employees.count

But I do not know how this will work with Ajax like drop down changes To get this number you have to go back to the server and then update the div.

If I need to, I can use jQuery, possibly: write all the groups with all the counts in the HTML or Javascript variable, and to control the use of JavaScript only to appear at any one time For me


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