Database filtering leads to rails 3.2 using AJAx and Datatables

I have successfully followed railscasts datatables here http://railscasts.com/episodes/340-datatables loading and filtering my part of the server. The fact is that I would like my category parameters to be placed in rectangles similar to this example on the page http://datatables.net/release-datatables/examples/api/multi_filter_select.html

I would really appreciate it if someone could describe how to do this, perhaps using the Ryan model as an example, I would tear my hair off for several hours.

thank