Custom ordering does not seem to be getting called

dhosek

I want to be able to reverse the normal ordering of numeric columns with data tables (in part so that when a user clicks on a column heading the default ordering will be high to low). I've done the following:

    $(document).ready( function () {
        jQuery.extend( jQuery.fn.dataTableExt.oSort, {
            "rev-pre": function(a) {
                return parseInt(a);
            },
            "rev-asc": function(a,b) {
                console.log(a + "\t" + b);
                return ((a>b) ? -1 : ((a<b) ?   1 : 0));
            },
            "rev-desc": function(a,b) {
                console.log("rev: " + a + "\t" + b);
                return ((a<b) ? -1 : ((a>b) ? 1 : 0));
            }
         });
                 
        $('#rankings').DataTable({
            "paging"     : false,
            "ordering"   : true,
             "columns"    : [null,
                             { "type" : "rev"},
                             { "type" : "rev"},
                             { "type" : "rev"},
                             { "type" : "rev"}
                             ],
            "order"      : [[1, "asc"]]
        });
    } );

which I thought would work but what I'm finding is that rev-asc/rev-desc are never called (rev-pre, is). Obviously I'm doing something ridiculously wrong here, but I've been unable to figure it out on my own. Any ideas? I'm using 1.10.8 from the CDN