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Grid dynamic loading with remote filter & remote sort

I'm using Grid Component for approx. 3k Entries, hence i'm using dataprocessor with daynamic loading.
All fine so far, but any filters created using
<code>myGrid.attachHeader("#text_filter,#combo_filter,#numeric_filter");</code>
just operate on local data...


my idea was to override the filter method and reload the contents with additional custom params, like:
<pseudocode>
dhtmlXGridObject.prototype.filterTreeBy=function(column, value, preserve){
// no idea how to implement similar behaviour
// actually any possibility to pass custom params to the DP would do the job
myGrid.myDataProcessorReloadByConfig( myPataProcessor, {filter: {column: "name", operand: "like", value: "Andy%" }, limit: 50, offset: 300});
}
</pseudocode>
// of course i'd also need remote sorting 8)

maybe soneone has an Idea or Hint to implement "remote Filtering" & "remote Sort" for dhtmlX Grid Component
many Thanx in advance

The rough solution can be checked here. 
http://dhtmlx.com/docs/products/dhtmlxGrid/doc/step-by-step/ch_biggrid.html#grid_sbs_biggrid

In case of built in filters, it may look as 
grid.attachEvent("onFilterStart",function(cols,vals){
   var data=[];
   for (var i=0; i<cols.length; i++) data.push(cols[i]+"="+vals[i]);
   grid.clearAll();
   grid.loadXML("some.php?mode=filter&"+data.join("&"));
   return false;  //block default filters
});

as result , each time when filter triggered, it will cause grid reloading from some URL, all filter values included in URL, so they will be accessible on server side. 

exactly what i was looking for.
thanks for the great help