extjs datefilter firing additional ajax requests? -

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i have initialised gridfilter date filter in following way:

var filtersxxx = new ext.ux.grid.gridfilters({     filters: [         {type: 'date',  dataindex: 'confirmeddate'}     ] }); filtersxxx.autoreload = false; this.xxxgrid.plugins=[this.xxxgrid.initplugin(filtersxxx)];  //add event handler when filter updated: this.xxxgrid.on('filterupdate',function(){     alert('filterupdate');     this.xxxtab.populatedata.call(this);      //populatedata custom function sends ajax request },this);  //override buildquery manipulate params filtersxxx.buildquery = function (filtersxxx) {     var filterparams = ext.util.json.decode(this.store.baseparams.filterparams);  //  filterparams defiend inside store namevaluepair.this sent server      for(var i=0, len=filtersxxx.length; i<len; i++) {         var gridfilter1 = filtersxxx[i];          var objtemp = {x:  gridfilter1.data["value"]};         objtemp[gridfilter1.field] =objtemp["x"];          delete objtemp["x"];         ext.apply(filterparams,objtemp);      }     return {filterparams:ext.util.json.encode(filterparams)}; }

when page loads, , select date(lets say:before), 'filterupdate' fires 3 times , each results in call populatedata. there 3 ajax requests. on subsequent times, whenever filter changed i.ee date selected, fires twice.

what doing wrong?
edit:xxxgrid gridpanel

edit#2: problem seems this: when select datepicker, fires filterupdatevent immediately. results in call populatedata i.e. 1 ajax request. after that, fires oncheckchange--->filterupdate-->populatedata--->ajax request onmenuselect --> filterupdate-->populatedata--->ajax request

is there way this: when first 'filterupdate' fires, check if 'oncheckchange' or 'onmenuselect' there. if present, nothing on first 'filterupdate'


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