jqGrid: Searching with json data - spring

Question

I have succeeded to load data from server in spring framework with pagination but my searching/finding records and filter bar is not working.
But if i make loadonce=true then the filter or searching working fine.
My code for my jsp is:
var allColumnNames=["Sr. No","contactName", "city", "country"];
var grid = jQuery('#list');
grid.jqGrid({
url:'customerData.html',
datatype: 'json',
mtype: 'GET',
loadonce: false,
colNames: allColumnNames,
colModel: [
{ name:'id', index:'id', jsonmap:"id", width:20,index:'id', search:true, stype:'int' ,hidden:true},
{ name: "contactName" ,index:'contactName', width:160, search:true, stype:'text' },
{ name: "city",index:'city', width:160, search:true, stype:'text' },
{ name: "country" ,index:'country', width:160, search:true, stype:'text' }
],
caption: 'Customer Details',
height: 'auto',
gridview: true,
rownumbers: true,
viewrecords: true,
pager: '#pager',
rowNum: 10,
rowList: [5, 10, 20, 50],
rownumbers: true
});
$("#search").click(function() {
var searchFiler = $("#filter").val(), f;
if (searchFiler.length === 0) {
grid[0].p.search = false;
$.extend(grid[0].p.postData,{filters:""});
}
f = {groupOp:"OR",rules:[]};
f.rules.push({field:"contactName",op:"cn",data:searchFiler});
f.rules.push({field:"city",op:"cn",data:searchFiler});
grid[0].p.search = true;
$.extend(grid[0].p.postData,{filters:JSON.stringify(f)});
grid.trigger("reloadGrid",[{page:1,current:true}]);
});
I am new to jqGrid, Please help me in above problem.
Thanks in advance!

Answer 1

When you put loadonce=true jqGrid only makes one request that takes all the data, and then if you filter, sort, search... are controlled by jqGrid in the frontend.
But if loadonce=false, only loads the data needed at this moment, and every time jqGrid needs new data, it sends another request to the server with differents parameters.
So I can guess that your server file "customerData.html", it's not ready to answer all the different questions.
Here http://trirand.com there are a lot of jqGrid examples an most of them have the server side code.