Dynamic Json source

[Ellipsis]

When using combogrid, combobox, datagrid etc I prefer the use of a dynamic Json source.
I currently use the autocomplete function of easyUI and it has the extra options: minLength and Data.

The data option enables you to send parameters with the Json URL, example :
http://jqueryui.com/demos/autocomplete/#remote-jsonp

Code:

$( "#city" ).autocomplete({
  source: function( request, response ) {
    $.ajax({
       url: "http://ws.geonames.org/searchJSON",
       dataType: "jsonp",
       data: {
          featureClass: "P",
	  style: "full",
	  maxRows: 12,
	  name_startsWith: request.term
},
//// etc etc
,
minLength: 2,

//etc etc

Is this possible for the datagrid in easyUI, it would make the function so much more complete.
For example to create a datagrid based on what is typed in the input field...

Or is it already possible?

[stworthy]

The customized loading functionality is available since 1.2.6.

Code:

$(function(){
	$('#cc').combogrid({
		mode: 'remote',
		//hasDownArrow: false,
                width: 200,
		panelWidth: 400,
		fitColumns: true,
		idField: 'geonameId',
		textField: 'adminName1',
		columns: [[
			{field:'name',title:'Name',width:80},
			{field:'adminName1',title:'adminName1',width:180},
			{field:'countryName',title:'countryName',width:180}
		]],
		onBeforeLoad: function(param){
			if (!param.q || param.q.length<2) return false;
		},
		loader: function(param,success,error){
			$.ajax({
				url: 'http://ws.geonames.org/searchJSON',
				dataType: 'jsonp',
				data: {
					featureClass: 'P',
					style: 'full',
					maxRows: 12,
					name_startsWith: param.q
				},
				success: function(data){
					success(data.geonames);
				},
				error: function(){
					error.apply(this, arguments);
				}
			});
		}
	});
});

[Ellipsis]

 

No luck, the loader is not fired...

The code is inside a function that is called after loading the plugins with easyloader.

Code:

jQuery('#studiegidsnummer').combogrid({
			mode: 'remote',
			width: 200,
			panelWidth: 400,
			fitColumns: true,
			idField: 'label',
			textField: 'title',
			columns:[[  
			            {field:'title',title:'titel',width:200},  
			            {field:'parentTemplateId',title:'Studiegidsnr.',width:200}  
			        ]],
			onBeforeLoad: function(param){
				if (!param || param.length<2) return false;
			},
			loader: function(param,success,error){
				jQuery.ajax({
					url: 'ajax?action=getSISCoursesJSON',
					dataType: 'jsonp',
					data: {
						catalogNumber: param.q+'%'
					},
					success: function(data){
						success(data.courseRecordSet);
					},
					error: function(){
						error.apply(this, arguments);
					}
				});
			}
		});

[keja]

The above code does not work. Any update on this how does will it work ?