KendoUI Grid Filtering Issues - kendo-ui

Question

I'm using the latest version of kendoui and whenever I use the "is not equal to" or "does not contain" filter I get the following error:
Uncaught TypeError: Cannot read property 'length' of undefined
I'm using a server side datasource, all the other filters seem to work without issue.
Also, how do I specify a datetimepicker for a date column?
I've looked at the documentation and tried using:
filterable: {
ui: "datetimepicker"
}
But it never shows the datetimepicker.
Here is the code:
var dataSourceArguments = {
pageSize:10,
serverPaging:true,
serverFiltering:true,
serverSorting:true,
transport:{
read:{
url:$("#grid_order").attr('data-url'),
dataType:"json"
}
},
schema:{
total:"count",
data:'fields'
},
sort:{'field':'order_date', dir:'desc'}
};
var ds2 = new kendo.data.DataSource(dataSourceArguments);
$("#grid_order").kendoGrid({
dataSource:ds2,
groupable:true,
scrollable:true,
sortable:true,
pageable:true,
columns:[
{
field:'order_date',
title:'Order Date',
width:150,
filterable: {
ui: "datetimepicker"
}
},
{
field:"reference",
title:'Reference',
width:120,
encoded:false
},
{
field:"client__company",
title:'Client',
encoded:false
},
{
field:"grand_total",
title:'Total',
width:100
},
{
field:'status',
title:'Status',
width:120,
encoded:false
},
{
field:'actions',
width:200,
title:'Actions',
filterable:false,
encoded:false,
sortable:false
}
],
filterable:true
});
UPDATE: I managed to get the datepicker working however whenever I choose the date, and click filter it filters but the date I've chosen dissapears from the field.

Answer 1

Add the order_date to the scheme from the data source, and the data type of the field to date.
See http://docs.kendoui.com/api/framework/datasource