Kendo MVC Grid - filter empty values - model-view-controller

Question

How to implement custom filtering to include/exclude empty values (filtering by one column)?

Answer 1

What you could do is add a new column (boolean) in your model to indicate that another column is empty. And filter on this new column.

Answer 2

All you need is a "not equal" filter on the desired column.
<script>
$(document).ready(function () {
$("#grid").kendoGrid({
dataSource: {
data:[{
field1:"A",
field2:"Z"
}, {
field1:"B",
field2:"Y"
}, {
field1:"C",
field2:""
}, {
field1:"D",
field2:null
}],
filter: { field: "field2", operator: "neq", value: "" }
},
height: 550,
columns: [{
field: "field1",
title: "Field 1"
}, {
field: "field2",
title: "Field 2"
}]
});
});
</script>
http://dojo.telerik.com/Esada

Answer 3

---EDIT---
I did some research and i think ajax sometimes works with mvc ... anyways this is what you would do. I dont implicitly see the documentation for it or the mvc docs but its in the ajax docs
---EDIT---
If you set AutoPostBackOnFilter property of a column to True, the user does not need to press the filter button to initiate filtering. Instead, a postback filter operation occurs when the user types a filter in the filter box and presses [Enter] from the keyboard.
When AutoPostBackOnFilter is True, the column assumes a filter operation of Contains for string types or EqualTo for numeric types.You can change this to another filter function by setting the CurrentFilterFunction property. For example:
// filter out a certain column that is null
<telerik:GridBoundColumn DataField="ProductName" HeaderText="ProductName" SortExpression="ProductName"
UniqueName="ProductName" CurrentFilterFunction="StartsWith" AutoPostBackOnFilter="true" />
/*
This is a rundown version of the above code
if you happen to have a grid defined somewhere
else in the code. Basically you would do this
to apply the filter or create multiple to apply
multiple.
*/
$(document).ready(function() {
$("#grid").kendoGrid({
filter: {
ColumnName: "TheColumn",
operator: "neq",
value: ""
}
});
});