Getting filters used in KendoUI Grid - telerik

Question

In KendoUI, I have a grid with filters on. I am more interested in knowing all the filters used by user for saving purpose so that next time user comes in, they can be auto-fill. How do I get all the filters used?

Answer 1

Not sure how your code looks but you should be able to get the Grid's datasource object and call the method filter() to get the currently applied datasource filters. Take a look at the example below taken from here:
<script>
var dataSource = new kendo.data.DataSource({
data: [
{ name: "Jane Doe" },
{ name: "John Doe" }
],
filter: { field: "name", operator: "startswith", value: "Jane" }
});
var filter = dataSource.filter();
console.log(filter.logic); // displays "and"
console.log(filter.filters[0]); // displays '{field: "name", operator: "startswith", value: "Jane"}'
</script>

Answer 2

Just to add to the answers above - if you want to do it purely on the front end without even targeting the actual data source - your can use the following...
var myGrid = $("#gridname").data("kendoGrid");
myGrid.dataSource.filter().filters[0];
You can than break this up into different parameters ...
myGrid.dataSource.filter().filters[0].field
myGrid.dataSource.filter().filters[0].operator
myGrid.dataSource.filter().filters[0].value
Hope this helps - cheers

Answer 3

My configuration is MVC with the data being fetched server-side. What I mean is that the grid calls this method to get its data:
public ActionResult Documents_Read([DataSourceRequest] DataSourceRequest request,
int documentType = (int)ApiGlobals.TrxTypes.חשבונית)
What I do is simple:
I capture the request object in a Session variable and then use the session variable whenever I need it. In the following example I use the filter to print only the documents filtered in the grid:
public ActionResult Documents_Read([DataSourceRequest] DataSourceRequest request,
int documentType = (int)ApiGlobals.TrxTypes.חשבונית)
{
Session["DocumentListFilter"] = request;
...
}
public ActionResult PrintListKendo(int documentType)
{
DataSourceRequest request = (DataSourceRequest)Session["DocumentListFilter"];
if (request == null)
{
request = new DataSourceRequest();
}
request.Page = 1;
request.PageSize = int.MaxValue;
IQueryable<Document> data = _db.GetDocuments()
.Where(d => d.TrxTypeId == (int)documentType);
DataSourceResult filteredData = data.ToDataSourceResult<Document, DocumentListSingleDocumentViewModel>(request,
d => ViewModelFactory.Create(d));
//... call the reporting package with the data, etc.
}
You can save the request object (=serialize it, or save it properties) to the database and reload it when the user opens the relevant page and the grid fetched its data,