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Grid DataSource Total Function not doing what I expect

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Data Source

This is a migrated thread and some comments may be shown as answers.

Marius asked on 17 Mar 2016, 08:55 AM

Hi,

I have the following Problem: I have a Grid with remote Data Binding via Ajax request. When the Parameters for the Request Change and I call the read() Function again I also have to change the total Value, but the Data Request doesn't send the Total. This is done by a second Request that I send with a angular $http request. When I then call The Total Function it doesnt update and has some strange behaviour:

Total Method:

total: () =>

return $scope.collectionSize

success Callback of getTotal request:

$scope.collectionSize = response.data

console.log "next log should be: " + $scope.collectionSize

console.log "but is: " + $scope.grid.dataSource.total()

and the Console log on initial and second requests:

next log should be: 53

but is: 0

next log should be: 3

but is: 53

If I Call a $apply in the getTotal it says digest already in Progress. The Grid is initialised with the angularjs feature.

On initial load the Grid says ... of 53 Items.

On second Data load it says ...of 53 Items again.

And on the third call it then says ... of 3 Items.

So it is always one load behind, except on the initial load.

4 Answers, 1 is accepted

answered on 22 Mar 2016, 08:19 AM

Hi Nikolay,

yes I have serverPaging set to true, but the Backend I am working with was not build for KendoUI and it only returns the total count of items on a seperate request, which I cannot change.

My Problem/missunderstanding was that I thought calling the total() Function on the dataSource would actually execute the function that I declared on the dataSource initialisation (like the read() function). What happens though is that it only returns the total Item count it currently has stored (does not recalulate).

So as I said the solution/workaroud I use now is that I first call the getTotal function with the Server request to get the total Item count and when that finishes I call the Read() function on the dataSource.

Regards,

Marius