How to call refresh() on a kendo-grid from an Angular controller?

Question

I'm attempting to follow several suggestions on refreshing a kendo-grid such as this.

The essential is that in the html I have:

<div kendo-grid="vm.webapiGrid" options="vm.mainGridOptions">

Then in the controller I have:

vm.webapiGrid.refresh();

Note: I'm using the ControllerAs syntax so I am using "vm" rather than $scope.

My problem is that "vm.webapiGrid" is undefined. This seems so straightforward, but I'm not sure why it is undefined.

Answer 1

Found the answer. One other method of refreshing the datasource I read about was to do something like:

vm.mainGridOptions.datasource.transport.read();

This wasn't working for me as "read" was undefined. Looking at my datasource definition, I saw the reason, read needs a parameter (in this case "e"):

    vm.mainGridOptions = {
        dataSource: {
            transport: {
                read: function (e) {
                    task.getAllTasks(vm.appContext.current.contextSetting).
                        then(function (data) {
                            e.success(data);
                        });
                },
            }
        },

To solve, I saved "e" in my scope and then reused it when I wanted to refresh:

    vm.mainGridOptions = {
        dataSource: {
            transport: {
                read: function (e) {
                    task.getAllTasks(vm.appContext.current.contextSetting).
                        then(function (data) {
                            e.success(data);
                            vm.optionCallback = e;
                        });
                },
            }
        },

and then:

if (vm.optionCallback !== undefined) {
   vm.mainGridOptions.dataSource.transport.read(vm.optionCallback);
}

Problem solved (I hope).