Kendo UI grid, issue saving new record (AngularJS)

问题

I have an order line grid with a custom edit form, whose fields are pre-populated for adding a row. I thought I had this working based on help I received from this question: How to populate add-row form programmatically for Kendo UI grid (AngularJS)

However, though it works in the simplified plunker, there are a couple of issues when trying to implement it in a real project.

Here is an updated plunker to show the issues below: http://plnkr.co/edit/wtW4RzVu7uuhrJJbWvVd?p=preview

Here is the relevant HTML:

<div id="wrapper" class="container-fluid" ng-controller="ticketEntryController">
  <div ng-controller="ticketLineController">
      <div kendo-grid="ticketLineGrid" k-options="getTicketLineGridOptions()"></div>
  </div>
  <button id="addButton" ng-click="addRow()" class="btn btn-primary btn-sm">Add Row</button>

Clicking the addButton button calls $scope.addRow on the ticketEntryController:

(function () {
    'use strict';
    angular.module('app').controller('ticketEntryController', ticketEntryController);

    function ticketEntryController($scope) {
        $scope.lineGrid = {};

        $scope.addRow = function () {
          var item =  {
            itemNo: "TEST 123",
            id: 0,
            itemDescr: "new item description",
            cat: "CAM",
            mfg: "ACME",
            mfgPartNo: "ABC123456",
            itmStat2: "N",
            price: 133,
            qty: 1
          };
          var ticketId = 200;
          $scope.$broadcast('AddRow', ticketId, item);
        }
    }
})();

addRow() above broadcasts to $scope.$on in ticketLineController:

(function () {
    'use strict';
    angular.module('app').controller('ticketLineController', ticketLineController);

    function ticketLineController($scope) {
        $scope.$on('AddRow', function(event, ticketId, item) {
            console.log("ticketLineController, AddRow: " + item.itemNo);

            $scope.ticketId = ticketId;
            $scope.itemForAdd = item;
            $scope.ticketLineGrid.addRow();
        });

        $scope.getTicketLineGridOptions = function () {
            return {
                dataSource: {
                    type: "json", 
                    transport: {
                        read: function (options) {
                          console.log("--- read ---");
                          options.success(ticketLines);
                        },
                        create: function (options) {
                          console.log("--- create ---");
                          ticketLines.push(options.data);
                          options.success(options.data);
                        },
                        update: function (options) {   // Why is it calling "update" for addRow?? 
                          console.log("--- update ---"); 
                          ticketLines.push(options.data); 
                          options.success(options.data);
                        },
                        destroy:function (options) {   // Why is it calling "destroy" for addRow (issue 2)?
                          console.log("--- destroy ---");
                        },
                    },
                    schema: {
                        model: {
                            id: "id",
                            fields: {
                                id: { type: "string" },
                                orderId: { type: "number" },
                                lineNo: { type: "number" },
                                ...
                            },
                        }
                    },
                    sort: [{ field: "ItemNo", dir: "asc" }],
                    pageSize: 50
                },
                ...
                edit: function (e) {
                    if (e.model.isNew()) {
                        e.model.set("orderId", $scope.ticketId);
                        e.model.set("lineNo", 0);
                        e.model.set("id", $scope.ticketId + "_0");
                        ...
                        e.model.set("qty", 1);
                    }
                    var popupWindow = e.container.getKendoWindow();
                    e.container.find(".k-edit-form-container").width("auto");
                    popupWindow.setOptions({
                        width: 640
                    });
                },

Issue #1: When adding a row, "update" is getting called instead of "create" on the grid's dataSource.

Issue #2: After cancelling out of the edit form, the next time you try to add a row, it for some reason calls "destroy" after the "update" To reproduce: 1) Click Add Row 2) Click Cancel in the edit form 3) Click Add Row again 4) Click Update

回答1:

I heard back from Telerik on this, and the reason "update" was being called instead of "create" is that the id field must be empty for a new record (=0 for integer or "" for string id fields). Once I fixed that, both issues were resolved.

On a related note, the record returned from the server POST (to add record) must contain a populated id field, so that subsequent edits call the "update" instead of "create" in the grid.

回答2:

I had exactly the same issue. Actually The ID field is autogenerated in my database and the issue was resolved simply by assigning newly created id back to the ViewModel as below:

        dbContext.Shipping.Add(entity);
        dbContext.SaveChanges();

        //int newID = entity.Id;
        ShippingViewModel.Id = entity.Id;

Hope this would help.

来源：https://stackoverflow.com/questions/25695180/kendo-ui-grid-issue-saving-new-record-angularjs