AngularJS ng-grid - 动态更新列和结果

我是 ng-grid 的新手。我们如何动态更新网格内的列和结果。

我创建了一个http://plnkr.co/edit/CwUVIzSKVNCMTgpOW87f?p=preview http://plnkr.co/edit/CwUVIzSKVNCMTgpOW87f?p=preview

Script

var app = angular.module('myApp', ['ngGrid']); app.controller('MyCtrl', function($scope) {
    $scope.myData = [{name: "Moroni", age: 50},
                     {name: "Tiancum", age: 43},
                     {name: "Jacob", age: 27},
                     {name: "Nephi", age: 29},
                     {name: "Enos", age: 34}];  
    $scope.gridOptions = { 
        data: 'myData',
        columnDefs: [{field: 'name', displayName: 'Name'}, {field:'age', displayName:'Age'}]
    };

    $scope.update_columns = function($event){ console.log("asd")
      $scope.myData = [{new_name: "Moroni", new_age: 50, pin: 123},
       {new_name: "Tiancum", new_age: 43, pin: 345},
       {new_name: "Jacob", new_age: 27, pin: 567},
       {new_name: "Nephi", new_age: 29, pin: 789},
       {new_name: "Enos", new_age: 34, pin: 012}
      ];

      $scope.gridOptions.columnDefs = [
        {field: 'new_name', displayName: 'New Name'}, 
        {field:'new_age', displayName:'New Age'},
        {field:'pin', displayName:'Pin'}
      ];

    } });

页面加载时，网格将显示一组结果，单击更改列时，我们需要更新结果和列。我现在实施的方式没有达到预期效果。难道我做错了什么？

提前致谢。

您必须在范围上设置列定义变体。您还可以定义配置属性columnDefs带有表示范围属性的字符串。像这样的配置data，这允许您观察范围字段并将其关闭。

这是更新的 Plunker http://plnkr.co/edit/2Kce2v?p=preview.

js的修改：

var app = angular.module('myApp', ['ngGrid']);
app.controller('MyCtrl', function($scope) {
    $scope.columns1 = [{field: 'name', displayName: 'Name'}, {field:'age', displayName:'Age'}];
    $scope.columns2 = [{field: 'new_name', displayName: 'New Name'}, {field:'new_age', displayName:'New Age'},{field:'pin', displayName:'Pin'}];
    $scope.columnsSelected = $scope.columns1;
    $scope.myData = [{name: "Moroni", age: 50},
                     {name: "Tiancum", age: 43},
                     {name: "Jacob", age: 27},
                     {name: "Nephi", age: 29},
                     {name: "Enos", age: 34}];  
    $scope.gridOptions = { 
        data: 'myData',
        columnDefs: 'columnsSelected'
    };

    $scope.update_columns = function($event) { 

      $scope.columnsSelected = $scope.columns2;

      $scope.myData = [{new_name: "Moroni", new_age: 50, pin: 123},
       {new_name: "Tiancum", new_age: 43, pin: 345},
       {new_name: "Jacob", new_age: 27, pin: 567},
       {new_name: "Nephi", new_age: 29, pin: 789},
       {new_name: "Enos", new_age: 34, pin: 012}
      ];
    }
});