Question

我正在学习MVC中的AngularJS并创建服务以将我的模型传递给Angular Controller。但它给了我错误

JavaScript运行时错误：＆＃39; accountModule＆＃39;未定义

这就是我在做的事情：

AccountController.cs

public ViewResult Index()
{
    var accounts = new List<Accounts>
                        {
                            new Accounts
                                {
                                    Id = 111,
                                    Designation = "Tech Lead",
                                    Name = "AAA"
                                },
                            new Accounts
                                {
                                    Id = 222,
                                    Designation = "Softwre Engineer",
                                    Name = "BBB"
                                },
                            new Accounts
                                {
                                    Id = 111,
                                    Designation = "Project Manager",
                                    Name = "CCC"
                                }
                        };

    var settings = new JsonSerializerSettings
                        {
                            ContractResolver = new CamelCasePropertyNamesContractResolver()
                        };

    var accountJson = JsonConvert.SerializeObject(accounts, Formatting.None, settings);

    return this.View("Index", (object)accountJson);
}

Index.cshtml

<script type="text/javascript" src="../../Scripts/Modules/Account/Account.js"></script>
<div ng-app="accountModule">
    <div ng-controller="accountController">
        <h1>{{message}}</h1>
        <div class="container" ng-init="employees in {{employees}}">
            <h2>Employee Details</h2>
            <div class="row">
                <table class="table table-condensed table-hover">
                    <tr>
                        <td>
                            ID
                        </td>
                        <td>
                            Name
                        </td>
                        <td>
                            Designation
                        </td>
                    </tr>
                    <tr ng-repeat="emp in employees">
                        <td>
                            {{emp.id}}
                        </td>
                        <td>
                            {{emp.name}}
                        </td>
                        <td>
                            {{emp.designation}}
                        </td>
                    </tr>
                </table>
            </div>
        </div>
        <div>
            @*{{emps}}*@
        </div>
    </div>
</div>

<script type="text/javascript">

    accountModule.factory('accountService', function() {
            var factory = {};

            factory.employees = @Html.Raw(Model);

            return factory;
        });

</script>

Account.js

var account = angular.module('accountModule',[]);

account.controller('accountController', [
    '$scope', 'accountService', function ($scope, accountService) {


        $scope.employees = accountService.employees;

        $scope.message = "Hi on " + (new Date()).toDateString();
    }
]);

我不明白我哪里出错了。

Answer 1

您需要在account.js。

之后立即移动内联脚本

此外，变量应为account而非accountModule

<强>代码

<script src="angular.js"></script>
<script src="app.js"></script>
<script src="account.js"></script>
<script type="text/javascript">
//account.factory('accountService', function() { //this is alternative use below one
angular.module('accountModule').factory('accountService', function() {
    var factory = {};

    factory.employees = @Html.Raw(Model);

    return factory;
});
</script>

Answer 2

MVC查看渲染顺序 - 1.首先从 View 开始，然后是相关的bundle（外部CSS，JS）。

2.为了传递Model数据，我们需要在.cshtml文件中有一个内联元素（虽然不推荐），但是，如果这样就可以了，那么使用服务注入到相关的控制器 -

@section scripts
    {
    <script>
    (function (undefined) {
        window.app.factory('searchBinding', function () {
            return @Html.Raw(Json.Encode(Model))
        })
    })(undefined);

</script>
}

现在，由于上面的代码是内联的，因此它将使用 View 本身执行，但Angular模块尚未定义为尚未下载。因此它会抛出 undefined 错误。
为了解决这个问题，我们可以在加载所有核心文件（包）之后在_Layout.cshtml中使用 RenderSection ，这甚至会强制内联部分仅在这些文件加载后加载已加载（在步骤2中。@section脚本用于此目的）。来自_Layout.cshtml文件的片段

@ Scripts.Render（ “〜/捆绑/ angularjs”）; @RenderSection（ “脚本”，假）;

使用Factory方法创建服务时，未定义AngularJS模块

2 个答案: