json - 使用 Angular 从键值数组中获取 JSON 值

Question

嗨，我是 angular 的新手，只是想学习如何做一些事情。我一直在尝试显示以下数据。使用 Chrome 的 Batarang 插件，我可以看到我的 Restful 网络服务返回以下 json，它被包装到我的模型中。

    { 
    course:  { 
        country: Test1
        numberEnrolledPerMonthPerWeek:  { 
            entry: 
            [  { 
                key: 2
                value:  { 
                    numberEnrolled: 0
                    weeks: 2
                    year: 2011
                } 
            } ,  { 
                key: 3
                value:  { 
                    numberEnrolled: 4
                    weeks: 3
                    year: 2011
                } 
            } ,  { 
                key: 4
                value:  { 
                    numberEnrolled: 6
                    weeks: 4
                    year: 2011
                } 
            } ,  { 
                key: 8
                value:  { 
                    numberEnrolled: 0
                    weeks: 8
                    year: 2011
                } 
            }  
            ]
        } 
    } 
 } 

我正在尝试将每个键的 numberEnrolled 值放入一列中。所以在我的 html 中，我有以下内容

<table class="table table-striped table-bordered">
            <tr ng-repeat="course in enrolledcourses.enrolledEnrolment">
                <td>                                
                    {{course.country}}
                </td>   
                <td>
                    {{course.numberEnrolledPerMonthPerWeek[2].numberEnrolled}}
                </td>               
            </tr>   
        </table>

{{course.numberEnrolledPerMonthPerWeek[2].numberEnrolled}} 不会返回任何值，所以任何人都可以建议获取 numberEnrolled 值的正确语法是什么。

我试过了

{{course.numberEnrolledPerMonthPerWeek.2.numberEnrolled}}
{{course.numberEnrolledPerMonthPerWeek[2][numberEnrolled]}}

我的 Controller 代码如下

.controller('PeopleCtrl', function($scope, recruitmentFactory) {
    $scope.enrolledcourses = recruitmentFactory.get();


    $scope.test = "hello";
    $scope.save = function() {
        alert("save has been called");
    };
})

Answer 1

首先，你的 JSON 有很多错误。也许这只是你得到的输出，但以防万一:
缺少逗号， Test 是一个符号，但我想它是一个字符串。

$scope.enrolledcourses = {
    course : {
    country: 'Test1',
    numberEnrolledPerMonthPerWeek: {
        entry: [{
            key: 2,
            value: {
                numberEnrolled: 0,
                weeks: 2,
                year: 2011,
            }
        }, {
            key: 3,
            value: {
                numberEnrolled: 4,
                weeks: 3,
                year: 2011
            }
        }, {
            key: 4,
            value: {
                numberEnrolled: 6,
                weeks: 4,
                year: 2011
            }
        }, {
            key: 8,
            value: {
                numberEnrolled: 0,
                weeks: 8,
                year: 2011
            }
        }]
    }
    }
};

那么您的 html 需要访问正确的属性:

    <tr ng-repeat="course in enrolledcourses">
        <td>{{course.country}}</td>
        <td>{{course.numberEnrolledPerMonthPerWeek.entry[2].value.numberEnrolled}}</td>
    </tr>

这是一个 live example