Question

嗨，我是棱角分明的新手，只是想学习如何做一些事情。我一直试图显示以下数据。使用chrome的Batarang插件我可以看到我的restful webservice返回包含在我的模型中的以下json。

    { 
    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值输出到列中。所以在我的HTML中我有以下

<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}}没有给我任何值，所以任何人都可以告诉我们获取numberEnrolled值的正确语法是什么。

我试过了

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

我的控制器代码如下

.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:: 缺少逗号而Test是一个符号，但我猜它是一个字符串。

$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
            }
        }]
    }
    }
};

然后你的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live example

Answer 2

只是为了提供一些额外的帮助：我通过弄清楚如何浏览JSON数据来解决这个问题。尝试使用可视化工具，并验证您的JSON以确保其正确。

以下是我用来可视化数据的内容： http://jsonviewer.stack.hu/ 验证在这里： http://jsonlint.com/

Answer 3

numberEnrolledPerMonthPerWeek[2] is not your array

尝试

numberEnrolledPerMonthPerWeek.entry[2]

Answer 4

好的，所以我做了以下工作以获得价值

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

使用Angular从键值数组中获取JSON值

4 个答案: