如何编写一个angularJs控制器来从Parse.com获取Rest数据 [英] How to write an angularJs Controller to GET Rest Data from Parse.com

问题描述

请参阅下面的解决方案：

我正在尝试连接到Parse.com Rest后端并显示来自对象值的数据。

I'm trying to connect to a Parse.com Rest backend and display data from object values.

HTML（我放了几个角度调用以确保捕获输出）：

HTML (I put several angular calls to be sure to catch output):

<div ng-controller="MyController">
    <p>{{item}}<p>
    <p>{{items}}<p>
    <p>{{item.firstName}}<p>
    <p>{{data}}<p>

</div>

JAVASCRIPT休息：

JAVASCRIPT rest:

function MyController($scope, $http) {

    $scope.items = [];
    $scope.getItems = function() {

        $http({method : 'GET',url : 'https://api.parse.com/1/classes/Professional/id', headers: { 'X-Parse-Application-Id':'XXXX', 'X-Parse-REST-API-Key':'YYYY'}})
            .success(function(data, status) {
                $scope.items = data;
            })
            .error(function(data, status) {
                alert("Error");
            });
    };
}

这不起作用，它什么都不做，甚至没有留言控制台。
我知道其余的调用获得了正确的凭证，因为当我使用其他测试程序测试它时，我能够获得对象内容。也许URL不应该是绝对的？
任何线索都非常受欢迎，我花了DAYS。

This won't work, it does strictly nothing, not even a message in the console. I know the rest call got the correct credential, as I'm able to get object content returned when I test it with a rest tester program. Maybe the URL should not be absolute ? Any clue is very welcome, i've spent DAYS on that.

解决方案：

感谢在回答这个帖子的人的帮助下，我找到了解决这个问题的方法，所以我只想回馈：

Thanks to the help of people answering this thread, I was able to find the solution to this problem so I just wanted to contribute back:

从Parse.com后端获取Json对象数据，传递它的身份验证参数：

Get Json object data from Parse.com backend, pass it authentification parameters:

function MyController($scope, $http) {

    $scope.items = [];
    $scope.getItems = function() {

        $http({method : 'GET',url : 'https://api.parse.com/1/classes/Professional', headers: { 'X-Parse-Application-Id':'XXX', 'X-Parse-REST-API-Key':'YYY'}})
            .success(function(data, status) {
                $scope.items = data;
            })
            .error(function(data, status) {
                alert("Error");
            });
    };

请注意''必需的arround标头密钥对象值。方法和网址密钥不需要那些'。

Notice that ' ' necessary arround header key object values. Those ' ' are not necessary around method and url keys.

列出每个对象的所有'firstName'的模板：

Template that list all 'firstName' of each object:

<div ng-controller="MyController" ng-init="getItems()">
     <ul>
        <li ng-repeat="item in items.results"> {{item.firstName}} </li>
    </ul>
</div>

注意：item.results中的项目。 results是必需的，因为返回值是一个JSON对象，它包含一个带有列出对象的JSON数组的结果字段。这可以为你节省一些头痛。
另请注意ng-init：如果你没有把它或任何其他形式的调用放到getItem（），那么什么都不会发生，你将不会返回任何错误。

Notice: "item in items.results". "results" is necessary because the return value is a JSON object that contains a results field with a JSON array that lists the objects. This could save you some headache. Also notice "ng-init": if you don't put that, or any other form of call to the getItem(),then nothing will happen and you will be returned no error.

这是我第一次尝试Angularjs，我已经恋爱了^^。

That was my first try of Angularjs, and i'm already in love ^^.

推荐答案

根据您的要求，控制器应为：

Based in your request the controller should be:

HTML

<div ng-controller="MyController">
    <button type="button" ng-click="getItems()">Get Items</button>
    <ul>
       <li ng-repeat="item in items"> item.firstName </li>
    </ul>
</div>

JS

  function MyController($scope, $http) {
        $scope.items = []

        $scope.getItems = function() {
         $http({method : 'GET',url : 'https://api.parse.com/1/classes/Users', headers: { 'X-Parse-Application-Id':'XXXXXXXXXXXXX', 'X-Parse-REST-API-Key':'YYYYYYYYYYYYY'}})
            .success(function(data, status) {
                $scope.items = data;
             })
            .error(function(data, status) {
                alert("Error");
            })
        }
    }

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