How to write an angularJs Controller to GET Rest Data from Parse.com

Question

See solution below:

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

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 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");
            });
    };
}

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.

SOLUTION:

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:

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");
            });
    };

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

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>

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.

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

Answer 1

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");
            })
        }
    }

Answer 2

Just a little update to the newer versions of Angular (using .then since version 1.5):

myApp.controller('MyController', function($scope, $http) {

  $scope.items = []

  $http({
     method: 'GET',
     url: 'https://api.parse.com/1/classes/Users',
     headers: {'X-Parse-Application-Id':'XXXXXXXXXXXXX', 'X-Parse-REST-API-Key':'YYYYYYYYYYYYY'}
  })
    .then(function successCallback(response) {
        alert("Succesfully connected to the API");
        $scope.items = data;
    }, function errorCallback(response) {
        alert("Error connecting to API");
    }); 

});