What is the process for including a scope in an Angular.js HTTP controller?

I am looking to access a $scope variable within this controller in order to utilize Angular functions like ng-click and ng-change in my HTML. Currently, I am only able to use the $http function but unable to execute any Angular methods on it. I am struggling to find a way to implement a $scope in this particular controller.

app.controller('songController', ['$http', function($http) {

    $songs = this;
    $songs.tracks = [];

    $http({
            url: "http://api.q-music.be/1.2/tracks/plays?limit=20",
            dataType: "jsonp",
            jsonp: "callback"
        })
        .success(function(lastSongsList) {
            $songs.tracks = lastSongsList.played_tracks;
            console.log($songs.tracks);

        });


}]);

I wish to be able to perform actions in this controller such as:

$scope.change = function() {
        $scope.counter++;
      };

Answer №1

Ensure to properly include your scope dependency in the following manner:

app.controller('playlistController', ['$http', '$scope', function($http, $scope) {

Answer №2

To update your controller definition, make sure it looks like this:

app.controller('musicController', ['$http', '$scope', function($http, $scope) {

Just like you injected $http into your controller, you also need to inject $scope in order for your controller to access it.

Take some time to research dependency injection; there's a lot of valuable information out there. Understanding how it works is crucial if you're going to be working with Angular.

Answer №3

$tracks = this;
$tracks.allTracks = [];

It should also look like this:

$scope.tracks = this;
$scope.tracks.allTracks = [];

The same goes for the $http success function:

$tracks.allTracks = recentTracksList.current_tracks;

It needs to be changed to:

$scope.tracks.allTracks = recentTracksList.current_tracks;

You can keep the change function in the controller as it is:

$scope.change = function() {
        $scope.counter++;
      };

Then in your HTML, for example with a button input, you can use ng-click="change()"

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