Angular.js pass data from async service to scope

Question

I have a service like

app.factory(\'geolocation\', function ($rootScope, cordovaReady) {
    return {
        getCurrentPosition: cordovaReady(function (onSu         


        

Answer 1

You are dealing with callbacks and asynchronous request. So you should use $q service. Just inject it in your service with $rootScope and cordovaReady dependency. And add the promises to your function like this

getCurrentCity: function () {
    var deferred = $q.defer(); 
    this.getCurrentPosition(function (position) {
      var geocoder = new google.maps.Geocoder();
      geocoder.geocode(options,function (results, status) {
        var city = address_component.long_name;
        $rootScope.$apply(function(){
          deferred.resolve(city);
        });
      });
    });
    return deferred.promise;
}

And in your controller, do the following to handle the promise.

function MainCtrl($scope, geolocation) {
   geolocation.getCurrentCity().then(function(result) {  //result === city
     $scope.city = result;
     //do whatever you want. This will be executed once city value is available
   });     
};