AngularJS : returning data from service to controller

iceberg picture iceberg · Aug 21, 2015 · Viewed 44.1k times · Source

I am trying to create a service to get json and pass it to me homeCtrl I can get the data but when a pass it to my homeCtrl it always returns undefined. Im stuck.

My Service:

var myService = angular.module("xo").factory("myService", ['$http', function($http){
  return{
    getResponders: (function(response){
      $http.get('myUrl').then(function(response){
         console.log("coming from servicejs", response.data);
      });
    })()
  };
  return myService;
  }
]);

My Home Controller:

var homeCtrl = angular.module("xo").controller("homeCtrl", ["$rootScope", "$scope", "$http", "myService",
function ($rootScope, $scope, $http, myService) {
 $scope.goData = function(){
     $scope.gotData = myService.getResponders;
 };
 console.log("my service is running", $scope.goData, myService);
}]);

Answer

Pankaj Parkar picture Pankaj Parkar · Aug 21, 2015

You should return promise from getResponders function, & when it gets resolved it should return response.data from that function.

Factory

var myService = angular.module("xo").factory("myService", ['$http', function($http) {
    return {
        getResponders: function() {    
            return $http.get('myUrl')
            .then(function(response) {
                console.log("coming from servicejs", response.data);
                //return data when promise resolved
                //that would help you to continue promise chain.
                return response.data;
            });
        }
    };
}]);

Also inside your controller you should call the factory function and use .then function to get call it when the getResponders service function resolves the $http.get call and assign the data to $scope.gotData

Code

 $scope.goData = function(){
     myService.getResponders.then(function(data){
          $scope.gotData = data;
     });

 };