無法從控制器內的服務中獲取值

Question

我只想在控制器「數據控制器」中獲取影片變量的值。下面是我對app.js代碼片段：

myApp.service('datatransfer', ['$http', function($http) 
     { 
      var service = this; 
      var movies; 
      service.getMovies = function() 
      { 
       $http.get('https://api.myjson.com/bins/54jf7').success(function(data) 
       { 
        movies = data; 
       }); 
       return movies; 
      }; 
     }]); 

     myApp.controller('DataController', ['$scope', '$http', '$location', 'datatransfer', function($scope, $http, $location, datatransfer) 
      { 
       $scope.loaded = false; 
       datatransfer.getMovies().then(function(data) 
       { 
        $scope.movies = data; 
        $scope.loaded = true; 
       }); 
       $location.path('/home'); 
      }]); 

從服務「數據傳遞」，它返回影片的正確值，但是當服務被注入控制器和getMovies（）被使用，那麼它給低於錯誤。它無法佔用getMovies（）返回的值。

angular.js:13642 TypeError: Cannot read property 'then' of undefined 
    at new <anonymous> (app.js:47) 
    at Object.invoke (angular.js:4708) 
    at P.instance (angular.js:10177) 
    at n (angular.js:9096) 
    at g (angular.js:8459) 
    at g (angular.js:8462) 
    at angular.js:8339 
    at angular.js:1782 
    at m.$eval (angular.js:17378) 
    at m.$apply (angular.js:17478) 

在此先感謝。

Answer 1

單從服務中使用then

datatransfer.getMovies().then(function(response) { 
    $scope.movies = response.data; 
    $scope.loaded = true; 
});