javascript - Angular : Getting Error on adding $scope in factory-service

Question

studentService.js

   app.factory('saveStudentService',['$http','$scope',function ($http,$scope) { 
            var studentData = {};
            studentData.save = function(jsondata){
                var action = "student";
                var method = "POST";
                $http({
                    url: action,
                    method: method,
                    headers: {'Content-Type': 'application/json'},
                    data: jsondata
                }).success(function(data, status, headers, config) {
                    toastr.success(status +' : Data has been submitted successfully ');
                }).error(function(data, status, headers, config) {
                    toastr.error(status + ' : Data has not been submitted successfully ');
                });
            };
            return studentData;
        }]);

我收到这个错误

angular.js:13642Error: [$injector:unpr] http://errors.angularjs.org/1.5.6/$injector/unpr?p0=%24scopeProvider%20%3C-%20%24scope%20%3C-%20saveStudentService
    at Error (native)
    at https://ajax.googleapis.com/ajax/libs/angularjs/1.5.6/angular.min.js:6:412

如果来自 studentService.js，$scope 被删除，即

app.factory('saveStudentService',['$http',function ($http) { 

此代码运行正常，并且在控制台中没有收到任何错误消息。

以下是调用此 studentService 的 studentController.js 文件。

StudentController.js

app.controller('saveStudentCtrl',['$scope', 'saveStudentService', function($scope,saveStudentService) { 
    $scope.submit_create_student = function() {
        var jsondata = $scope.student;
        saveStudentService.save(jsondata);
    }

}]);

但如果在 updateStudentService 中添加了相同的东西，即 $scope，那么这段代码会按预期工作。

app.controller('updateStudentCtrl',['$scope','retriveStudentService', 'updateStudentService', function($scope,retriveStudentService, updateStudentService) {    
    $scope.getStudentDataFromServer = function() {      
        retriveStudentService.get();
    };
    $scope.submit_update_student = function(e) {
        updateStudentService.update();
    }

}]);

有人可以澄清一下，这里发生了什么。虽然可以在一个地方使用相同的东西，但不能在其他地方使用相同的过程。

Answer 1

您不能将作用域注入(inject)服务。您可以将其注入(inject) Controller 。