我无法访问asp.net mvc控制器以使用$ resource of angular向我返回JsonResult

Question

What am I missing ? I am new to Angularjs. Trying angularjs with asp.net mvc. I am unable to access an asp.net mvc controller to return me a JsonResult using $resource of angular. However, I get success otherwise using $.getJson of javascript but not using angularjs. What am I missing ? please guide. Thank you for replying any.

Following is my Service

EbsMvcApp.factory('classListService', function ($resource, $q)
{
    var resource = $resource
                    (
                      '/Home/ClassList' 
                      , {}
                     //{ method: 'Get', q: '*' }, // Query parameters
                       , { 'query': { method: 'GET' , isArray:false  } }
                    );

    function get($q)
    {
        console.log('Service: classListServic > Started');

        var Defered = $q.defer();

        resource.get
            (
                 function (dataCb)
                 {
                     console.log('success in http service call');
                     Defered.resolve(dataCb);
                 }
                , function (dataCb)
                {
                    console.log('error in http service')
                    Defered.reject(dataCb);
                }
            );
        return Defered.promise; // if missed, would throw an error on func: then.
    };
    return { get: get };
});

angular Controller:

var EbsMvcApp = angular.module('myApp', ['ngResource']);

//'classListService',
EbsMvcApp.controller
    (
        'myAppController',
        ['$scope','classListService','$q' , function ($scope, classListService, $q)
            {
                    console.log('controller myAppController started');

                    var classList = classListService.get($q);
                   classList =  classList.then( 

                        function ()
                        {
                            (
                            function (response)
                            {
                                console.log('class list function response requested');
                                return response.data;
                            }
                        );
                       }
                    );

                   console.log(classList.ClassName);
                   console.log(classList);

                    console.log('end part of ctrl');
                    $scope.classList = classList;
                    $scope.SelectedClassID = 0;
                    $scope.message = ' message from Controller ';

            }
        ]
    );

Asp.net MVC Controller

namespace EBS_MVC.Controllers
    {
        public class HomeController : BaseController
        {
            ApplicationDbContext db = new ApplicationDbContext();

                public JsonResult ClassList()
            {
                var List = new SelectList(db.tblClass, "ID", "ClassName");

                return Json(List, JsonRequestBehavior.AllowGet);
            }
       }
    } 

Brower's response (F12):

ControllerTry1.js:11 controller myAppController started serviceGetClassList.js:16 Service: classListServic > Started ControllerTry1.js:28 undefined ControllerTry1.js:29 c ControllerTry1.js:31 end part of ctrl angular.js:12520 Error: [$resource:badcfg] [Browers response: screen shot][1]

Answer 1

Oky, finally, I got a solution using the $http service. from here

http://www.infragistics.com/community/blogs/dhananjay_kumar/archive/2015/05/13/how-to-use-angularjs-in-asp-net-mvc-and-entity-framework-4.aspx

in csHtml file, a reference to the service.js and Controler.js is required. I am not sure if I have added it earlier or later now. but its required.

ng-Controller:

    EbsMvcApp.controller('ClassListController', function ($scope, ClassListService2) {    

            console.log('ClassListController Started');

            GetClassList();

            function GetClassList()
            {
                ClassListService2.GetJson()
                        .success(function (dataCallBack) {
                            $scope.classList = dataCallBack;
                            console.log($scope.classList);
                        })
                        .error(function (error) {
                            $scope.status = 'Unable to load data: ' + error.message;
                            console.log($scope.status);
                        });
            }
        });

ng-Service:

    EbsMvcApp.factory('ClassListService2', ['$http', function ($http) {


    console.log('ClassListService2 Started');

    var list = {};
    list.GetJson = function () {
        return $http.get('/Home/ClassList');
    };
    return list;

}]);

csHtml View:

    <div class="text-info" ng-controller="ClassListController">
<h3> Text from Controller: </h3>

@*table*@
<table class="table table-striped table-bordered">
    <thead>
        <tr><th>DisplayName</th><th>Value</th>
    </thead>
    <tbody>
        <tr ng-hide="classList.length">
            <td colspan="3" class="text-center">No Data</td>
        </tr>
        <tr ng-repeat="item in classList">
            <td>{{item.Text}}</td>
            <td>{{item.Value}}</td>

        </tr>
    </tbody>
</table>

Answer 2

Sorry for the delay, I just wrote up some code to quickly test the ngResource module as I haven't used it yet.

I've got the code working to do what you want using the ngResource module. I think part of the problem was that you was configuring the query method but calling the get method so your configurations was not applied.

Here is the service class that I wrote to test against a controller the same as yours.

(function () {
    'use strict';

    angular
        .module('myApp')
        .service('classService', ClassService);

    ClassService.$inject = ['$resource', '$q'];

    function ClassService($resource, $q) {

        var resource = $resource
        (
            '/Home/ClassList',
            {},
            {
                'get': { method: 'GET', isArray: true },
                'query': { method: 'GET', isArray: true }
            }
        );

        var service = {
            get: get
        };

        return service;

        ////////////

        function get() {
            var Defered = $q.defer();

            resource.get(function (dataCb) {
                console.log('success in http service call');
                Defered.resolve(dataCb);
            }, function (dataCb) {
                console.log('error in http service')
                Defered.reject(dataCb);
            });

            return Defered.promise;
        };
    };
})();

The controller looks like this

(function () {
    'use strict';

    angular
        .module('myApp')
        .controller('classController', ClassController);

    ClassController.$inject = ['$scope', 'classService'];

    function ClassController($scope, classService) {

        var vm = this;
        vm.data = null;

        activate();

        /////////////

        function activate() {

            var classList = classService.get().then(function (response) {
                console.log('class list function response requested');
                vm.data = response;
                console.log(vm.data);
            });

            console.log('end part of ctrl');
            $scope.SelectedClassID = 0;
            $scope.message = ' message from Controller ';
        };

    };
})();

I've included some of your original code just so you can see how it would fit in.

Glad to see you have got it working though!