Question

我将HTTP请求设置为.factory中的承诺，并希望将结果发送给控制器。但是我仍然坚持将数据从承诺中提取出来并进入我可以使用的地方。

.controller

.controller('MainCtrl', function ($scope, Main, User) {
    $scope.feedResult = function () {
        var feeds = [];
        return Main.feed(key).success(function (data, status, headers, config) {
            for (var i = 0; i < data.length; i += 1)
            {
                feeds.push(data[i]);
            }
            return feeds;
        }).error(function (data, status, headers, config) {
            console.log("This was an error back from the server");
            console.log(data);
            return data;
        });
    }();
})

和.factory

        feed: function (token) {
            return $http({
                url: 'http://myserver.com/feed',
                method: 'GET',
                data: {
                    auth_code: token,
                    per_page: 10
                }
            }).success(function (data, status, headers, config) {
                for (var i = 0; i < data.length; i += 1)
                {
                    feeds.push(data[i]);
                }
                return feeds;
            }).error(function (data, status, headers, config) {
                console.log("This was an error back from the server");
                console.log(data);
                return data;
            });
        },

不管我怎么试着把东西放到一个范围内我似乎总是最终得到了promise对象。有人可以帮助我吗？

Answer 1

成功或错误方法将始终返回一个promise（它将您的返回值包装到一个新的promise中）。您应该在成功/错误回调中设置范围上的值：

.controller('MainCtrl', function ($scope, Main, User) {
    $scope.feedResult = [];
    Main.feed(key).success(function (data, status, headers, config) {
        for (var i = 0; i < data.length; i += 1)
        {
             $scope.feedResult.push(data[i]);
        }
    }).error(function (data, status, headers, config) {
        console.log("This was an error back from the server");
        console.log(data);
        $scope.feedResult = data;
    });
})

AngularJS从Promise返回从工厂到控制器的值

1 个答案: