深入了解我的http请求将不会在视图中显示所需的数据

Question

所以建立在前一个问题上(Http请求在服务中成功但无法在视图中显示).我需要深入了解我的http请求,为选定的电影进行api调用,如下所示:

http.get('https://api.themoviedb.org/3/movie/'+ movieId + '?api_key=XXX')

我的服务的完整代码:

angular.module('starter.services', [])

.service('HotMoviesService', function($http, $q){
    var movieId;
    var final_url = "https://api.themoviedb.org/3/movie/popular?api_key=XXX";

    var self = {
        'hotMovies' : [],
        'singleHotMovie' : [],
        'loadHotMovies' : function() {
            var d = $q.defer();
            $http.get(final_url)
            .success(function success (data){
                //console.log(data);
                self.hotMovies = data.results;

                for(var i = 0; i < self.hotMovies.length; i++){
                    //console.log(self.hotMovies[i].id);
                    movieId = self.hotMovies[i].id;
                    //console.log("Logging movie id: ", movieId);

                    $http.get('https://api.themoviedb.org/3/movie/'+ movieId + '?api_key=XXXXX')
                    .success(function succcess(response){
                        //console.log("Logging response in the for loop " , response);
                        self.singleHotMovie = response;
                    })
                    .error(function error (msg){
                        console.log(msg);
                    })
                }

                d.resolve('The promise has been fulfilled');
            })
            .error(function error (msg){
                console.error("There was an error retrieving the data " , msg);
                d.reject("The promise was not fulfilled");
            });
            return d.promise;
        }
    };
    return self;
})

我的控制器如下:

.controller('StartCtrl', function($scope, $http, HotMoviesService) {

//POPULAR
    $scope.hotmovies = [];

    HotMoviesService.loadHotMovies().then(function success (data){
        console.log(data);//returns success message saying that promise is fulfilled
        $scope.hotmovies = HotMoviesService.singleHotMovie;
    },
    function error (data){
        console.log(data)//returns error messag saying that promise is not fulfilled
    });
})

HTML代码(电影列表)

<ion-view view-title="The Movie Bank">
  <ion-content class="background">

    <h1 class="padding titleStart">Welcome to The Movie Bank</h1>
    <div class="logo"></div>

    <!-- HOT -->
    <a class="customHref" href="#/app/hot">
        <h1 class="padding customH1">Hot</h1>
    </a>

    <hscroller>
        <ion-scroll direction="x" scrollbar-x="false">
            <hcard ng-repeat="hotmovie in hotmovies"> 
                <a href="#/app/hot/{{hotmovie.id}}">
                    <img ng-src="http://image.tmdb.org/t/p/w92/{{hotmovie.poster_path}}" >
                </a>
            </hcard>
        </ion-scroll>
    </hscroller>

  </ion-content>
</ion-view>

当点击其中一部电影时,它应该转到详细页面(ID显示在网址中),但我似乎无法读出该特定电影的数据.虽然我的所有请求都可以,但在我的控制台中通过.

详情页面的HTML代码:

<ion-view view-title="Hot Detail">
  <ion-content >
    <h1>test</h1>
    <h4>{{original_title}}</h4>
    <img ng-src="http://image.tmdb.org/t/p/w92/{{hotMovie.poster_path}}" >
  </ion-content>
</ion-view>

详细信息页面的屏幕截图:

我究竟做错了什么 ？

Answer 1

显示消息"承诺已经完成",因此您知道第一个请求没有问题,但这并没有告诉您有关moviedetail调用的任何信息.

您输入一个循环以检索所有"热门电影"详细信息.但是,由于在d.resolve第一次调用的成功代码中,承诺在moviedetails调用完成之前得到解决.

我将制作一系列promisses(来自所有细节调用)并用于$q.all(promises);解决所有这些调用何时完成.这样你就知道你的所有数据了.

还有一件事...

您将响应复制到self.singleHotMovie中self.singleHotMovie = response;.这样,只有最后一个要解析的电影细节调用才会出现在self.singleHotMovie中.您可能希望使用self.singleHotMovie.push(response)它将其添加到数组中.

未经测试:

'loadHotMovies' : function() {
        var d = $q.defer();
        $http.get(final_url)
        .success(function success (data){
            //console.log(data);
            self.hotMovies = data.results;

            // create an array to hold the prommisses
            var promisses = [];
            for(var i = 0; i < self.hotMovies.length; i++){

                //console.log(self.hotMovies[i].id);
                movieId = self.hotMovies[i].id;
                //console.log("Logging movie id: ", movieId);

                var promise = $http.get('https://api.themoviedb.org/3/movie/'+ movieId + '?api_key=XXXXX')
                .success(function succcess(response){
                    //console.log("Logging response in the for loop " , response);
                    self.singleHotMovie = response;
                })
                .error(function error (msg){
                    console.log(msg);
                });
                // add all the detail calls to the promise array
                promisses.push(promise);
            }

            //when all the details calls are resolved, resolve the parent promise
            $q.all(promisses).finally(function(){
                d.resolve('The promise has been fulfilled');
            });
        })
        .error(function error (msg){
            console.error("There was an error retrieving the data " , msg);
            d.reject("The promise was not fulfilled");
        });
        return d.promise;
    }