是否有可能通过GET响应数据返回到同一个工厂？ [英] Is it possible to pass GET response data back to same factory?

问题描述

从任何控制器，我怎么能叫 GETPAGES 函数，返回的数据返回到控制器，更换空页。 details.ref 与 GET 响应数据对象？

From any controller, how can I call the getPages function, return the data back to the controller and replace the empty Page.details.refobject with the GET response data?

有可能是这一切的工厂内发生的无论哪个控制器调用函数？

app.factory('Pages', function($http, ENV){
    var Pages = {};

    Pages.details = 
    {
        pages: 
            {
                length: 0,
                offsets: []
            },
        ref:  
            {
            //data goes here on success
            },
        getPages: function($scope) {
            return $http.get(ENV.apiEndpoint + '/' + $scope.storeSlug + '/pages.json?code=' + $scope.promoCode)
            .success(function(data){
              // I want this Pages.details.ref to be replaced on success of getPages
              Pages.details.ref = data;
              $scope.handlePagesSuccess(data);

              return data;
            })
            .error(function(data, status){
              // console.log('error:' + status);
            });
        }
    }

    return Pages;
});

控制器：
此控制器调用init要求的

app.controller('RandomCtrl', function($scope, Pages){
   var handleSuccess = function (data) {
      $scope.data = data;
   }
   Pages.details.getPages($scope).success(handleSuccess);
})

控制器＃2：
此控制器只是消耗请求的RandomCtrl之间没有任何关系的一个临时版本。例如该控制器是一个典型的指令级控制器，其中一个孤单父母之间没有冒泡CTRL 的

app.controller('OtherCtrl', function($scope, Pages){
    $scope.tempPage = Pages.details.ref;
})

这件事不应该在那里GETPAGES从调用。我想裁判被替换每次GETPAGES被调用。

it shouldnt matter where getPages is called from. I want ref to be replaced everytime getPages is called.

推荐答案

好像你正试图管理你的工厂，这可能不是一个好主意内部状态。此外，它是不是在工厂绕过 $范围一个好主意。它们应限于它自己的控制器。你可以代替缓存制成，基于一个标志previous叫你既可以返回缓存的承诺或进行实际的服务电话。

It seems like you are trying to manage state inside your factory, which probably is not a good idea. Also it is not a good idea to pass around $scope in factories. They should be limited to its own controller. You could instead cache the promise for the previous call made and based on a flag you could either return the cached promise or make the actual service call.

app.factory('Pages', function($http, ENV, $q){
        var Pages = {};
        var cachedPromise = {};
        Pages.details = 
        {
            pages: 
                {
                    length: 0,
                    offsets: []
                },
            getPages: function(request) {
               //Get a request key to make sure you are returning right promise incase multiple product calls are made at the same time.
               var reqKey = request.storeSlug + request.promoCode;

               //if a call has already been made and there is a promise return it
               if(cachedPromise[reqKey]) return cachedPromise[reqKey];

               //Store the promise in the cache for lastCall retrieval
               return cachedPromise[reqKey] = $http.get(ENV.apiEndpoint + '/' + request.storeSlug + '/pages.json?code=' + request.promoCode)
                .then(function(result){
                    return result.data; //You can alter data and send as well
                }, function(data, status){
                    return $q.reject('some error'); //or return some data
                }).finally(function(){
                   //remove the cache from the map, once promise is resolved.
                   delete cachedPromise[reqKey];
               });

            }
        }
        return Pages;
    });

在你的第一个控制器做到： -

In your first controller do:-

app.controller('RandomCtrl', function($scope, Pages){
   //Build your request.
   Pages.details.getPages(request).then(function (data) {
       $scope.data = data;
    });
});

在你的第二个控制器只是做相同的： -

In your second controller just do the same:-

app.controller('OtherCtrl', function($scope, Pages){
    //Pass the flag to get the cached data.
    Pages.details.getPages(request).then(function (data) {
       $scope.tempPage = data;
    });
});

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