AngularJS使用的DataService breezejs它没有解决的承诺 [英] AngularJS dataservice using breezejs it not resolving the promise

问题描述

我想建立一个数据服务正在使用breezeJS我的角度应用。我解决我的诺言之后，我不能让我的控制器以文件的。那么。我在我的数据业务通过微风获取数据从我的数据库了。我可以传回微风希望，但是我希望能够使用$ q.all知道什么时候我所有的数据已被找到。

I'm trying to setup a data service in my Angular application that is using breezeJS. After I resolve my promise I can't get the .then to file in my controller. I am getting data back from my database via breeze in my data service. I could just pass back the breeze promise but I want to be able to use $q.all to know when all my data has been found.

在我controller`

In my controller`

ProApp.controller（'caseInfoController'，
             功能caseInfoController（$范围，$日志$超时，caseDataService）{

ProApp.controller('caseInfoController', function caseInfoController($scope, $log, $timeout, caseDataService) {

    /***initialize data ***/
   // initializeApp();


    ATPinitializeApp();


    function ATPinitializeApp() {

        $scope.MyStateList=   caseDataService.getAllStates()
         .then(function assignStates(data) {
             $log.info("THIS THEN WILL NOT FIRE");               
         });

    }

`

以上，然后，将不会触发时从数据服务的承诺得到满足。

The above then will not fire when the promise from the data service is fulfilled.

ProApp.factory('caseDataService', function ($log, $q)
{

breeze.config.initializeAdapterInstance("modelLibrary", "backingStore", true);


var servicename = "http://localhost:60882/breeze/SPLBreeze";
var manager = new breeze.EntityManager(servicename);

var caseDataService =
{
   getAllStates: getAllStates,

};

return caseDataService;

/*** implementation details ***/


function getAllStates()
{

  var myStatePromise = $q.defer();

  var query = breeze.EntityQuery
      .from("state");

  manager.executeQuery(query)
    .then(function (data) {
        $timeout(function () { myStatePromise.resolve(data); }, 200);;
    });

  return myStatePromise.promise;
};

任何帮助将大大AP preciated。我敢肯定不是100％，如果我有$ Q承诺正确设置。最后，我想用一个$ q.all，以确定各种承诺的阵列已经被解决，这样我就可以更新信息给用户。我一直在读，我需要使用超时来获得角度认识到，改变在未来的事件循环发生。

Any help would be greatly appreciated. I'm not 100% sure if I have the $q promises set up correctly. Eventually I would like to use a $q.all to determine when an array of various promises have been resolved to so I can update a message to the user. I've been reading that I need to use a timeout to get angular to realize that a change has happened in the next event loop.

推荐答案

您正在盯着一个角度$ Q错误的桶。你可以阅读一下在这里，如果你想。

You're staring down the barrel of an Angular $q bug. You can read about it here if you wish.

这将不利于远远不如按照<一的建议href=\"http://stackoverflow.com/questions/17724519/resolving-breeze-query-q-promise-with-route-resolve-stops-page/17733185#17733185\">my回答这个StackOverflow的相关问题 我在其中显示和说明适配器从Q.js承诺到$ Q承诺就搞定了。

That won't help nearly as much as following the advice in my answer to this related StackOverflow question in which I show and describe an adapter to get from Q.js promise to a $q promise.

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