$ q.all是在返回前解决 [英] $q.all is resolving before the returns

问题描述

的 $ q.all 无论是其功能之前解决已经解决了。

The $q.all is resolving before either of its functions has resolved.

我上传两个文件使用$阿贾克斯蔚蓝Blob存储（我不能得到$ HTTP工作）：

I'm uploading two files to azure blob storage using $.ajax (I couldn't get $http to work):

 function doPhotos (result, i)
    {
        var d = $q.defer();
        var requestData = new Uint8Array($scope.files[i].postArray);
        $.ajax({
            url: result.photos[i].imageUri,
            type: "PUT",
            data: requestData,
            processData: false,
            beforeSend: function (xhr)
            {
                xhr.setRequestHeader('x-ms-blob-type', 'BlockBlob');
                xhr.setRequestHeader('x-ms-blob-content-type', $scope.files[i].type);
                xhr.setRequestHeader('x-ms-meta-uploadvia', 'CORS Demo');
                xhr.setRequestHeader('Content-Length', requestData.length);
            },
            success: function (data, status)
            {
                d.resolve(data);

            },
            error: function (xhr, desc, err)
            {
                console.log('error uploading photo ' + desc);
                d.resolve(err);


            }
        });
        return d.promise;

    }

这是设置了功能的 $ q.all 并正在呼吁一个 NG-点击

This is the function that sets up the $q.all and is being called on a ng-click:

$scope.createVotation = function () {
        services.photoset.create($scope.model).then(function (result) {
            $scope.model.id = result.id;
            var doPhotosArray= [];
            for (var i in result.photos) {
                doPhotosArray[i] = doPhotos(result, i);    
            }

            $q.all(doPhotosArray).then(function (data)
            {
                // this is being called almost immediately before the photos upload
                $scope.safeApply(function ()
                {
                    $scope.submitting = false;
                    $location.path('/vote/update/' + $scope.model.id);

                });
            });

        });
    }
};

HTML

<button ng-click='createVotation()'>Create</button>

的 q.all-＆GT;然后正在即使第一个 doPhoto 决心调用之前调用。我不知道是否有某些问题使用jQuery的Ajax，但我的理解是 $ q.all 应该等到双方的承诺（在我的案件有2个）进入它的然后之前完成。

The q.all->then is being called before even the first doPhoto resolve is called. I'm not sure if there is some issue with using jQuery's ajax but it is my understanding that $q.all should wait until both promises (in my case there are 2) are fulfilled before entering its then.

作为一个附加的扭曲，这些照片的是正在上传，这样在工作，这是 $ q.all 未等待。

As an added twist, the photos are being uploaded so that is working, it is the $q.all that is not waiting.

推荐答案

做一些研究和思考，从@charlietfl的各种意见后，只有这样我能得到$ q.all正常工作是做分配的功能打电话给一个变量，然后将它推入被传递到q.all数组。

After doing some research and thinking about the various comments from @charlietfl, the only way I could get the $q.all to work properly is do assign the function call to a variable and then push it into the array that is being passed to q.all.

for (var i in result.photos)
{
    var output = doPhotos(result, i);
    doPhotosArray.push(output);
} 

这是我用来参考的各种例子似乎表明，在我原来的问题了code应该工作，但没有。

The various examples that I used for reference seem to indicate that the code in my original question should work but doesn't.

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