将视频上传到谷歌应用引擎blobstore [英] Uploading a video to google app engine blobstore

问题描述

我试图将视频文件与一组属性相关联，但似乎无法让用户以一种形式完成所有操作 - 命名视频，提供说明并回答一些问题，并上传

以下是我想要执行的步骤： >用户将获得一个页面，该页面包含一个包含以下字段的表单：名称，描述，文件选择器。

文件被存储为一个blob，并且id会与名称和描述一起记录。

有没有人有这样做的例子，我可以从中学习或者可以指点我的教程？

感谢并抱歉发表一个新问题！

解决方案

这里是我用来上传图片并将它们与文章关联的代码。最棘手的是获取文章ID到达上传处理程序，我通过将文件名设置为文章ID来解决该问题。

  from lib从lib.urllib2_file导入urllib2_file 
 import UploadFile 
 
此视图提供队列中的任务
 def article（request）：
 article = Article.objects.get（id = form.cleaned_data ['article']）
 
 try：
 image = StringIO（urllib2.urlopen（image_url）.read（）） 
 except（urllib2.HTTPError，DownloadError）：
 article.parsed = True 
 article.save（）
 else：
 image = UploadFile（image，'。' .join（[str（article.id），image_url.rsplit（'。'，1）[1] [：4]]））
 upload_url = blobstore.create_upload_url（reverse（'Articles.views.upload' ））
 
尝试：
 urllib2.urlopen（upload_url，{'file'：image}）
除了（DownloadError，Requ （$ status）：
 pass 
 
 return HttpResponse（json.dumps（{'status'：'OK'}））
 
 def upload（request）：
 if request.method =='POST'：
 blobs = get_uploads（request，field_name ='file'，populate_post = True）
 $ b $ article = Article.objects.get（id = int（blobs [0] .filename.split（'。'）[0]））
 article.media = blobs [0] .filename 
 article.parsed = True 
 article.save （）
 
 return HttpResponseRedirect（reverse（'Articles.views.upload'））
 else：
 return HttpResponse（'meow'）
 
 def上传（请求）：
 if request.method =='POST'：
 blobs = get_uploads（request，field_name ='file'，populate_post = True）
 $ b $ article = Article .objects.get（id = int（blobs [0] .filename.split（'。'）[0]））
 article.media = blobs [0] .filename 
 article.parsed = True 
 article.save（）
 
 return HttpResponseRedirect（reverse（'Articles.views.upload'））
 else：
 return HttpResponse（'meow'）
 
＃这个服务的图像
 def image（request）：
 blob = BlobInfo.gql（WHERE filename ='％s'LIMIT 1％request.form.cleaned_data ['id']） [0] 
 
 return HttpResponse（BlobReader（blob.key（））。read（），
 content_type = blob.content_type）
  pre> 
 
 
您还需要 http ：//fabien.seisen.org/python/urllib2_file/  
 
I'm trying to associate a video file to a record with a bunch of properties, but can't seem to allow the user to do everything in one form - name the video, provide description and answer some question, AND upload the file.

Here are the steps I'd like to perform:

User is served with a page containing a form with the following fields: Name, Description, File selector.
The file gets stored as a blob and the id gets recorded together with name and description.
Does anyone have any examples of doing this I could learn from or a tutorial you could point me to? The one from google only shows uploading the file and getting redirected to it.

Thanks and sorry for a newbish question!
解决方案
Here's the code I'm using to upload images and associate them with articles. The toughest bit was getting the article id to get to the upload handler, I solved it by setting the file name as the article id to get around the problem.
from lib import urllib2_file
from lib.urllib2_file import UploadFile

# this view serves a task in a queue
def article(request):
       article = Article.objects.get(id=form.cleaned_data['article'])

       try:
            image = StringIO(urllib2.urlopen(image_url).read())
        except (urllib2.HTTPError, DownloadError):
            article.parsed = True
            article.save()
        else:
            image = UploadFile(image, '.'.join([str(article.id), image_url.rsplit('.', 1)[1][:4]]))
            upload_url = blobstore.create_upload_url(reverse('Articles.views.upload'))

            try:
                urllib2.urlopen(upload_url, {'file': image})
            except (DownloadError, RequestTooLargeError):
                pass

    return HttpResponse(json.dumps({'status': 'OK'}))

def upload(request):
    if request.method == 'POST':
        blobs = get_uploads(request, field_name='file', populate_post=True)

        article = Article.objects.get(id=int(blobs[0].filename.split('.')[0]))
        article.media = blobs[0].filename
        article.parsed = True
        article.save()

        return HttpResponseRedirect(reverse('Articles.views.upload'))
    else:
        return HttpResponse('meow')

    def upload(request):
        if request.method == 'POST':
            blobs = get_uploads(request, field_name='file', populate_post=True)

            article = Article.objects.get(id=int(blobs[0].filename.split('.')[0]))
            article.media = blobs[0].filename
            article.parsed = True
            article.save()

            return HttpResponseRedirect(reverse('Articles.views.upload'))
        else:
            return HttpResponse('meow')

# this serves the image
def image(request):
    blob = BlobInfo.gql("WHERE filename='%s' LIMIT 1" % request.form.cleaned_data['id'])[0]

    return HttpResponse(BlobReader(blob.key()).read(),
                        content_type=blob.content_type)
Also you'll need this http://fabien.seisen.org/python/urllib2_file/

                        
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