使用塊上傳文件：避免保存兩次

Question

我使用自定義函數上傳文件，如文件here所示，將文件分成塊。 我的問題是handle_uploaded_file()上傳我的文件兩次後，調用save()，一個上傳到「MEDIA_URL/my_path」目錄，一個上傳到「MEDIA_URL」。 但我想只有一個上傳，一個大塊。 可以強制save()上傳'chunked'嗎？ 或者我應該使用不同的方法？ 謝謝。

• models.py

  class ShapeFile(models.Model): 
      name = models.CharField(max_length=100) 
      srid = models.ForeignKey(SpatialRefSys) 
      user = models.ForeignKey(User) 
      color_table = models.ForeignKey(ColorTable) 
      file = models.FileField(upload_to="my_path") 
      class Meta: 
       unique_together = ('name', 'user') 
  

• forms.py

  class UploadForm(ModelForm): 
      class Meta: 
       model = ShapeFile 
       fields = ('name','user','srid','file','color_table') 
       widgets = {'srid': TextInput(), 
          'user': HiddenInput() 
  

• views.py

  def handle_uploaded_file(fileName, filePath): 
      with open(filePath, 'wb+') as destination: 
       for chunk in fileName.chunks(): 
        destination.write(chunk) 
  
  @login_required 
  def shapeIng(request): 
      if request.method == 'POST': 
       form = UploadForm(request.POST, request.FILES) 
       if form.is_valid(): 
        req = request.POST 
  
        # Split uploaded file into chunks 
        fileName = request.FILES['file'] 
        filePath = ShapeFile(file=fileName).file.path 
        handle_uploaded_file(fileName, filePath) 
  
        form.save() 
  
        messages.success(request, 'Shapefile upload succesful!') 
        return redirect('shapeCreated') 
       else: 
        messages.error(request, 'Something went wrong uploading Shapefile.') 
      else: # request.method == 'GET' 
       form = UploadForm(initial={'user': request.user}) 
      return render_to_response('my_app/base_shapeIngestion.html', 
             {'form': form}, 
             context_instance=RequestContext(request)) 
  

Answer 1

將您的查看功能更改爲：

def testupload2(request): 
    if request.method == 'POST': 
     file_name=request.FILES['file'] 
    form = SomeForm(request.POST, request.FILES) 
    if form.is_valid(): 
     dest_file = open('C:/prototype/upload/'+ str(file_name), 'wb+') 
     path = 'C:/prototype/upload/'+ str(file_name) 
     for chunk in request.FILES['file'].chunks(): 
      dest_file.write(chunk) 
     dest_file.close() 

    t = get_template("testupload2.html") 

    lst = os.listdir('C:/downloads/prototype/prototype/upload/') 

    html = t.render(Context({'MEDIA_URL':'http://127.0.0.1:8000/site_media/'})) 
    return HttpResponse(html)