在谷歌应用程序引擎中使用django Nonl上传和保存文件？

根据django关于上传的官方文档，小文件保存到内存，大文件保存到磁盘

我想知道如何将上传的文件保存到磁盘？可能吗

这是到目前为止我的代码。但它只对记忆有效。当我试图将文件写入磁盘，或文件太大时，应用程序崩溃

视图.py

# ...
def spreadsheet_form(request, id = None):
    if is_admin_user(request):
        instance = get_object_or_404(Spreadsheet, id=id) if id is not None else None
        form = SpreadsheetForm(request.POST or None, request.FILES or None, instance=instance)
        if form.is_valid():
            spreadsheet = form.save(commit=False)
            spreadsheet.name = request.POST['name']
            spreadsheet.spreadsheet_file = request.FILES['spreadsheet_file'].name
            spreadsheet.size = request.FILES['spreadsheet_file'].size
            spreadsheet.save()
            handle_uploaded_file(request.FILES['spreadsheet_file'])
            return redirect('/spreadsheets/')
        return render_to_response("pages/spreadsheet_form.html", {"form": form,"id":id},context_instance=RequestContext(request))
    else:
        return redirect('/', False)
# ...
def handle_uploaded_file(f):
    with open(f.name, 'wb+') as destination:
        for chunk in f.chunks():
            destination.write(chunk)

# ...
class Spreadsheet(models.Model):
    id = models.AutoField(primary_key=True)
    name = models.CharField(max_length=256)
    spreadsheet_file = models.FileField(upload_to='spreadsheets/')
    size = models.CharField(max_length=32)
    created_at = models.DateTimeField(auto_now=True)
    # ...
    def __unicode__(self):
        return u'%s' % (self.name )

FILE_UPLOAD_HANDLERS = (
    "django.core.files.uploadhandler.MemoryFileUploadHandler",
    "django.core.files.uploadhandler.TemporaryFileUploadHandler",
)
FILE_UPLOAD_MAX_MEMORY_SIZE = 7000000
FILE_UPLOAD_TEMP_DIR = '/tmp'

型号.py

# ...
def spreadsheet_form(request, id = None):
    if is_admin_user(request):
        instance = get_object_or_404(Spreadsheet, id=id) if id is not None else None
        form = SpreadsheetForm(request.POST or None, request.FILES or None, instance=instance)
        if form.is_valid():
            spreadsheet = form.save(commit=False)
            spreadsheet.name = request.POST['name']
            spreadsheet.spreadsheet_file = request.FILES['spreadsheet_file'].name
            spreadsheet.size = request.FILES['spreadsheet_file'].size
            spreadsheet.save()
            handle_uploaded_file(request.FILES['spreadsheet_file'])
            return redirect('/spreadsheets/')
        return render_to_response("pages/spreadsheet_form.html", {"form": form,"id":id},context_instance=RequestContext(request))
    else:
        return redirect('/', False)
# ...
def handle_uploaded_file(f):
    with open(f.name, 'wb+') as destination:
        for chunk in f.chunks():
            destination.write(chunk)

# ...
class Spreadsheet(models.Model):
    id = models.AutoField(primary_key=True)
    name = models.CharField(max_length=256)
    spreadsheet_file = models.FileField(upload_to='spreadsheets/')
    size = models.CharField(max_length=32)
    created_at = models.DateTimeField(auto_now=True)
    # ...
    def __unicode__(self):
        return u'%s' % (self.name )

FILE_UPLOAD_HANDLERS = (
    "django.core.files.uploadhandler.MemoryFileUploadHandler",
    "django.core.files.uploadhandler.TemporaryFileUploadHandler",
)
FILE_UPLOAD_MAX_MEMORY_SIZE = 7000000
FILE_UPLOAD_TEMP_DIR = '/tmp'

设置.py

# ...
def spreadsheet_form(request, id = None):
    if is_admin_user(request):
        instance = get_object_or_404(Spreadsheet, id=id) if id is not None else None
        form = SpreadsheetForm(request.POST or None, request.FILES or None, instance=instance)
        if form.is_valid():
            spreadsheet = form.save(commit=False)
            spreadsheet.name = request.POST['name']
            spreadsheet.spreadsheet_file = request.FILES['spreadsheet_file'].name
            spreadsheet.size = request.FILES['spreadsheet_file'].size
            spreadsheet.save()
            handle_uploaded_file(request.FILES['spreadsheet_file'])
            return redirect('/spreadsheets/')
        return render_to_response("pages/spreadsheet_form.html", {"form": form,"id":id},context_instance=RequestContext(request))
    else:
        return redirect('/', False)
# ...
def handle_uploaded_file(f):
    with open(f.name, 'wb+') as destination:
        for chunk in f.chunks():
            destination.write(chunk)

# ...
class Spreadsheet(models.Model):
    id = models.AutoField(primary_key=True)
    name = models.CharField(max_length=256)
    spreadsheet_file = models.FileField(upload_to='spreadsheets/')
    size = models.CharField(max_length=32)
    created_at = models.DateTimeField(auto_now=True)
    # ...
    def __unicode__(self):
        return u'%s' % (self.name )

FILE_UPLOAD_HANDLERS = (
    "django.core.files.uploadhandler.MemoryFileUploadHandler",
    "django.core.files.uploadhandler.TemporaryFileUploadHandler",
)
FILE_UPLOAD_MAX_MEMORY_SIZE = 7000000
FILE_UPLOAD_TEMP_DIR = '/tmp'

---

提前感谢

在应用程序引擎世界中没有“保存到磁盘”这样的东西。最近的是Blobstore，现在是地面军事系统

django Nonl包含一个django存储类，用于上载到Blobstore。遵循以下步骤：

---

您不需要摆弄文件上传处理程序，默认设置很好。

谢谢您提供的信息。我还发现了这个有用的文档：看起来数据存储不是保存文件的最佳选择。可能必须通过blobstore或其他外部位置完成。例如：AWS S3