Can I slow down Django

Question

Simple question really

./manage.py runserver

Can I slow down localhost:8000 on my development machine so I can simulate file uploa

Answer 1

Use the slow file upload handler from django-gubbins:

import time
from django.core.files.uploadhandler import FileUploadHandler

class SlowFileUploadHandler(FileUploadHandler):
    """
    This is an implementation of the Django file upload handler which will
    sleep between processing chunks in order to simulate a slow upload. This
    is intended for development when creating features such as an AJAXy
    file upload progress bar, as uploading to a local process is often too
    quick.
    """
    def receive_data_chunk(self, raw_data, start):
        time.sleep(2)
        return raw_data

    def file_complete(self, file_size):
        return None

You can either enable this globally, by adding it to:

FILE_UPLOAD_HANDLERS = (
    "myapp.files.SlowFileUploadHandler",
    "django.core.files.uploadhandler.MemoryFileUploadHandler",
    "django.core.files.uploadhandler.TemporaryFileUploadHandler",
)

Or enable it for a specific request:

request.upload_handlers.insert(0, SlowFileUploadHandler())

Make sure the request is excepted from CSRF checking, as mentioned at https://docs.djangoproject.com/en/dev/topics/http/file-uploads/#id1