Empty file exception when uploading via Django Rest Frameowk

Ryan McFall

January 15, 2021 00:13

I have a Django model with an ImageFileField attribute.  I have successfully uploaded images using the Django admin and had those images uploaded to Cloudinary, using this setting in my Django settings.py file.

DEFAULT_FILE_STORAGE = 'cloudinary_storage.storage.MediaCloudinaryStorage'

I'm now trying to replace the Django admin and use the Django Rest Framework to manipulate files.  I have the following code in my view, where menu_item is my Django model object, and picture is the ImageFileField attribute.

def update_menu_item_picture_from_url(self, menu_item, url):
   with NamedTemporaryFile(delete=False) as img_temp:
       print (img_temp.name)
       img_temp.write(urlopen(url).read())
       img_temp.flush()
       menu_item.picture.save(f"{menu_item.name}.jpg", img_temp)   

When this code is run, I get:

File "/home/ryan/recipes/lib/python3.6/site-packages/django/core/files/storage.py", line 52, in save
    return self._save(name, content)
  File "/home/ryan/recipes/lib/python3.6/site-packages/cloudinary_storage/storage.py", line 68, in _save
    response = self._upload(name, content)
  File "/home/ryan/recipes/lib/python3.6/site-packages/cloudinary_storage/storage.py", line 62, in _upload
    return cloudinary.uploader.upload(content, **options)
  File "/home/ryan/recipes/lib/python3.6/site-packages/cloudinary/uploader.py", line 46, in upload
    return call_cacheable_api("upload", params, file=file, **options)
  File "/home/ryan/recipes/lib/python3.6/site-packages/cloudinary/uploader.py", line 341, in call_cacheable_api
    result = call_api(action, params, http_headers, return_error, unsigned, file, timeout, **options)
  File "/home/ryan/recipes/lib/python3.6/site-packages/cloudinary/uploader.py", line 421, in call_api
    raise Error(result["error"]["message"])
cloudinary.exceptions.Error: Empty file

If I replace the Cloudinary storage system with the default Django file-system based storage in settings.py, it works correctly.

 

Since the temporary file is not set to be deleted, I see it in the file system after the above method runs.  It is complete and Windows opens it as an image file without a problem.

 

Any ideas on what's wrong here?

 

0

• 

  Mo Ip

  January 15, 2021 22:29

  Hi Ryan,

  Would you kindly create a ticket providing your cloud name so I can investigate further?

  Regards,

  Mo

  0
• 

  Ryan McFall

  January 16, 2021 11:40

  I have created ticket #140365 that references this issue.

  Thanks!

  Ryan

  0
• 

  Slawa Gladkov

  May 27, 2021 18:43

  Hi there,

  I am facing exactly the same problem with Django, and I use the same methodology  - I create a temporary file, write it on disk, and save to the ImageField. If I work locally - all works fine, but as soon as I turn on CloudinaryStorage I get the same error message that file is empty.

   

  Is there any update on this topic?

  Regards,

  Slawa

  0

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