How can I upload and download files with graphene-django?

by

UPLOADS

You don’t need to invent your own frontend code to add a file upload to a mutation — there are existing packages that do this already. For example, apollo-upload-client if you are using Apollo.

To receive an uploaded file on the backend, the files are going to be available in the dictionary request.FILES. So any mutation handling a file upload needs to examine info.context.FILES.items to get and save the file data. The specifics of this code are going to depend on the ultimate destination of the saved file.

(UPDATE) However, if possible I would recommend not using graphene-django to upload files because it adds a large amount of complexity on both the backend and the frontend. My team ultimately scrapped our working graphene-django file upload code and replaced it with a standard Django file upload.

DOWNLOADS

For downloads, I would recommend not using graphQL for the actual download. Instead create a Django function view that returns a HttpResponse or FileResponse and sets the Content-Disposition header. Something like

from django.http import HttpResponse

def download(request):
    ... do stuff to get file contents and file name and mime_type
    response = HttpResponse(file_contents, content_type=mime_type)
    response['Content-Disposition'] = 'attachment; filename="{}"'.format(file_name)
    return response

Then add this download path to your urls.py and to a graphQL query response. So graphQL would be used to get the download path, but actually downloading the file would be a regular Django page.

More Related Contents:

  1. Issue with ManyToMany Relationships not updating immediately after save
  2. Django: Populate user ID when saving a model
  3. How to revert the last migration?
  4. Can django’s auth_user.username be varchar(75)? How could that be done?
  5. Manager isn’t available; User has been swapped for ‘pet.Person’
  6. How do you serialize a model instance in Django?
  7. Django: How do I add arbitrary html attributes to input fields on a form?
  8. Get list item dynamically in django templates
  9. What is the right way to use angular2 http requests with Django CSRF protection?
  10. Django Push HTTP Response to users [closed]
  11. django admin login suddenly demanding csrf token
  12. How to cURL an Authenticated Django App?
  13. Django – filtering on foreign key properties
  14. CSRF with Django, React+Redux using Axios
  15. Django admin: How to display a field that is marked as editable=False’ in the model?
  16. django unit tests without a db
  17. How to force a user logout in Django?
  18. Django unique_together with nullable ForeignKey
  19. Default image for ImageField in Django’s ORM
  20. How to dynamically provide lookup field name in Django query? [duplicate]
  21. Django – Why should I ever use the render_to_response at all?
  22. Django: ManyToMany filter matching on ALL items in a list
  23. Django give Error 500 for all static files like CSS and Images, when DEBUG is False
  24. Django REST Framework image upload
  25. How to iterate over nested dictionaries in django templates
  26. Docker-compose with django could not translate host name “db” to address: Name or service not known
  27. Django on Google App Engine
  28. Django static files on heroku
  29. Django: dynamic database file
  30. User groups and permissions

Leave a Comment