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Quick notes - I'm trying to upload random size files to save at datastore using GAE.

Here is basic code:

  • HTML Code

    <iframe name="upload_iframe" src="" style="display:none;"></iframe>
<form method="post" enctype="multipart/form-data" action="/">
  <input type="hidden" name="MAX_FILE_SIZE" value="100000" />
  <input name="data_file" size="30000" type="file" /> <input type="submit" name="submit" value="Upload" />
</form>

  • Python / Django Code

     def upload_files(request):
    if request.method == 'POST':
       logging.info(request.FILES)
       logging.info(request.FILES['data_file'])

    return HttpResponse('File Uploaded Successfully..')

Test scenario :

  • If i try to upload ~1 Mb file, its working fine.. returns File Uploaded Successfully

  • if trying to upload ~2 Mb or more then it raises MultiValueDictKeyError: "Key 'data_file' not found in <MultiValueDict: {}>" :- not able to picked up where am i doing wrong here or using wrong approch..

I referred this SO Question too..but its not working for me.

Please suggest you thought on above..

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Niks Jain
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  • Some tips: Use `{% csrf_protect %}`; get rid of the hidden `MAX_FILE_SIZE` because it is not doing anything useful; and there is no `size` attribute for file input tag. – Burhan Khalid Aug 06 '13 at 08:02
  • @BurhanKhalid: Thanks for your reply.. Could you please elaborate this tips with some example or with use of `{% csrf_protect %}` ? – Niks Jain Aug 06 '13 at 08:43
  • See the [documentation on CSRF](https://docs.djangoproject.com/en/1.5/ref/contrib/csrf/) – Burhan Khalid Aug 06 '13 at 08:55

1 Answers1

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Django loads small file uploads into memory, while saving large uploads temporary to disk. GAE doesn't allow access to the file-system, so you have to incorporate GAE's blobstore as storage engine. Also refer to this question on SO.

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Bouke
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