IntegrityError at /malex/upload/
NOT NULL constraint failed: malex_document.uploaded_by_id
Request Method: POST
Request URL:    http://127.0.0.1:8000/malex/upload/
Django Version: 2.0.5
Exception Type: IntegrityError

class Document(models.Model):
    docfile = models.FileField(upload_to='documents/%Y/%m/%d')
    uploaded_by = models.ForeignKey(Profile,on_delete=models.CASCADE)
    date_uploaded = models.DateTimeField(auto_now_add=True)

class LoginForm(forms.Form):
    username = forms.CharField()
    password = forms.CharField(widget=forms.PasswordInput)

class DocumentForm(forms.Form):
    docfile = forms.FileField(label='Select a file')

def upload(request):
    # Handle file upload
    if request.method == 'POST':
        form = DocumentForm(request.POST, request.FILES)
        if form.is_valid():
            newdoc = Document(docfile=request.FILES['docfile'])
            newdoc.save()

            # Redirect to the document list after POST
            return HttpResponseRedirect(reverse('upload'))
    else:
        form = DocumentForm()  # A empty, unbound form

    # Load documents for the list page
    documents = Document.objects.all()

    # Render list page with the documents and the form
    return render(request,'upload.html',{'documents': documents, 'form': form})

File "/home/milenko/miniconda3/lib/python3.6/site-packages/django/db/backends/utils.py" in _execute
  85.                 return self.cursor.execute(sql, params)

File "/home/milenko/miniconda3/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py" in execute
  303.         return Database.Cursor.execute(self, query, params)

The above exception (NOT NULL constraint failed: malex_document.uploaded_by_id) was the direct cause of the following exception:

File "/home/milenko/miniconda3/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner
  35.             response = get_response(request)

File "/home/milenko/miniconda3/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  128.                 response = self.process_exception_by_middleware(e, request)

File "/home/milenko/miniconda3/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  126.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/home/milenko/nup/malex/views.py" in upload
  38.             newdoc.save()

~/nup/malex/media/documents/2018/06/22$ ls -lh 262_V01_C06_R000_TEy_BH_131072H.ats
-rw------- 1 milenko milenko 46M јун 22 07:22 262_V01_C06_R000_TEy_BH_131072H.ats