django csv file validation in model form clean method

Following is the FileModel to upload a csv file in my Django application:

class File(models.Model):
  uploaded_by = models.ForeignKey(
    User,
    on_delete=models.CASCADE,
  )
  csv_file = models.FileField(
    upload_to='csvfiles/',
  )

On invocation of the /upload_file url pattern, the upload_csv_file view executes as follows:

 def upload_csv_file(request):
   if request.method == 'POST':
      csv_form = CSVForm(request.POST, request.FILES)
      if csv_form.is_valid():
        file_uploaded = csv_form.save(commit=False)
        file_uploaded.uploaded_by = request.user
        csv_form.save()
        return HttpResponse("<h1>Your csv file was uploaded</h1>")
elif request.method == ‘GET’:

csv_form = CSVForm()

return render(request, ‘./mysite/upload_file.html’, {‘csv_form’: csv_form})

In forms.py I am validating the following:

• file extension (.csv)
• file size (5 mb)

class CSVForm(forms.ModelForm):

class Meta:

model = File

fields = (‘csv_file’,)
def clean_csv_file(self):

uploaded_csv_file = self.cleaned_data[‘csv_file’]
if uploaded_csv_file:

filename = uploaded_csv_file.name

if filename.endswith(settings.FILE_UPLOAD_TYPE):

if uploaded_csv_file.size < int(settings.MAX_UPLOAD_SIZE):

return True

else:

raise forms.ValidationError(

“File size must not exceed 5 MB”)

else:

raise forms.ValidationError(“Please upload .csv extension files only”)
return uploaded_csv_file
def clean(self):

cleaned_data = super(CSVForm, self).clean()

uploaded_csv_file = cleaned_data.get(‘csv_file’)

return uploaded_csv_file

However i encounter the following error on submitting the file upload button:

  Attribute error: ‘bool’ object has no attribute ‘get’

I am unsure whether the ‘def clean_csv_file(self)’ is being invoked or not.

There are ways to validate file extension and size within the function-based view, but I would like to validate the file attributes in the ModelForm’s clean() method itself.

Please suggest a solution to apply the same. Thanks!

#django