thanks karen..guess I'm overworked -- I was trying out something like
"if self.cleaned_data['avatar'] == ' ' " ....failed to notice that the
ImageField is 'None' if empty...
thanks a bunch..you made my day :-)
-pd.
On Mar 26, 10:07 pm, "Karen Tracey" <[EMAIL PROTECTED]> wrote:
> On Wed, Mar 26, 2008 at 5:15 PM, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
>
> > I'm using an avatar imagefiled in the model and have defined an
> > imagefield in the registration form I'm using for the user to sign up.
> > avatar is not a required field (both in the form as well as in the
> > model)
>
> > I've got validation included in the Registration Form for the uploaded
> > image size:
>
> > def clean_avatar(self):
>
> > size = len(self.cleaned_data['avatar'].content)
> > if size > 500 * 1024:
> > raise forms.ValidationError('Size exceeded allowable
> > limit')
>
> > return self.cleaned_data['avatar']
>
> > All works well if the user does upload an image. If no image is
> > uploaded, I get a
> > "NoneType' object has no attribute 'content' " exception.
>
> > Which I understand why -- because no file has been uploaded and so
> > there is no content attribute present.
>
> > however, I'm not sure how I can first check if a file has been
> > uploaded by user or not..and then have the above clean method be
> > invoked only when a file has been uploaded...if not, skip validating
> > the input.
>
> > any ideas ?
>
> I don't believe you can bypass your clean method in the case where no file
> was uploaded. Rather you should change your clean_avatar function to handle
> the case of no file being uploaded. That is, only do the size check if
> self.cleaned_data['avatar'] is not None.
>
> Karen
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