def clean_category(self):
    category = self.cleaned_data['category']
    if (category is '0'):
        raise forms.ValidationError('You must choose a category for your item.')
    return category
def clean_category(self):
    category = self.cleaned_data['category']
    if (category is '0'):
        raise forms.ValidationError('You must choose a category for your item.')
    return category