models.py
class Product(models.Model): image = models.ImageField(upload_to="/a/b/c/")
forms.py
class ProductForm(forms.ModelForm): # Add some custom validation to our image field def clean_image(self): image = self.cleaned_data.get('image', False) if image: if image._size > 4*1024*1024: raise ValidationError("Image file too large ( > 4mb )") return image else: raise ValidationError("Couldn't read uploaded image")
