ModelForms and file uploads

We’ve seen how using form.ImageField on a form can prevent non-images from being uploaded. We’ve also seen how models.ImageField makes it easy to store an image for a model. But we need to be aware that Django does not stop you from setting a non-image file to ImageField. For example, consider a form that has both FileField and ImageField:

class ExampleForm(forms.Form):
    uploaded_file = forms.FileField()
    uploaded_image = forms.ImageField()

In the following view, the form would not validate if the uploaded_image field on the form was not an image, so some data validity is ensured for uploaded data. The following is an example of this:

def view(request):
    form = ExampleForm(request.POST, request.FILES)
    if form.is_valid():
        m = ExampleModel()
        m.file_field...