python ./manage.py syncdb                 
python ./manage.py migrate easy_thumbnails
http://localhost:8000/addproduct/

form.instance.submitter = self.request.user
        return super(AddProduct, self).form_valid(form)

form.submitter = self.request.user
        return super(CreateView, self).form_valid(form)

class AddProduct(CreateView):
    model = Product
    form_class = AddproductForm
    def form_valid(self, form):
        form.instance.submitter = self.request.user
        return super(AddProduct, self).form_valid(form)

class AddproductForm(forms.ModelForm):
    class Meta:
        model = Product
        exclude = ['submitter',]

 {{  form.errors }}
<form enctype="multipart/form-data" action="{% url "addproduct" %}" method="post">{% csrf_token %}
{{ form.as_ul }}
    <button type="submit">Add</button>
 </form>
{% endblock %}

python ./manage.py syncdb                 
python ./manage.py migrate easy_thumbnails
http://localhost:8000/addproduct/