class AddproductForm(forms.ModelForm):
    class Meta:
        model = Product
        exclude = ("submitter",)
class AddProduct(CreateView):
    model = Product
    form_class = AddproductForm
    def form_valid(self, form):
        f = form.save(commit=False)
        f.submitter = self.request.user
        f.save()
        return super(CreateView, self).form_valid(form)
    def addimg(request):
        if request.method == "POST":
            form = AddproductForm(request.POST, request.FILES)
            form.save()
    def get_success_url(self):
        return reverse("profile", kwargs={'slug': self.request.user})

class AddProduct(CreateView):
    model = Product
    form_class = AddproductForm
    def form_valid(self, form):
        f = form.save(commit=False)
        f.submitter = self.request.user
        if request == 'POST':
            f = AddproductForm(request.POST, request.FILES)
        f.save()
        return super(CreateView, self).form_valid(form)
    def get_success_url(self):
        return reverse("profile", kwargs={'slug': self.request.user})

class AddproductForm(forms.ModelForm):
    class Meta:
    	model = Product
    	exclude = ['submitter',]
class AddProduct(CreateView):
    model = Product
    form_class = AddproductForm
    # Или
    #fields = ['src', 'name'] и т.д.
    def form_valid(self, form):
        form.instance.submitter = self.request.user
        return super(AddProduct, self).form_valid(form)

url(r'^addproduct/$', AddProduct.as_view(), name='addproduct'),

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

IntegrityError at /addproduct/
products_product.submitter_id may not be NULL