class LikeToggleView(AjaxResponseMixin, JSONResponseMixin, FormView):

    http_method_names = ('post', )
    form_class = LikeForm
    product = None
    success_url = '/thanks/'
    template_name = 'products/product_detail.html'


    @csrf_exempt
    def dispatch(self, request, *args, **kwargs):
        product_id = kwargs['product_pk']
        try:
            self.product = Product.objects.get(id=product_id)
        except Product.DoesNotExist:
            raise Http404()
        return super().dispatch(request, *args, **kwargs)


urlpatterns = [
    path('', views.CategoryListView.as_view(), name='category_list'),
    url(r'^cart/$', views.CartView.as_view(), name='cart'),
    url(r'^(?P<product_pk>[0-9]+)/like/$', views.LikeToggleView.as_view(), name='like_toggle'),
    url(r'^(?P<product_pk>[0-9]+)/add/to/cart/$', views.AddToCartView.as_view(), name='add_to_cart'),
    url(r'^(?P<category_slug>.+)/(?P<product_slug>.+)/$', views.ProductDetailView.as_view(), name='product_detail'),
    url(r'^(?P<category_slug>.+)/$', views.CategoryDetailView.as_view(), name='category_detail'),
    url(r'^(?P<category_slug>.+)/$', views.CategoryListView.as_view(), name='category_list'),


]



class LikeForm(forms.Form):
    user = forms.ModelChoiceField(User.objects.all(), required=False)
    product = forms.ModelChoiceField(Product.objects.all())
    ip = forms.GenericIPAddressField(required=False)



<form method="post"  action="{% url 'products:like_toggle' product.id %} ">
    {% csrf_token %}
     {{ form }}
    <input type="submit" value="Submit">
</form>