I'm using the [Django Sitemap Framework](https://docs.djangoproject.com/en/1.10/ref/contrib/sitemaps/)

I've no problem retrieving a list of articles from my DB.

```
class ArticleSitemap(Sitemap):
    def items(self):
        return articles.objects.filter(tagid=1399).order_by('-publisheddate')

```

I now want to accept a query parameter to filter by an inputted tag id ie: 

sitemap.xml?tagid=1000 

I have yet to find an example in the docs or on stack.