errors while trying to add extra context (detailview, __getitem__)

File "/home/malikarumi/Projects/cannon/jamf/essell/urls.py", line 23, in <module>

    url(r'^code/(?P<slug>)/', CodeDetailView.as_view(), name='family'),

TypeError: 'function' object has no attribute '__getitem__'

I understand that DetailView does not have __getitem__. I also understand that __getitem__ is used for iteration. What I don't understand is why I am getting this error, or what to do about it. DetailView, which is supposed to be for a single object, so it must have some 'get' mechanism, and I see from ccbv.co.uk that it does, but then why is this traceback complaining about __getitem__? In other words, why is it looking for __getitem__ at all?

class CodeDetailView(DetailView):

    model = Code

    def get_context_data(self, **kwargs):

        context = super(CodeDetailView, self).get_context_data(**kwargs)

        template_name='statute_single.html'

        return context

        

Is this error really saying that I can't use DetailView where iteration is called for (as it is in my template)?

template

    <li><a href={% url 'family' 'slug' %}>{{ set_list }}</a></li>

    

I was trying to follow the code example from the docs, here:

https://docs.djangoproject.com/en/1.9/topics/class-based-views/generic-display/#adding-extra-context

(I know the extra context is not in the example posted)

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