This was actually the admin overriding the select related in my
manager with an empty one, which does not follow FK=null.
Adding this to my Admin class I was able to force the select_related
to behave.
def queryset(self, request):
return super(PageAdmin, self).queryset(request).select_related
('context__data_type', 'location')
I think this approach is a little unintuitive and will start a convo
on the dev list.
On Feb 20, 12:15 pm, Karen Tracey <kmtra...@gmail.com> wrote:
> On Thu, Feb 19, 2009 at 7:10 PM, Trey <jameslon...@gmail.com> wrote:
>
> > I'm not sure if other people have stumbled onto this but I am having a
> > LOT of trouble getting the admin to use select related.
>
> You know select_related is a performance optimization, right? It doesn't
> affect results in any way, just the number of database queries that may be
> required to produce a page. It isn't clear from what you have written here
> how you are determining that select_related is not working. Are you
> checking the number of queries issued somehow and seeing more than you would
> expect? If so, explicitly listing the queries you are seeing vs. what you
> are expecting (which also might require more complete model and admin defs
> so people can understand the queries) would help people either explain why
> the queries that are being issued are correct, or point out how to adjust
> the admin defs to get the results you are expecting.
>
> If the problem is you are not seeing the results you are expecting on the
> admin pages, then it likely has nothing to do with select_related, and you
> need to more completely explain what you are expecting to see versus what
> you are seeing.
>
> Karen
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