On Thursday, February 17, 2011 10:06:40 PM UTC, Margie Roginski wrote:
>
> Thanks for your reply, Daniel. I didn't give my example specifically
> enough. In my particular case I actually have a handle to the Person
> and actually don't need all the join dates for all the people in that
> group. I just need that person's join date.
>
> I can see that it is easy to get all membership info for a given
> group, but I'm guessing that my original solution is the appropriate
> solution for getting the join date for just a single person?
>
> Margie
No, because you're doing a lot of extra selecting and iterating that you
don't need to. You can still do it in a single go:
Membership.objects.get(person=person, group__name='beatles').join_date
I often find that apparently difficult queries become a lot simpler if you
approach them from the other direction - from the Membership rather than the
Group, in this instance.
--
DR.
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