On Tue, 2008-03-04 at 07:28 -0800, Vincent Foley wrote:
> Hello,
>
> I have a curious problem with a complex filter in 0.96:
>
> Merchant.objects.filter(Q(categories_fr__name__icontains=s) |
> Q(categories_en__name__icontains=s))
>
> this returns an empty queryset even when 's' is in categories_fr.
> Changing categories_fr__name with an attribute directly in the object
> has the same effect. It seems that a ManyToMany field with no
> elements nullifies the entire query.
>
> Is this a bug, or am I misunderstanding something?
There are a few issues with many-to-many fields and empty results like
this. The whole area has been given an overhaul in the queryset-refactor
branch and so should be fixed on trunk soon-ish.
In the meantime, just select the two halves individually and merge them
in Python.
Malcolm
--
If it walks out of your refrigerator, LET IT GO!!
http://www.pointy-stick.com/blog/
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