Thanks alot guys.  If I can be honest, I'm having a little trouble
digesting just this one line:

q = q | f if q else f

That line of code only allows (q1 | q2 | q3), right?

It will not allow mixing "AND" as well as "OR" (i.e., q1 & q2 | q3)?

Thanks!



On Apr 7, 1:26 pm, Vinicius Mendes <vbmen...@gmail.com> wrote:
> On Wed, Apr 7, 2010 at 2:00 PM, Tom Evans <tevans...@googlemail.com> wrote:
> > On Wed, Apr 7, 2010 at 5:39 PM, Daniel <unagimiy...@gmail.com> wrote:
> > > Hi,
>
> > > Thank you for your help everyone.  I know that I need to learn python
> > > better, and I did read those articles.  What is still a bit unclear to
> > > me, though, is how could I add an "OR" or "AND" separator between Q
> > > objects?
>
> > > So I have a list of qobjects like [qObj1, qObj2, qObj3].
>
> > > What I want is something like Sample.objects.filter((qObj1 | qObj2),
> > > qObj3)
>
> > > I know that the default is for all Q objects to be "ANDed" together.
> > > I think the join operation is not going to work here, nor is
> > > concatenation, but is there something obvious that I'm missing?
>
> > > THANK YOU :>
>
> > Documentation on how to combine Q objects:
>
> >http://docs.djangoproject.com/en/1.1/topics/db/queries/#complex-looku...
>
> > So you want to loop through them, and 'or' them together..
>
> > filters = [ q1, q2, q3, q4, q5 ]
> > q = None
> > for f in filters:
> >  q = q | f if q else f
> > Foo.objects.filter(q)
>
> Refining a little:
>
> filters = [q1,q2,q3,q4,q5]
> q = Q()
> for f in filters:
>     q |= f
> Foo.objects.filter(q)
>
> Q() is identity for & and |.
>
> > Tom
>
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>
> ______________________
> Vinícius Mendes
> Solucione Sistemashttp://solucione.info/

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