Not quite, because 'in' does exact matching, and I'm looking for the inexact
matching that 'contains' provides. Here's one way to simulate a
'contains_any' filter:
t = ["acrylic","watercolors"] # my list of tags
q = Q(tags__name__contains=t[0])
for i in range(1,len(t)):
q = q | Q(tags__name__contains=t[i])
o = Image.objects.filter(q) # o is the result of the contains_any filter
This works fine, but here is the ideal way I'm hoping to write the same
thing:
o = Image.objects.filter(tags__name__contains_any=t)
But I'm not sure how to go about adding that new filter.
Aditya
On Thu, Mar 4, 2010 at 3:52 PM, Peter Herndon <tphern...@gmail.com> wrote:
> On Mar 4, 2010, at 2:56 PM, aditya wrote:
>
> > I would like to add a new filter for models to my django build that
> > can be used as follows:
> >
> > tags = ['tag1','tag2','tag3'....'tagn']
> > i = Image.objects.filter(tags__contains_any=tags)
> >
> >
> > Essentially, instead of passing a string, I pass a list and get a set
> > of valid objects that match *any* of the items in the list. I'm a loss
> > for where to look for the relevant code, though....I'm trying to find
> > where the 'contains' filter has been implemented, so that I can take a
> > look at how its written. Currently I'm looking at db.models.query and
> > db.models.query_utils. Where should I be looking?
> >
> Hi Aditya,
>
> Won't the "in" filter do exactly what you need?
>
> http://docs.djangoproject.com/en/1.1/ref/models/querysets/#in
>
> ---Peter
>
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