On Fri, Mar 5, 2010 at 3:56 AM, aditya <bluemangrou...@gmail.com> 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? > > Thanks for any help you all can provide!
There are two issues in here. Firstly, there is the question of whether __in will solve your problem. If it does, you don't need a custom filter clause, so your life gets a whole lot easier :-) Second is the issue of whether you can add your own filter clauses to queries. The short answer is that it is possible (GeoDjango, for example, adds a bunch of extra query clauses), but it's not easy, and it's not a documented approach. Making custom filter clauses easier to add has been proposed in the past, we just haven't gotten around to adding them. Yours, Russ Magee %-) -- You received this message because you are subscribed to the Google Groups "Django developers" group. To post to this group, send email to django-develop...@googlegroups.com. To unsubscribe from this group, send email to django-developers+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-developers?hl=en.
