I was not aware of the __in option! However, I think the best option now that I've rethought this problem is to change my models. Thanks!
On Mar 25, 6:21 pm, Malcolm Tredinnick <malc...@pointy-stick.com> wrote: > On Wed, 2009-03-25 at 09:46 -0700, Jesse wrote: > > One research project can have many publications. One model includes > > the research projects, one model includes the publications and a third > > model assigns multiple publications to each research project. > > The model: > > class Researchproject(models.Model): > > restitle = models.TextField() > > > class Publication(models.Model): > > pubtitle = models.TextField() > > > class Researchpublications(models.Model): > > researchproject = models.ForeignKey(Researchproject) > > publication = models.ForeignKey(Publication) > > > In the view.py the research projects are selected and appended into a > > list called: > > research_list > > > In the view I created this statement: > > respublications=Researchproject.objects.filter > > (researchpublications__researchproject=research_list), which doesn't > > get any errors, but also doesn't seem to do what I need it to do. > > The problem here is in the filter constraint. The left-hand side of a > "thing=value" filter is talking about individual "things", so an > individual ResearchProject record in this case. That's a long way of > saying that you need to use the "__in" lookup type here: > > ....filter(researchpublications__researchproject__in=research_list)... > > I think you'll find that will do what you're after. Right now (with your > current filter), not ResearchProject row will be equal to the list of > values on the right-hand side of the filter. > > Regards, > Malcolm --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
