Yes of course.... my mistake when "washing" my original messy code
Peter Magnusson MUSTADFORS BRUKS AB | Sågbrovägen 1 | SE66010 Dals Långed | Phone +46 (0)531-71 435 | Mobile +46 (0)76-824 96 04 | http://www.mustad.se On Wed, Jan 12, 2011 at 15:32, Daniel Roseman <dan...@roseman.org.uk> wrote: > On Wednesday, January 12, 2011 2:04:28 PM UTC, Peter wrote: >> >> If I have a couple of models like these (just an example).... >> >> class Parent(models.Model): >> name = models.CharField(max_length=100) >> >> class Gender(models.Model): >> name = models.CharField(max_length=100) >> >> class Child(models.Model): >> entity = models.ForeignKey(Entity, related_name=’children’) >> gender = models.ForeignKey(Gender) >> name = models.CharField(max_length=100) >> >> >> How can i get a list of parents that _doesn't_ have a child of a >> certain gender? >> >> >>> gender = Gender.objects.get(name='female') >> >>> Parent.objects.filter(#whatever that gets parents that doesn't have a >> child with gender=gender#) >> >> I'm completely lost here so please help me out. >> If it was about getting parents with no children then >> "children__isnull=True" should do it but now I don't know. >> The answer is probably obvious but I'm suffering from a mental block >> right here. >> >> > Your question is a bit confusing because the Parent model doesn't seem to > be related to anything. Should the FK to 'Entity' in Child actually be to > Parent? Assuming yes, does this give you what you want? > > Parent.objects.exclude(child__gender='female') > -- > DR. > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To post to this group, send email to django-us...@googlegroups.com. > To unsubscribe from this group, send email to > django-users+unsubscr...@googlegroups.com<django-users%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/django-users?hl=en. > -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@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.
