Re: Problem with query over relationships and the FOO_set Manager
I tried your second solution and it works fine! Thanks! On Jun 25, 4:51 pm, Tim Chase <[EMAIL PROTECTED]> wrote: > > d = Details.objects.filter(creation_date__gte=datetime.date(2007, 06, > > 01)) > > d = d.header_set.filter(code__exact='123', author__exact='dave') > > > but I get an > > AttributeError: 'QuerySet' object has no attribute 'header_set' > > The results (which you store in "d") are a QuerySet which is a > collection of Details. Each Detail within that set has a > header_set property. Thus it would make sense to do something like > >for thing in d: > for header in thing.header_set: >do_something(header) > > Or, if you want the headers, ask for them, not the details: > >since = datetime.date(2007,6,1) >headers = Headers.objects.filter( > code='123', > author='dave', > header__creation_date__gte=since # (*) > ) >for header in headers: > do_something(header) > > The line marked with (*) may be what you're looking for. > > -tim --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Problem with query over relationships and the FOO_set Manager
Whoops...though I hate responding to my own post, I got things backwards somehow (swapping details and headers). Your Details have the header attribute so you want since = datetime.date(2007,6,1) details = Details.objects.filter( code='123', author='dave', header__creation_date__gte=since ) for detail in details: do_something(detail) -tim --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Problem with query over relationships and the FOO_set Manager
On 6/25/07, ilDave <[EMAIL PROTECTED]> wrote: > So, I looked in the documentation and I found the 'FOO_set' Manager, > and I tried something like this: > > d = Details.objects.filter(creation_date__gte=datetime.date(2007, 06, > 01)) > d = d.header_set.filter(code__exact='123', author__exact='dave') > > but I get an > AttributeError: 'QuerySet' object has no attribute 'header_set' The ForeignKey is on Detail, pointing at Header, which means that each Detail has only one Header -- hence there is no "header_set" on a Detail object. What you probably want instead is Detail.objects.filter(created_date__gte=datetime.date(2007, 6, 1), header__code__exact='123', header__author__exact='dave') -- "Bureaucrat Conrad, you are technically correct -- the best kind of correct." --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Problem with query over relationships and the FOO_set Manager
> d = Details.objects.filter(creation_date__gte=datetime.date(2007, 06, > 01)) > d = d.header_set.filter(code__exact='123', author__exact='dave') > > but I get an > AttributeError: 'QuerySet' object has no attribute 'header_set' The results (which you store in "d") are a QuerySet which is a collection of Details. Each Detail within that set has a header_set property. Thus it would make sense to do something like for thing in d: for header in thing.header_set: do_something(header) Or, if you want the headers, ask for them, not the details: since = datetime.date(2007,6,1) headers = Headers.objects.filter( code='123', author='dave', header__creation_date__gte=since # (*) ) for header in headers: do_something(header) The line marked with (*) may be what you're looking for. -tim --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
