On Wed, Feb 11, 2009 at 2:29 AM, khsing <khsing...@gmail.com> wrote:
>
> class user(models.Model):
> username = models.CharField(max_length=50)
>
> class group(models.Model):
> groupname = models.CharField(max_length=50)
> users = models.ManyToManyField(user)
> groups = models.ManyToManyField('self')
>
> there are my models.
>
> I have no idea to get a complete group list in such models, anyone
> give me a suggestion.
>
> example:
> user U1 belong group G1 and group G1 belong G2, I want get G1 and G2 via
> U1.
> like this
>
> def get_all_groups(user):
> return all_groups
>
> >>>get_all-groups(U1)
> [G1, G2]
>
> that all.
>
> Thank.
>
>
>
>
> On Tue, Feb 10, 2009 at 12:18 PM, khsing <khsing...@gmail.com> wrote:
> > Alex, thanks, now it work.
> >
> > now have a new problem is may a group can contain itself, this will be a
> loop.
> >
> > how to avoid this condition?
> >
> >
> >
> > On Tue, Feb 10, 2009 at 11:28 AM, Alex Gaynor <alex.gay...@gmail.com>
> wrote:
> >>
> >>
> >> On Mon, Feb 9, 2009 at 10:18 PM, khsing <khsing...@gmail.com> wrote:
> >>>
> >>> I want design a group that can contain other groups, and one group can
> >>> belong many groups.
> >>>
> >>> I write such code below, but not right.
> >>>
> >>> class Group(models.Model):
> >>> groups = models.ManyToManyField(Group)
> >>>
> >>> any suggestion?
> >>>
> >>> or how to design such a group.
> >>>
> >>> thanks.
> >>>
> >>> --
> >>> A man live in jail and want to break.
> >>> http://blog.khsing.net
> >>>
> >>>
> >>
> >> To have a relationship with oneself you do
> >>
> >> ManyToManyField("self")
> >>
> >> --
> >> "I disapprove of what you say, but I will defend to the death your right
> to
> >> say it." --Voltaire
> >> "The people's good is the highest law."--Cicero
> >>
> >> >>
> >>
> >
> >
> >
> > --
> > A man live in jail and want to break.
> > http://blog.khsing.net
> >
>
>
>
> --
> A man live in jail and want to break.
> http://blog.khsing.net
>
> >
>
you could probably do something like:
def all_groups(user):
groups = set()
for group in user.groups.all():
groups.add(group)
for other_group in group.groups.all():
groups.add(other_group)
return groups
--
"I disapprove of what you say, but I will defend to the death your right to
say it." --Voltaire
"The people's good is the highest law."--Cicero
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