Try this: for friendof0 in Person0.friends.all(): for friendof1 in Person1.friends.all(): if friendof0 == friendof1: # Person 0 and Person 1 share a friend. else: # They have no shared friends.
Brett On 10/28/11 12:59 PM, "Kevin" <kveron...@gmail.com> wrote: >Just thought I'd add another example using Python script: > >Person0 = Person() >Person1 = Person() >Person2 = Person() >Person0.friends.add(Person2) >Person2.friends.add(Person0) >Person2.friends.add(Person1) >Person1.friends.add(Person2) > >Now, I would like to do the following, but it seems to fail: > >Person0.friends.all() in Person1.friends.all(). I would like it to >say if Person0 and Person1 share another friend in common. > >Person0 and Person2 are friends >Person1 and Person2 are friends >Person0 and Person1 are NOT friends, but share a friend in common. >How does one find out that even though Person0 and Person1 are not >friends, they do share Person2 as a friend. > >I can use my eye on a Python shell to see that Person2 exists on both >Peson0 and Person1, but how does one make the code see it? > >Sorry for having to clarify this so much, I'm just not sure that my >last post actually explained it properly. > >Thanks. > >On Oct 28, 12:30 pm, Kevin <kveron...@gmail.com> wrote: >> Hello, >> >> I am building a model which shares a relation with another model >> using a ManyToManyField. What I need to do, is find out which models >> are on both on two seperate ManyToManyField lists. Here is a simple >> example of what I am trying to do: >> >> Person: >> friends=ManyToManyField(self) >> >> To find out this persons direct friends, Person.friends... >> To find out which friends this Person shares in common with another >> Person, ???? >> >> Person0: >> Person1 >> Person6 >> Person3 >> Person8 >> >> Person1: >> Person2 >> Person6 >> >> What would be the most optimized QuerySet to find out that both >> Person0 and Person1 are both friends with Person6? >> >> Is there a specific Django app perhaps that can ease develop of this >> type of data relations between objects? >> >> Thanks. > >-- >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. > -- 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.