Getting the last member of a group on an intermediary M2M
- by rh0dium
If we look at the existing docs, what is the best way to get the last member added? This is similar to this but what I want to do is to be able to do this.
group = Group.objects.get(id=1)
group.get_last_member_added() #This is by ('-date_added')
<Person: FOO>
I think the best way is through a manager but how do you do this on an intermediary model?
class Person(models.Model):
name = models.CharField(max_length=128)
def __unicode__(self):
return self.name
class Group(models.Model):
name = models.CharField(max_length=128)
members = models.ManyToManyField(Person, through='Membership')
def __unicode__(self):
return self.name
class Membership(models.Model):
person = models.ForeignKey(Person)
group = models.ForeignKey(Group)
date_joined = models.DateField()
invite_reason = models.CharField(max_length=64)
