Find the corresponding users that added a given user as a friend.

see_friends_example.md

class Friend(models.Model):
    users = models.ManyToManyField(User)
    current_user = models.ForeignKey(User, related_name='owner', null=True)

    @classmethod
    def who_added_user(cls, user):
        users = []
        for friend in cls.objects.all():
            if user in friend.users.all():
                users.append(friend.current_user)
        return users

Thanks, i really apreciate your work ;)

if user in friend.users.all(): # friend instead of friends

    @classmethod
    def who_added_user(cls, user):
        users = []
        for friend in cls.objects.all():
            if user in friend.users.all(): # friend instead of friends
                users.append(friend.current_user)
        return users

Thank you @MarcJoan for correction and the feedback! I've updated the original.

If I remember correctly I wrote that snippet off the top of my head so please forgive my recklessness.