Django QuerySet太多余了

Question

So I have an issue simply for my own sanity...I have made an API, but it is extremely redundant since the same operations need to be done on multiple different objects:

def seen_by(self,user):
    return self.filter(seen__user=user)
def created_by(self,user):
    return self.filter(created__user=user)
#and the list goes on

For the API, the names will always have words be separated by an underscore and have the word of the table I need to get to as the first word. Is there any way to make it so I don't have to be so redundant?

Answer 1

If I understand the question now, so:

def field_by(self, field_name, user):
    return self.filter(**{field_name + '__user': user})

Answer 2

You probably want to create an abstract model and have your models inherit it.

class Base(models.Model):
    def seen_by(self, user):
        return self.seen.get(user=user)

    class Meta:
        abstract = True

class ChildModel(Base):
    ...