动态地将ManyToMany关系添加到Django对象

Question

我公司课程与自身有多种M2M关系

类公司（models.Model）：

divisions = models.ManyToManyField('self', symmetrical=False, related_name="parent_companies")
parents = models.ManyToManyField('self', symmetrical=False, related_name="divisions_companies")
comp = models.ManyToManyField('self', symmetrical=False, related_name="comp")
friends = models.ManyToManyField('self', symmetrical=False, related_name="friends")

我希望能够像这样动态添加M2M关系，但显然不起作用。有没有办法动态地做到这一点？

                    company, was_created = Company.objects.get_or_create(name=info)
                    setattr(self,key, company)

Answer 1

知道了。只需要传递一个列表..

 company, was_created = Company.objects.get_or_create(name=info)
                        setattr(self,key, [company,])

Answer 2

语法用于添加M2M field.add(obj_pk or obj)

company, was_created = Company.objects.get_or_create(name=info)
self.comp.add(company)