python - Django 从父模型获取基础模型

Question

有没有办法从基础模型调用父模型。我的 model.py 看起来像:

模型.py

Class A(models.Model):
     title = models.CharField(max_length=350)
     description = models.TextField()

Class B(models.Model):
     reftitle = models.CharField(max_length=100)
     inventory = models.IntegerField()

Class C(models.Model):
      a = models.ForeignKey('A')
      b = models.ForeignKey('B')
      notes = models.TextField()

由于某些原因，我只能从A类检索数据是否有任何可能的方法可以通过引用A类检索C类 .

Answer 1

从给定的 A 获取所有 C:

a = A()
list_of_c = a.c_set.all()

并从给定的C获取A:

c = C()
a = c.a

The reference has an own section about Many-to-one-relationships .