在我的数据库中,我有一个Photo类,我用作其他类的外键。这是两个例子。 class SubstancePointsLabel(ResultBase):
#: photo being labeled
photo = models.ForeignKey(Photo, related_name='substance_points_labels')
class Substance
我有这个model.py: class Topping(models.Model):
name = models.CharField(max_length=32)
def __str__(self):
return self.name
class Base(models.Model):
name = models.CharField(max_leng