我对 ModelMommy 的这种烦恼已经有一段时间了，但我不知道如何正确地做到这一点。
让我们假设一个简单的关系：
class Organization(models.Model):
label = models.CharField(unique=True)
class Asset(models.Model):
organization = models.ForeignKey(Organization)
label = models.CharField(unique=True)
和食谱：
from model_mommy.recipe import Recipe, foreign_key
organization_recipe = Recipe(Organization, label='My Organization')
asset1_recipe = Recipe(Asset,
organization=foreign_key(organization_recipe),
label='asset 1')
asset2_recipe = Recipe(Asset,
organization=foreign_key(organization_recipe),
label='asset 2')
现在，当我制作这些资产配方时，我收到错误：
>> asset1 = asset1_recipe.make()
>> asset2 = asset2_recipe.make()
IntegrityError: duplicate key value violates unique constraint "organizations_organization_label_key"
DETAIL: Key (label)=(My Organization) already exists.
这可以通过将 asset1 的组织作为参数提供给 asset2 的 make 方法来解决：
>> asset1 = asset1_recipe.make()
>> asset2 = asset2_recipe.make(organization=asset1.organization)
但必须有一种更简单、更干净的方法来做到这一点。
编辑 …