夹具的Django自然键给出反序列化错误

你需要

• natural_key

  在模型中定义方法
• 有

  get_by_natural_key

  方法的经理
• 实际附上经理（

  objects=GraphManager()

  ）

在玩完您的代码后，我使它起作用：

class GraphTypeManager(models.Manager):    def get_by_natural_key(self, type):        return self.get(type=type)class GraphType(models.Model):    type = models.CharField(max_length=100, unique=True)    objects = GraphTypeManager()    def natural_key(self):        return (self.type,)  # must return a tupleclass GraphManager(models.Manager):    def get_by_natural_key(self, name):        return self.get(name=name)class Graph(models.Model):    name = models.CharField(max_length=200, unique=True)    type = models.ForeignKey(GraphType)    objects = GraphManager()

转储数据：

$ bin/django dumpdata index --indent=4 --natural > project/apps/fixtures_dev/initial_data.json[    {        "pk": 1,        "model": "index.graphtype",        "fields": { "type": "asotuh"        }    },    {        "pk": 1,        "model": "index.graph",        "fields": { "type": [     "asotuh" ], "name": "saoneuht"        }    }]bin/django loaddata project/apps/fixtures_dev/initial_data.json Installed 2 object(s) from 1 fixture(s)