AttributeError:类型对象“Score”没有属性“date”

Question

我正在尝试在fastAPI中使用Ortoise orm为orm制作记分板API。 我面临一些错误，我完全不知道为什么，因为我的分数类有属性日期

main.py：

from fastapi import FastAPI
from tortoise.contrib.fastapi import register_tortoise

from scoreboard.models import (Score, ScoreIn_Pydantic, Team, Team_Pydantic,
                               TeamIn_Pydantic)

app = FastAPI()
db: list[Team] = []
register_tortoise(app=app,
                  db_url="sqlite://db.sqlite3",
                  modules={"models": ["scoreboard.models"]},
                  generate_schemas=True,
                  add_exception_handlers=True)


@app.get("/")
async def root():
    return True


@app.get("/score")
async def get_score() -> list[Team_Pydantic]:
    return await Team_Pydantic.from_queryset(Team.all())


@app.get("/score/{team_name}")
async def get_team_score(team_name: str):
    return Team_Pydantic.from_queryset_single(Team.get(name=team_name))


@app.put("/score")
async def post_score(team: TeamIn_Pydantic, score: ScoreIn_Pydantic):
    team_ = await Team.filter(name=team.dict()["name"]).first()
    if team_ is None:
        team_ = await Team.create(**team.dict(), **score.dict())
    else:
        await team_.score_history.add(Score(**score.dict()))
    await team_.save()
    return await Team_Pydantic.from_tortoise_orm(team_)

models.py：

from datetime import date as dt

from tortoise import fields
from tortoise.contrib.pydantic.creator import pydantic_model_creator
from tortoise.models import Model


class Score(Model):
    id: int = fields.IntField(pk=True)
    score: int = fields.IntField()
    date: dt = fields.DateField()

    def __str__(self):
        return f"{self.today_date()}: {self.score}"

    def today_date(self):
        return dt.today()

    class PydanticMeta:
        computed = ['date']


class Team(Model):
    id: int = fields.IntField(pk=True)
    name: str = fields.CharField(max_length=20, index=True)
    total_score: int = fields.IntField()
    score_history = fields.ManyToManyField("models.Score",
                                           related_name='score_history')

    def calculate_total_score(self):
        return self.score_history.all().aggregate(Sum('score'))

    def __str__(self):
        return f"{self.name}: {self.total_score}"

    class PydanticMeta:
        computed = ['total_score']


Score_Pydantic = pydantic_model_creator(Score, name="Score")
Team_Pydantic = pydantic_model_creator(Team, name="Team")
ScoreIn_Pydantic = pydantic_model_creator(Score,
                                          name="Score",
                                          exclude_readonly=True)
TeamIn_Pydantic = pydantic_model_creator(Team,
                                         name="TeamIn",
                                         exclude_readonly=True)

错误： AttributeError: type object 'Score' has no attribute 'date'

完全回溯：

> uvicorn scoreboard.main:app
Traceback (most recent call last):
  File "C:\Program Files\Python39\lib\runpy.py", line 197, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "C:\Program Files\Python39\lib\runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "C:\Program Files\Python39\Scripts\uvicorn.exe\__main__.py", line 7, in <module>
    server.run()
  File "C:\Program Files\Python39\lib\site-packages\uvicorn\server.py", line 49, in run
    loop.run_until_complete(self.serve(sockets=sockets))
  File "C:\Program Files\Python39\lib\asyncio\base_events.py", line 642, in run_until_complete
    return future.result()
  File "C:\Program Files\Python39\lib\site-packages\uvicorn\server.py", line 56, in serve
    config.load()
  File "C:\Program Files\Python39\lib\site-packages\uvicorn\config.py", line 308, in load
    self.loaded_app = import_from_string(self.app)
  File "C:\Program Files\Python39\lib\site-packages\uvicorn\importer.py", line 20, in import_from_string
    module = importlib.import_module(module_str)
  File "C:\Program Files\Python39\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 850, in exec_module
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
  File ".\scoreboard\main.py", line 3, in <module>
    from scoreboard.models import Score, Team, Team_Pydantic, TeamIn_Pydantic, ScoreIn_Pydantic
  File ".\scoreboard\models.py", line 41, in <module>
    Score_Pydantic = pydantic_model_creator(Score, name="Score")
  File "C:\Users\navdh\AppData\Roaming\Python\Python39\site-packages\tortoise\contrib\pydantic\creator.py", line 271, in pydantic_model_creator
    {
  File "C:\Users\navdh\AppData\Roaming\Python\Python39\site-packages\tortoise\contrib\pydantic\creator.py", line 272, in <dictcomp>        
    k: {"field_type": callable, "function": getattr(cls, k), "description": None}
AttributeError: type object 'Score' has no attribute 'date'