Originally posted by **Briscoooe** September 27, 2021
I am following [this example](https://replit.com/@frankie567/fastapi-users-sqlalchemy) in my project and I can't seem to get it to work. The error I am getting is
```Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/uvicorn/protocols/http/httptools_impl.py", line 390, in run_asgi
result = await app(self.scope, self.receive, self.send)
File "/usr/local/lib/python3.7/site-packages/uvicorn/middleware/proxy_headers.py", line 45, in __call__
return await self.app(scope, receive, send)
File "/usr/local/lib/python3.7/site-packages/fastapi/applications.py", line 199, in __call__
await super().__call__(scope, receive, send)
File "/usr/local/lib/python3.7/site-packages/starlette/applications.py", line 112, in __call__
await self.middleware_stack(scope, receive, send)
File "/usr/local/lib/python3.7/site-packages/starlette/middleware/errors.py", line 181, in __call__
raise exc from None
File "/usr/local/lib/python3.7/site-packages/starlette/middleware/errors.py", line 159, in __call__
await self.app(scope, receive, _send)
File "/usr/local/lib/python3.7/site-packages/starlette/middleware/cors.py", line 78, in __call__
await self.app(scope, receive, send)
File "/usr/local/lib/python3.7/site-packages/starlette/exceptions.py", line 82, in __call__
raise exc from None
File "/usr/local/lib/python3.7/site-packages/starlette/exceptions.py", line 71, in __call__
await self.app(scope, receive, sender)
File "/usr/local/lib/python3.7/site-packages/starlette/routing.py", line 580, in __call__
await route.handle(scope, receive, send)
File "/usr/local/lib/python3.7/site-packages/starlette/routing.py", line 241, in handle
await self.app(scope, receive, send)
File "/usr/local/lib/python3.7/site-packages/starlette/routing.py", line 52, in app
response = await func(request)
File "/usr/local/lib/python3.7/site-packages/fastapi/routing.py", line 217, in app
dependant=dependant, values=values, is_coroutine=is_coroutine
File "/usr/local/lib/python3.7/site-packages/fastapi/routing.py", line 149, in run_endpoint_function
return await dependant.call(**values)
File "/usr/local/lib/python3.7/site-packages/fastapi_users/router/auth.py", line 28, in login
user = await user_manager.authenticate(credentials)
File "/usr/local/lib/python3.7/site-packages/fastapi_users/manager.py", line 518, in authenticate
user = await self.get_by_email(credentials.username)
File "/usr/local/lib/python3.7/site-packages/fastapi_users/manager.py", line 102, in get_by_email
user = await self.user_db.get_by_email(user_email)
File "/usr/local/lib/python3.7/site-packages/fastapi_users_db_sqlalchemy/__init__.py", line 133, in get_by_email
return await self._make_user(user) if user else None
File "/usr/local/lib/python3.7/site-packages/fastapi_users_db_sqlalchemy/__init__.py", line 200, in _make_user
user_dict = {**user}
TypeError: 'Record' object is not a mapping
```
The request I am trying is [login](https://fastapi-users.github.io/fastapi-users/usage/routes/#post-login). I know the request is working up until the last point because when I try to login with a bad password I get a 400 error response with a JSON body. When I try and login with correct credentials (or even when the email does exist) I get a 500 as the user table record can't be mapped to the response body. I have followed the example to the letter, most of the code I have is copied 1:1 from the documentation so I can't really see why it doesn't work.
Here are my tables and models. I have moved all the snippets to one block for brevity, in the project they all exist in separate files.
```
class User(Base, SQLAlchemyBaseUserTable):
__tablename__ = 'user_'
first_name = Column(String, nullable=False)
last_name = Column(String, nullable=False)
class User(models.BaseUser):
pass
class UserCreate(models.BaseUserCreate):
pass
class UserUpdate(models.BaseUserUpdate):
pass
class UserInDB(User, models.BaseUserDB):
pass
def get_user_db():
yield SQLAlchemyUserDatabase(UserInDB, database, User.__table__)
SECRET = "SECRET"
class UserManager(BaseUserManager[UserCreate, UserInDB]):
user_db_model = UserInDB
reset_password_token_secret = SECRET
verification_token_secret = SECRET
def get_user_manager(user_db: SQLAlchemyUserDatabase = Depends(deps.get_user_db)):
yield UserManager(user_db)
jwt_authentication = JWTAuthentication(
secret=SECRET, lifetime_seconds=3600, tokenUrl="auth/jwt/login"
)
fastapi_users = FastAPIUsers(
get_user_manager,
[jwt_authentication],
User,
UserCreate,
UserUpdate,
UserInDB,
)
current_active_user = fastapi_users.current_user(active=True)
api_router.include_router(users.fastapi_users.get_auth_router(users.jwt_authentication), prefix="/auth/jwt", tags=["auth"])
api_router.include_router(users.fastapi_users.get_register_router(), prefix="/auth", tags=["auth"])
api_router.include_router(users.fastapi_users.get_reset_password_router(), prefix="/auth", tags=["auth"])
api_router.include_router(users.fastapi_users.get_verify_router(), prefix="/auth", tags=["auth"])
api_router.include_router(users.fastapi_users.get_users_router(), prefix="/users", tags=["users"])
```
The issue was to do with the Base class I was passing into the User class, I was a different one which I already had in my code, rather than the DeclarativeMeta = declarative_base() one.
Discussed in https://github.com/fastapi-users/fastapi-users/discussions/745
Closing this.
The issue was to do with the
Baseclass I was passing into theUserclass, I was a different one which I already had in my code, rather than theDeclarativeMeta = declarative_base()one.