Add compatibility layer for Pydantic V2

fastapi_users/authentication/transport/bearer.py

@@ -8,6 +8,7 @@ from fastapi_users.authentication.transport.base import (
     TransportLogoutNotSupportedError,
 )
 from fastapi_users.openapi import OpenAPIResponseType
+from fastapi_users.schemas import model_dump
 
 
 class BearerResponse(BaseModel):
@@ -23,7 +24,7 @@ class BearerTransport(Transport):
 
     async def get_login_response(self, token: str) -> Response:
         bearer_response = BearerResponse(access_token=token, token_type="bearer")
-        return JSONResponse(bearer_response.dict())
+        return JSONResponse(model_dump(bearer_response))
 
     async def get_logout_response(self) -> Response:
         raise TransportLogoutNotSupportedError()

fastapi_users/router/oauth.py

@@ -267,6 +267,6 @@ def get_oauth_associate_router(
             request,
         )
 
-        return user_schema.from_orm(user)
+        return schemas.model_validate(user_schema, user)
 
     return router

fastapi_users/router/register.py

@@ -71,6 +71,6 @@ def get_register_router(
                 },
             )
 
-        return user_schema.from_orm(created_user)
+        return schemas.model_validate(user_schema, created_user)
 
     return router

fastapi_users/router/users.py

@@ -48,7 +48,7 @@ def get_users_router(
     async def me(
         user: models.UP = Depends(get_current_active_user),
     ):
-        return user_schema.from_orm(user)
+        return schemas.model_validate(user_schema, user)
 
     @router.patch(
         "/me",
@@ -96,7 +96,7 @@ def get_users_router(
             user = await user_manager.update(
                 user_update, user, safe=True, request=request
             )
-            return user_schema.from_orm(user)
+            return schemas.model_validate(user_schema, user)
         except exceptions.InvalidPasswordException as e:
             raise HTTPException(
                 status_code=status.HTTP_400_BAD_REQUEST,
@@ -129,7 +129,7 @@ def get_users_router(
         },
     )
     async def get_user(user=Depends(get_user_or_404)):
-        return user_schema.from_orm(user)
+        return schemas.model_validate(user_schema, user)
 
     @router.patch(
         "/{id}",
@@ -183,7 +183,7 @@ def get_users_router(
             user = await user_manager.update(
                 user_update, user, safe=False, request=request
             )
-            return user_schema.from_orm(user)
+            return schemas.model_validate(user_schema, user)
         except exceptions.InvalidPasswordException as e:
             raise HTTPException(
                 status_code=status.HTTP_400_BAD_REQUEST,

fastapi_users/router/verify.py

@@ -70,7 +70,7 @@ def get_verify_router(
     ):
         try:
             user = await user_manager.verify(token, request)
-            return user_schema.from_orm(user)
+            return schemas.model_validate(user_schema, user)
         except (exceptions.InvalidVerifyToken, exceptions.UserNotExists):
             raise HTTPException(
                 status_code=status.HTTP_400_BAD_REQUEST,

fastapi_users/schemas.py

@@ -1,13 +1,35 @@
-from typing import Generic, List, Optional, TypeVar
+from typing import Any, Dict, Generic, List, Optional, Type, TypeVar
 
-from pydantic import BaseModel, EmailStr
+from pydantic import BaseModel, ConfigDict, EmailStr
+from pydantic.version import VERSION as PYDANTIC_VERSION
 
 from fastapi_users import models
 
+PYDANTIC_V2 = PYDANTIC_VERSION.startswith("2.")
+
+SCHEMA = TypeVar("SCHEMA", bound=BaseModel)
+
+if PYDANTIC_V2:
+
+    def model_dump(model: BaseModel, *args, **kwargs) -> Dict[str, Any]:
+        return model.model_dump(*args, **kwargs)
+
+    def model_validate(schema: Type[SCHEMA], obj: Any, *args, **kwargs) -> SCHEMA:
+        return schema.model_validate(obj, *args, **kwargs)
+
+else:
+
+    def model_dump(model: BaseModel, *args, **kwargs) -> Dict[str, Any]:
+        return model.dict(*args, **kwargs)
+
+    def model_validate(schema: Type[SCHEMA], obj: Any, *args, **kwargs) -> SCHEMA:
+        return schema.from_orm(obj)
+
 
 class CreateUpdateDictModel(BaseModel):
     def create_update_dict(self):
-        return self.dict(
+        return model_dump(
+            self,
             exclude_unset=True,
             exclude={
                 "id",
@@ -19,10 +41,10 @@ class CreateUpdateDictModel(BaseModel):
         )
 
     def create_update_dict_superuser(self):
-        return self.dict(exclude_unset=True, exclude={"id"})
+        return model_dump(self, exclude_unset=True, exclude={"id"})
 
 
-class BaseUser(Generic[models.ID], CreateUpdateDictModel):
+class BaseUser(CreateUpdateDictModel, Generic[models.ID]):
     """Base User model."""
 
     id: models.ID
@@ -31,6 +53,10 @@ class BaseUser(Generic[models.ID], CreateUpdateDictModel):
     is_superuser: bool = False
     is_verified: bool = False
 
+    if PYDANTIC_V2:
+        model_config = ConfigDict(from_attributes=True)
+    else:
+
         class Config:
             orm_mode = True
 
@@ -44,11 +70,11 @@ class BaseUserCreate(CreateUpdateDictModel):
 
 
 class BaseUserUpdate(CreateUpdateDictModel):
-    password: Optional[str]
-    email: Optional[EmailStr]
-    is_active: Optional[bool]
-    is_superuser: Optional[bool]
-    is_verified: Optional[bool]
+    password: Optional[str] = None
+    email: Optional[EmailStr] = None
+    is_active: Optional[bool] = None
+    is_superuser: Optional[bool] = None
+    is_verified: Optional[bool] = None
 
 
 U = TypeVar("U", bound=BaseUser)
@@ -56,7 +82,7 @@ UC = TypeVar("UC", bound=BaseUserCreate)
 UU = TypeVar("UU", bound=BaseUserUpdate)
 
 
-class BaseOAuthAccount(Generic[models.ID], BaseModel):
+class BaseOAuthAccount(BaseModel, Generic[models.ID]):
     """Base OAuth account model."""
 
     id: models.ID
@@ -67,6 +93,10 @@ class BaseOAuthAccount(Generic[models.ID], BaseModel):
     account_id: str
     account_email: str
 
+    if PYDANTIC_V2:
+        model_config = ConfigDict(from_attributes=True)
+    else:
+
         class Config:
             orm_mode = True
 

tests/conftest.py

@@ -39,14 +39,14 @@ lancelot_password_hash = password_helper.hash("lancelot")
 excalibur_password_hash = password_helper.hash("excalibur")
 
 
-IDType = uuid.UUID
+IDType = UUID4
 
 
 @dataclasses.dataclass
 class UserModel(models.UserProtocol[IDType]):
     email: str
     hashed_password: str
-    id: uuid.UUID = dataclasses.field(default_factory=uuid.uuid4)
+    id: IDType = dataclasses.field(default_factory=uuid.uuid4)
     is_active: bool = True
     is_superuser: bool = False
     is_verified: bool = False
@@ -59,7 +59,7 @@ class OAuthAccountModel(models.OAuthAccountProtocol[IDType]):
     access_token: str
     account_id: str
     account_email: str
-    id: uuid.UUID = dataclasses.field(default_factory=uuid.uuid4)
+    id: IDType = dataclasses.field(default_factory=uuid.uuid4)
     expires_at: Optional[int] = None
     refresh_token: Optional[str] = None
 
@@ -70,15 +70,15 @@ class UserOAuthModel(UserModel):
 
 
 class User(schemas.BaseUser[IDType]):
-    first_name: Optional[str]
+    first_name: Optional[str] = None
 
 
 class UserCreate(schemas.BaseUserCreate):
-    first_name: Optional[str]
+    first_name: Optional[str] = None
 
 
 class UserUpdate(schemas.BaseUserUpdate):
-    first_name: Optional[str]
+    first_name: Optional[str] = None
 
 
 class UserOAuth(User, schemas.BaseOAuthAccountMixin):

tests/test_fastapi_users.py

@@ -4,7 +4,7 @@ import httpx
 import pytest
 from fastapi import Depends, FastAPI, status
 
-from fastapi_users import FastAPIUsers
+from fastapi_users import FastAPIUsers, schemas
 from tests.conftest import IDType, User, UserCreate, UserModel, UserUpdate
 
 
@@ -77,7 +77,7 @@ async def test_app_client(
     def optional_current_user(
         user: Optional[UserModel] = Depends(fastapi_users.current_user(optional=True)),
     ):
-        return User.from_orm(user) if user else None
+        return schemas.model_validate(User, user) if user else None
 
     @app.get("/optional-current-active-user")
     def optional_current_active_user(
@@ -85,7 +85,7 @@ async def test_app_client(
             fastapi_users.current_user(optional=True, active=True)
         ),
     ):
-        return User.from_orm(user) if user else None
+        return schemas.model_validate(User, user) if user else None
 
     @app.get("/optional-current-verified-user")
     def optional_current_verified_user(
@@ -93,7 +93,7 @@ async def test_app_client(
             fastapi_users.current_user(optional=True, verified=True)
         ),
     ):
-        return User.from_orm(user) if user else None
+        return schemas.model_validate(User, user) if user else None
 
     @app.get("/optional-current-superuser")
     def optional_current_superuser(
@@ -101,7 +101,7 @@ async def test_app_client(
             fastapi_users.current_user(optional=True, active=True, superuser=True)
         ),
     ):
-        return User.from_orm(user) if user else None
+        return schemas.model_validate(User, user) if user else None
 
     @app.get("/optional-current-verified-superuser")
     def optional_current_verified_superuser(
@@ -111,7 +111,7 @@ async def test_app_client(
             )
         ),
     ):
-        return User.from_orm(user) if user else None
+        return schemas.model_validate(User, user) if user else None
 
     async for client in get_test_client(app):
         yield client

tests/test_manager.py

@@ -1,8 +1,8 @@
+import uuid
 from typing import Callable
 
 import pytest
 from fastapi.security import OAuth2PasswordRequestForm
-from pydantic import UUID4
 from pytest_mock import MockerFixture
 
 from fastapi_users.exceptions import (
@@ -77,7 +77,7 @@ def create_oauth2_password_request_form() -> (
 class TestGet:
     async def test_not_existing_user(self, user_manager: UserManagerMock[UserModel]):
         with pytest.raises(UserNotExists):
-            await user_manager.get(UUID4("d35d213e-f3d8-4f08-954a-7e0d1bea286f"))
+            await user_manager.get(uuid.UUID("d35d213e-f3d8-4f08-954a-7e0d1bea286f"))
 
     async def test_existing_user(
         self, user_manager: UserManagerMock[UserModel], user: UserModel