✨ Add base class to simplify CRUD (fastapi#23)

Author: ebreton

test.sh

@@ -9,6 +9,6 @@ cookiecutter --config-file ./testing-config.yml --no-input -f ./
 
 cd ./testing-project
 
-bash ./scripts/test.sh
+bash ./scripts/test.sh "$@"
 
 cd ../

{{cookiecutter.project_slug}}/README.md

@@ -55,7 +55,7 @@ If your Docker is not running in `localhost` (the URLs above wouldn't work) chec
 
 Open your editor at `./backend/app/` (instead of the project root: `./`), so that you see an `./app/` directory with your code inside. That way, your editor will be able to find all the imports, etc.
 
-Modify or add SQLAlchemy models in `./backend/app/app/db_models/`, Pydantic models in `./backend/app/app/models/`, API endpoints in `./backend/app/app/api/`, CRUD (Create, Read, Update, Delete) utils in `./backend/app/app/crud/`. The easiest might be to copy the ones for Items (models, endpoints, and CRUD utils) and update them to your needs.
+Modify or add SQLAlchemy models in `./backend/app/app/models/`, Pydantic schemas in `./backend/app/app/schemas/`, API endpoints in `./backend/app/app/api/`, CRUD (Create, Read, Update, Delete) utils in `./backend/app/app/crud/`. The easiest might be to copy the ones for Items (models, endpoints, and CRUD utils) and update them to your needs.
 
 Add and modify tasks to the Celery worker in `./backend/app/app/worker.py`. 
 
@@ -205,7 +205,7 @@ Make sure you create a "revision" of your models and that you "upgrade" your dat
 docker-compose exec backend bash
 ```
 
-* If you created a new model in `./backend/app/app/db_models/`, make sure to import it in `./backend/app/app/db/base.py`, that Python module (`base.py`) that imports all the models will be used by Alembic.
+* If you created a new model in `./backend/app/app/models/`, make sure to import it in `./backend/app/app/db/base.py`, that Python module (`base.py`) that imports all the models will be used by Alembic.
 
 * After changing a model (for example, adding a column), inside the container, create a revision, e.g.:
 

{{cookiecutter.project_slug}}/backend/app/app/api/api_v1/endpoints/items.py

@@ -6,8 +6,8 @@
 from app import crud
 from app.api.utils.db import get_db
 from app.api.utils.security import get_current_active_user
-from app.db_models.user import User as DBUser
-from app.models.item import Item, ItemCreate, ItemUpdate
+from app.models.user import User as DBUser
+from app.schemas.item import Item, ItemCreate, ItemUpdate
 
 router = APIRouter()
 
@@ -41,7 +41,9 @@ def create_item(
     """
     Create new item.
     """
-    item = crud.item.create(db_session=db, item_in=item_in, owner_id=current_user.id)
+    item = crud.item.create_with_owner(
+        db_session=db, obj_in=item_in, owner_id=current_user.id
+    )
     return item
 
 
@@ -61,7 +63,7 @@ def update_item(
         raise HTTPException(status_code=404, detail="Item not found")
     if not crud.user.is_superuser(current_user) and (item.owner_id != current_user.id):
         raise HTTPException(status_code=400, detail="Not enough permissions")
-    item = crud.item.update(db_session=db, item=item, item_in=item_in)
+    item = crud.item.update(db_session=db, db_obj=item, obj_in=item_in)
     return item
 
 

{{cookiecutter.project_slug}}/backend/app/app/api/api_v1/endpoints/login.py

@@ -10,10 +10,10 @@
 from app.core import config
 from app.core.jwt import create_access_token
 from app.core.security import get_password_hash
-from app.db_models.user import User as DBUser
-from app.models.msg import Msg
-from app.models.token import Token
-from app.models.user import User
+from app.models.user import User as DBUser
+from app.schemas.msg import Msg
+from app.schemas.token import Token
+from app.schemas.user import User
 from app.utils import (
     generate_password_reset_token,
     send_reset_password_email,

{{cookiecutter.project_slug}}/backend/app/app/api/api_v1/endpoints/users.py

@@ -2,15 +2,15 @@
 
 from fastapi import APIRouter, Body, Depends, HTTPException
 from fastapi.encoders import jsonable_encoder
-from pydantic.types import EmailStr
+from pydantic.networks import EmailStr
 from sqlalchemy.orm import Session
 
 from app import crud
 from app.api.utils.db import get_db
 from app.api.utils.security import get_current_active_superuser, get_current_active_user
 from app.core import config
-from app.db_models.user import User as DBUser
-from app.models.user import User, UserCreate, UserInDB, UserUpdate
+from app.models.user import User as DBUser
+from app.schemas.user import User, UserCreate, UserUpdate
 from app.utils import send_new_account_email
 
 router = APIRouter()
@@ -46,7 +46,7 @@ def create_user(
             status_code=400,
             detail="The user with this username already exists in the system.",
         )
-    user = crud.user.create(db, user_in=user_in)
+    user = crud.user.create(db, obj_in=user_in)
     if config.EMAILS_ENABLED and user_in.email:
         send_new_account_email(
             email_to=user_in.email, username=user_in.email, password=user_in.password
@@ -74,7 +74,7 @@ def update_user_me(
         user_in.full_name = full_name
     if email is not None:
         user_in.email = email
-    user = crud.user.update(db, user=current_user, user_in=user_in)
+    user = crud.user.update(db, db_obj=current_user, obj_in=user_in)
     return user
 
 
@@ -103,7 +103,7 @@ def create_user_open(
     if not config.USERS_OPEN_REGISTRATION:
         raise HTTPException(
             status_code=403,
-            detail="Open user resgistration is forbidden on this server",
+            detail="Open user registration is forbidden on this server",
         )
     user = crud.user.get_by_email(db, email=email)
     if user:
@@ -112,7 +112,7 @@ def create_user_open(
             detail="The user with this username already exists in the system",
         )
     user_in = UserCreate(password=password, email=email, full_name=full_name)
-    user = crud.user.create(db, user_in=user_in)
+    user = crud.user.create(db, obj_in=user_in)
     return user
 
 
@@ -125,7 +125,7 @@ def read_user_by_id(
     """
     Get a specific user by id.
     """
-    user = crud.user.get(db, user_id=user_id)
+    user = crud.user.get(db, id=user_id)
     if user == current_user:
         return user
     if not crud.user.is_superuser(current_user):
@@ -141,16 +141,16 @@ def update_user(
     db: Session = Depends(get_db),
     user_id: int,
     user_in: UserUpdate,
-    current_user: UserInDB = Depends(get_current_active_superuser),
+    current_user: DBUser = Depends(get_current_active_superuser),
 ):
     """
     Update a user.
     """
-    user = crud.user.get(db, user_id=user_id)
+    user = crud.user.get(db, id=user_id)
     if not user:
         raise HTTPException(
             status_code=404,
             detail="The user with this username does not exist in the system",
         )
-    user = crud.user.update(db, user=user, user_in=user_in)
+    user = crud.user.update(db, db_obj=user, obj_in=user_in)
     return user

{{cookiecutter.project_slug}}/backend/app/app/api/api_v1/endpoints/utils.py

@@ -1,18 +1,19 @@
 from fastapi import APIRouter, Depends
-from pydantic.types import EmailStr
+from pydantic.networks import EmailStr
 
 from app.api.utils.security import get_current_active_superuser
 from app.core.celery_app import celery_app
-from app.models.msg import Msg
-from app.models.user import UserInDB
+from app.schemas.msg import Msg
+from app.schemas.user import User
+from app.models.user import User as DBUser
 from app.utils import send_test_email
 
 router = APIRouter()
 
 
 @router.post("/test-celery/", response_model=Msg, status_code=201)
 def test_celery(
-    msg: Msg, current_user: UserInDB = Depends(get_current_active_superuser)
+    msg: Msg, current_user: DBUser = Depends(get_current_active_superuser)
 ):
     """
     Test Celery worker.
@@ -23,7 +24,7 @@ def test_celery(
 
 @router.post("/test-email/", response_model=Msg, status_code=201)
 def test_email(
-    email_to: EmailStr, current_user: UserInDB = Depends(get_current_active_superuser)
+    email_to: EmailStr, current_user: DBUser = Depends(get_current_active_superuser)
 ):
     """
     Test emails.

{{cookiecutter.project_slug}}/backend/app/app/api/utils/security.py

@@ -9,8 +9,8 @@
 from app.api.utils.db import get_db
 from app.core import config
 from app.core.jwt import ALGORITHM
-from app.db_models.user import User
-from app.models.token import TokenPayload
+from app.models.user import User
+from app.schemas.token import TokenPayload
 
 reusable_oauth2 = OAuth2PasswordBearer(tokenUrl="/api/v1/login/access-token")
 
@@ -25,7 +25,7 @@ def get_current_user(
         raise HTTPException(
             status_code=HTTP_403_FORBIDDEN, detail="Could not validate credentials"
         )
-    user = crud.user.get(db, user_id=token_data.user_id)
+    user = crud.user.get(db, id=token_data.user_id)
     if not user:
         raise HTTPException(status_code=404, detail="User not found")
     return user

{{cookiecutter.project_slug}}/backend/app/app/crud/__init__.py

@@ -1 +1,10 @@
-from . import item, user
+from .crud_user import user
+from .crud_item import item
+
+# For a new basic set of CRUD operations you could just do
+
+# from .base import CRUDBase
+# from app.models.item import Item
+# from app.schemas.item import ItemCreate, ItemUpdate
+
+# item = CRUDBase[Item, ItemCreate, ItemUpdate](Item)

{{cookiecutter.project_slug}}/backend/app/app/crud/base.py

@@ -0,0 +1,57 @@
+from typing import List, Optional, Generic, TypeVar, Type
+
+from fastapi.encoders import jsonable_encoder
+from pydantic import BaseModel
+from sqlalchemy.orm import Session
+
+from app.db.base_class import Base
+
+ModelType = TypeVar("ModelType", bound=Base)
+CreateSchemaType = TypeVar("CreateSchemaType", bound=BaseModel)
+UpdateSchemaType = TypeVar("UpdateSchemaType", bound=BaseModel)
+
+
+class CRUDBase(Generic[ModelType, CreateSchemaType, UpdateSchemaType]):
+    def __init__(self, model: Type[ModelType]):
+        """
+        CRUD object with default methods to Create, Read, Update, Delete (CRUD).
+
+        **Parameters**
+
+        * `model`: A SQLAlchemy model class
+        * `schema`: A Pydantic model (schema) class
+        """
+        self.model = model
+
+    def get(self, db_session: Session, id: int) -> Optional[ModelType]:
+        return db_session.query(self.model).filter(self.model.id == id).first()
+
+    def get_multi(self, db_session: Session, *, skip=0, limit=100) -> List[ModelType]:
+        return db_session.query(self.model).offset(skip).limit(limit).all()
+
+    def create(self, db_session: Session, *, obj_in: CreateSchemaType) -> ModelType:
+        obj_in_data = jsonable_encoder(obj_in)
+        db_obj = self.model(**obj_in_data)
+        db_session.add(db_obj)
+        db_session.commit()
+        db_session.refresh(db_obj)
+        return db_obj
+
+    def update(
+        self, db_session: Session, *, db_obj: ModelType, obj_in: UpdateSchemaType
+    ) -> ModelType:
+        obj_data = jsonable_encoder(db_obj)
+        update_data = obj_in.dict(skip_defaults=True)
+        for field in obj_data:
+            if field in update_data:
+                setattr(db_obj, field, update_data[field])
+        db_session.add(db_obj)
+        db_session.commit()
+        db_session.refresh(db_obj)
+        return db_obj
+
+    def remove(self, db_session: Session, *, id: int) -> ModelType:
+        obj = db_session.query(self.model).get(id)
+        db_session.delete(obj)
+        db_session.commit()
+        return obj

{{cookiecutter.project_slug}}/backend/app/app/crud/crud_item.py

@@ -0,0 +1,34 @@
+from typing import List
+
+from fastapi.encoders import jsonable_encoder
+from sqlalchemy.orm import Session
+
+from app.models.item import Item
+from app.schemas.item import ItemCreate, ItemUpdate
+from app.crud.base import CRUDBase
+
+
+class CRUDItem(CRUDBase[Item, ItemCreate, ItemUpdate]):
+    def create_with_owner(
+        self, db_session: Session, *, obj_in: ItemCreate, owner_id: int
+    ) -> Item:
+        obj_in_data = jsonable_encoder(obj_in)
+        db_obj = self.model(**obj_in_data, owner_id=owner_id)
+        db_session.add(db_obj)
+        db_session.commit()
+        db_session.refresh(db_obj)
+        return db_obj
+
+    def get_multi_by_owner(
+        self, db_session: Session, *, owner_id: int, skip=0, limit=100
+    ) -> List[Item]:
+        return (
+            db_session.query(self.model)
+            .filter(Item.owner_id == owner_id)
+            .offset(skip)
+            .limit(limit)
+            .all()
+        )
+
+
+item = CRUDItem(Item)