fastapi-boilerplate/app/main.py

from fastapi import Depends, FastAPI
from fastapi.middleware.cors import CORSMiddleware
from sqlalchemy.orm import Session
from schemas import schemas
import database
import crud

app = FastAPI()
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"]
)


# Dependency
def get_db():
    db = database.SessionLocal()
    try:
        yield db
    finally:
        db.close()


@app.get("/")
async def root():
    return {"message": "Hello World"}


@app.get("/items/{item_id}", response_model=schemas.Item)
async def get_item(
    *,
    db: Session = Depends(get_db),
    item_id: int
):
    return crud.item.get(db, item_id)


@app.get("/items/", response_model=list[schemas.Item])
async def get_items(
    skip: int = 0,
    limit: int = 100,
    db: Session = Depends(get_db)
):
    return crud.item.get_multi(db, skip=skip, limit=limit)


@app.post("/items/", response_model=schemas.Item)
async def create_item(
    item: schemas.ItemCreate,
    db: Session = Depends(get_db)
):
    return crud.item.create(db=db, item=item)


@app.put("/items/{item_id}", response_model=schemas.ItemUpdate)
async def update_item(
    item: schemas.ItemUpdate,
    db: Session = Depends(get_db)
):
    return crud.item.update(db=db, item=item)


@app.delete("/items/{item_id}")
async def delete_item(
    *,
    item: schemas.ItemUpdate,
    db: Session = Depends(get_db),
    item_id: int
):
    return crud.remove(item_id)