How can I integrate SQLAlchemy with FastAPI?

How can I integrate SQLAlchemy with FastAPI?

To integrate SQLAlchemy with FastAPI, you need to set up a database connection and create models.

What are the steps to set up the database connection?

First, install SQLAlchemy and a database driver. Then, create a database URL and use it to create a session.

Can you show me a code example?

Sure! Here's a simple example:

from fastapi import FastAPI
from sqlalchemy import create_engine, Column, Integer, String
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker

DATABASE_URL = "sqlite:///./test.db"

engine = create_engine(DATABASE_URL)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
Base = declarative_base()

class User(Base):
    __tablename__ = "users"
    id = Column(Integer, primary_key=True, index=True)
    name = Column(String, index=True)

Base.metadata.create_all(bind=engine)

app = FastAPI()

How do I create a new user in the database?

You can create a new user by defining a POST endpoint in FastAPI that uses the session to add a new User instance.