What is the best tool or ORM to manage database in Fast API?

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Example Code

from typing import List

import databases
import sqlalchemy
from fastapi import FastAPI
from pydantic import BaseModel

# SQLAlchemy specific code, as with any other app
DATABASE_URL = "sqlite:///./test.db"
# DATABASE_URL = "postgresql://user:password@postgresserver/db"

database = databases.Database(DATABASE_URL)

metadata = sqlalchemy.MetaData()

notes = sqlalchemy.Table(
    "notes",
    metadata,
    sqlalchemy.Column("id", sqlalchemy.Integer, primary_key=True),
    sqlalchemy.Column("text", sqlalchemy.String),
    sqlalchemy.Column("completed", sqlalchemy.Boolean),
)


engine = sqlalchemy.create_engine(
    DATABASE_URL, connect_args={"check_same_thread": False}
)
metadata.create_all(engine)


class NoteIn(BaseModel):
    text: str
    completed: bool


class Note(BaseModel):
    id: int
    text: str
    completed: bool


app = FastAPI()


@app.on_event("startup")
async def startup():
    await database.connect()


@app.on_event("shutdown")
async def shutdown():
    await database.disconnect()


@app.get("/notes/", response_model=List[Note])
async def read_notes():
    query = notes.select()
    return await database.fetch_all(query)


@app.post("/notes/", response_model=Note)
async def create_note(note: NoteIn):
    query = notes.insert().values(text=note.text, completed=note.completed)
    last_record_id = await database.execute(query)
    return {**note.dict(), "id": last_record_id}

Description

I read FastAPI documentation, but still not clear which tools should use to manage database in FastAPI projects. encode/databases + SqlAlchemy or tortoise-orm?

Operating System

Linux, Windows

Operating System Details

No response

FastAPI Version

0.75.0

Python Version

3.7 +

Additional Context

No response

[yinziyan1206]

I use SqlModel and SqlAlchemy Core. I think it better to use the official ORM tool for FastAPI 😃

[Leon0824]

Try Prisma.

Define your schema in its Prisma language, and use its generator to generate whole pydantic / db hybrid models. Then import the models module into your project.