Quart-DB is a Quart extension that provides managed connection(s) to database(s).

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  • License: MIT License (MIT)
  • Author: pgjones
  • Requires: Python >=3.9
  • Provides-Extra: docs, erdiagram, psycopg, sqlite
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Project description

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Quart-DB is a Quart extension that provides managed connection(s) to postgresql or sqlite database(s).

Quickstart

Quart-DB is used by associating it with an app and a DB (via a URL) and then utilising the g.connection connection,

from quart import g, Quart, websocket
from quart_db import QuartDB

app = Quart(__name__)
db = QuartDB(app, url="postgresql://user:pass@localhost:5432/db_name")

@app.get("/<int:id>")
async def get_count(id: int):
    result = await g.connection.fetch_val(
        "SELECT COUNT(*) FROM tbl WHERE id = :id",
        {"id": id},
    )
    return {"count": result}

@app.post("/")
async def set_with_transaction():
    async with g.connection.transaction():
        await db.execute("UPDATE tbl SET done = :done", {"done": True})
        ...
    return {}

@app.get("/explicit")
async def explicit_usage():
     async with db.connection() as connection:
         ...

Contributing

Quart-DB is developed on GitHub. If you come across an issue, or have a feature request please open an issue. If you want to contribute a fix or the feature-implementation please do (typo fixes welcome), by proposing a merge request.

Testing

The best way to test Quart-DB is with Tox,

$ pip install tox
$ tox

this will check the code style and run the tests.

Help

The Quart-DB documentation is the best places to start, after that try searching stack overflow or ask for help on gitter. If you still can’t find an answer please open an issue.

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