modern-di-flask

Modern-DI integration for Flask.

Quickstart

import typing

from flask import Flask
from modern_di import Container, Group, Scope, providers
from modern_di_flask import FromDI, inject, setup_di


class Settings:
    def __init__(self) -> None:
        self.greeting = "hello"


class Dependencies(Group):
    settings = providers.Factory(scope=Scope.APP, creator=Settings)


app = Flask(__name__)


@app.route("/hello/<name>")
@inject
def hello(name: str, settings: typing.Annotated[Settings, FromDI(Dependencies.settings)]) -> str:
    return f"{settings.greeting}, {name}"


# call setup_di AFTER registering routes (required for auto_inject)
setup_di(app, Container(groups=[Dependencies], validate=True))

Pass auto_inject=True to setup_di to inject every view without a per-view @inject. See the documentation.