Function flash

src/quart/helpers.py:99–124

Add a message (with optional category) to the session store. This is typically used to flash a message to a user that will be stored in the session and shown during some other request. For example, .. code-block:: python @app.route('/login', methods=['POST']) async

(message: str, category: str = "message")

async def flash(message: str, category: str = "message") -> None:
    """Add a message (with optional category) to the session store.

    This is typically used to flash a message to a user that will be
    stored in the session and shown during some other request. For
    example,

    .. code-block:: python

        @app.route('/login', methods=['POST'])
        async def login():
            ...
            await flash('Login successful')
            return redirect(url_for('index'))

    allows the index route to show the flashed messages, without
    having to accept the message as an argument or otherwise.  See
    :func:`~quart.helpers.get_flashed_messages` for message retrieval.
    """
    flashes = session.get("_flashes", [])
    flashes.append((category, message))
    session["_flashes"] = flashes
    app = current_app._get_current_object()  # type: ignore
    await message_flashed.send_async(
        app, _sync_wrapper=app.ensure_async, message=message, category=category
    )


def get_flashed_messages(