aiohttp_session_flash 0.0.4

Session flash messages for aiohttp.web

aiohttp_session_flash

The library provides flash messages for aiohttp.web on top of aiohttp_session.

“Flash messages” are simply a queue of string messages (or other JSON-serializable objects) stored in the session.

Installation

pip install aiohttp_session_flash

Usage

Add session_middleware and aiohttp_session_flash.middleware to the list of app’s middleware:

app = web.Application(
        middlewares=[
                aiohttp_session.session_middleware(EncryptedCookieStorage(b'x'*32)),
                aiohttp_session_flash.middleware,
        ]
)

Within the handler, pull and push flash messages as needed:

from aiohttp import web

from aiohttp_session_flash import flash, pop_flash


async def foo(request):
        flash(request, "Hello")
        flash(request, ["This", "works", "too"])
        return web.Response(body=b'Flashed some messages')

async def bar(request):
        for message in pop_flash(request):
                print(message)
        return web.Response(body=b'OK')

Template context processor

The template context processor is provided for template libraries that can use it:

aiohttp_mako_context_processors.setup(app, [
        ...
        aiohttp_session_flash.context_processor,
])

<ul>
% for message in get_flashed_messages():
        <li>${message}</li>
% endfor
</ul>

Contributing

Running tests

pip install -r requirements_test.txt
pytest