A simple library that allows you to write middlewares that run in Django and well as Flask.
- Run
cd library && python setup.py bdist_wheelto generate files required for installation - Run
pip install -r requirements.txtto install the library
- For Django:
cd dj_sample && python manage.py runserver - For Flask:
cd flask_sample && python server.py
# middleware.py
from dj_flask.middleware import (
BaseMiddleWare,
CustomRequest,
CustomNext,
CustomResponse,
)
class CommonMiddlware(BaseMiddleWare):
def intercept(self, request: CustomRequest, next: CustomNext) -> CustomResponse:
if not (request.path == "/even-or-odd" and request.method == "GET"):
return next
try:
num = int(request.query["num"])
except:
return CustomResponse("Bad request", status=400)
else:
json_str = dumps({"isEven": True if num % 2 == 0 else False})
return CustomResponse(
json_str,
mimetype="application/json",
status=200,
)# examples/django/app/settings.py
MIDDLEWARE = [
'task.middleware.CommonMiddleware',
'...'
]# examples/flask/server.py
from middleware import CommonMiddlware
from flask import Flask
app = Flask('DemoApp')
app.wsgi_app = CommonMiddlware(app.wsgi_app)-
http://localhost:8000/even-or-odd?num=22
- The middleware returns
{"isEven": true}because num is even
- The middleware returns
-
http://localhost:8000/even-or-odd?num=23
- The middleware returns
{"isEven": true}because num is odd
- The middleware returns
-
http://localhost:8000/even-or-odd?num=foo
- The middleware returns Bad request (400) because num is not an integer.
-
http://localhost:8000/even-or-odd
- The middleware returns Bad request (400) because num is missing.
-
http://localhost:8000/hello (Middleware passes it to the controller.)
- The controller returns "Hello world" because the middleware passed the request.
