How to raise custom exceptions in a FastAPI middleware? Question: I have a simple FastAPI setup with a custom middleware class inherited from BaseHTTPMiddleware. Inside this middleware class, I need to terminate the execution flow under certain conditions. So, I created a custom exception class named CustomError and raised the exception. from fastapi import FastAPI, …
How to re-route requests to a different URL/endpoint in FastAPI? Question: I am trying to write a middleware in my FastAPI application, so that requests coming to endpoints matching a particular format will be re-routed to a different URL, but I am unable to find a way to do that since request.url is read-only. I …
FastAPI – How to get the response body in Middleware Question: Is there any way to get the response content in a middleware? The following code is a copy from here. @app.middleware("http") async def add_process_time_header(request: Request, call_next): start_time = time.time() response = await call_next(request) process_time = time.time() – start_time response.headers["X-Process-Time"] = str(process_time) return response Asked …
How to write a custom FastAPI middleware class Question: I have read FastAPI’s documentation about middlewares (specifically, the middleware tutorial, the CORS middleware section and the advanced middleware guide), but couldn’t find a concrete example of how to write a middleware class which you can add using the add_middleware function (in contrast to a basic …
Flask middleware for specific route Question: I made API Server with Python Flask-RESTful. My system use token authentication for verify permission. So, I added middleware for verify token. For example, code like this, [middleware.py] class Test(object): def __init__(self, app): self.app = app def __call__(self, environ, start_response): print("gogo") return self.app(environ, start_response) [app.py] from flask import Flask …
How can I enable CORS on Django REST Framework Question: How can I enable CORS on my Django REST Framework? the reference doesn’t help much, it says that I can do by a middleware, but how can I do that? Asked By: Julio Marins || Source Answers: The link you referenced in your question recommends …
