Files
fastapi/docs/src/handling_errors/tutorial005.py
Sebastián Ramírez 62af6e0eeb Separate Pydantic's ValidationError handler and improve docs for error handling (#273)
*  Implement separated ValidationError handlers and custom exceptions

*  Add tutorial source examples and tests

* 📝 Add docs for custom exception handlers

* 📝 Update docs section titles
2019-05-29 16:27:55 +04:00

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922 B
Python

from fastapi import FastAPI, HTTPException
from fastapi.exception_handlers import (
http_exception_handler,
request_validation_exception_handler,
)
from fastapi.exceptions import RequestValidationError
from starlette.exceptions import HTTPException as StarletteHTTPException
app = FastAPI()
@app.exception_handler(StarletteHTTPException)
async def custom_http_exception_handler(request, exc):
print(f"OMG! An HTTP error!: {exc}")
return await http_exception_handler(request, exc)
@app.exception_handler(RequestValidationError)
async def validation_exception_handler(request, exc):
print(f"OMG! The client sent invalid data!: {exc}")
return await request_validation_exception_handler(request, exc)
@app.get("/items/{item_id}")
async def read_item(item_id: int):
if item_id == 3:
raise HTTPException(status_code=418, detail="Nope! I don't like 3.")
return {"item_id": item_id}