fastapi/docs_src/handling_errors/tutorial005.py at master · pedromeli/fastapi

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from fastapi import FastAPI, Request, status
from fastapi.encoders import jsonable_encoder
from fastapi.exceptions import RequestValidationError
from fastapi.responses import JSONResponse
from pydantic import BaseModel
app = FastAPI()
@app.exception_handler(RequestValidationError)
async def validation_exception_handler(request: Request, exc: RequestValidationError):
    return JSONResponse(
        status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
        content=jsonable_encoder({"detail": exc.errors(), "body": exc.body}),
class Item(BaseModel):
    title: str
    size: int
@app.post("/items/")
async def create_item(item: Item):
    return item

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