الأخطاء وحدود التحقق

from fastapi import FastAPI, HTTPException
from fastapi.testclient import TestClient
app = FastAPI()
@app.get("/items/{item_id}")
def item(item_id: int):
    if item_id != 1:
        raise HTTPException(status_code=404, detail="Item not found")
    return {"id": 1}
with TestClient(app) as client:
    missing = client.get("/items/2")
    invalid = client.get("/items/not-an-integer")
    print(missing.status_code, missing.json())
    print(invalid.status_code, invalid.json()["detail"][0]["loc"])

404 {'detail': 'Item not found'}
422 ['path', 'item_id']

ينتج الغياب 404 والنوع 422 بموقع المسار قبل البحث.

from typing import Annotated
from fastapi import FastAPI, Query
from fastapi.exceptions import RequestValidationError
from fastapi.responses import JSONResponse
from fastapi.testclient import TestClient
app = FastAPI()
@app.exception_handler(RequestValidationError)
async def invalid_request(request, error):
    fields = [list(item["loc"]) for item in error.errors()]
    return JSONResponse(status_code=422, content={"error": "invalid_request", "fields": fields})
@app.get("/count")
def count(quantity: Annotated[int, Query(gt=0)]): return {"quantity": quantity}
with TestClient(app) as client:
    response = client.get("/count?quantity=0")
    print(response.status_code, response.json())

422 {'error': 'invalid_request', 'fields': [['query', 'quantity']]}

يعرض الرمز والموقع فقط دون القيمة أوالسياق الداخلي.