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from dataclasses import dataclass
from litestar import Litestar, post
from litestar.plugins.problem_details import ProblemDetailsConfig, ProblemDetailsException, ProblemDetailsPlugin
@dataclass
class PurchaseItem:
item_id: int
quantity: int
@post("/purchase")
async def purchase(data: PurchaseItem) -> None:
# Logic to check if the user has enough credit to buy the item.
# We assume the user does not have enough credit.
raise ProblemDetailsException(
type_="https://example.com/probs/out-of-credit",
title="You do not have enough credit.",
detail="Your current balance is 30, but that costs 50.",
instance="/account/12345/msgs/abc",
extra={"balance": 30},
)
problem_details_plugin = ProblemDetailsPlugin(ProblemDetailsConfig())
app = Litestar(route_handlers=[purchase], plugins=[problem_details_plugin])
# run: /purchase --header "Content-Type: application/json" --request POST --data '{"item_id": 1234, "quantity": 2}'
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