| 1 | import createError from "http-errors";
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| 2 |
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| 3 | import { Pet } from "../models";
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| 4 |
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| 5 | /**
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| 6 | * 中间件
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| 7 | * 根据 petId 加载 pet
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| 8 | *
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| 9 | * @param {import("koa").Context} ctx koa context
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| 10 | * @param {import("koa").Next} next koa next
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| 11 | */
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| 12 | export default async (ctx, next) => {
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| 13 | const { petId } = ctx.params;
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| 14 | ctx.state.pet = await Pet.get(petId);
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| 15 | if (!ctx.state.pet) {
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| 16 | throw new createError.NotFound(`pet ${petId} not found`);
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| 17 | }
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| 18 | await next();
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| 19 | };
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