为多个 fastify 路由设置共享模式答案

【问题标题】：setting shared schema for multiple fastify routes为多个 fastify 路由设置共享模式
【发布时间】：2022-10-01 15:09:25
【问题描述】：

我有以下路线

export default async function (fastify) {
  // fastify routes here...
  fastify.get(
    \'/\',
    {
      schema: {
        params: {
          type: \'object\',
          properties: {
            id: {
              type: \'number\',
              description: \'configuration id\',
            },
          },
        },
      },
    },
    async (req) => {
      console.log(req.params);
      return {};
    },
  );
}

// Prefix for fastify autoload
export const autoPrefix = `/configuration/:id/jobs`;

如何在该函数中为我的所有路由设置参数模式，这样我就不会复制我的参数模式：

{
  params: {
    type: \'object\',
    properties: {
      id: {
        type: \'number\',
        description: \'configuration id\',
      },
    },
  },
}

我知道我可以做到：

const params = {
  type: \'object\',
  properties: {
    id: {
      type: \'number\',
      description: \'configuration id\',
    },
  },
};
fastify.get(
  \'/\',
  {
    schema: {
      params,
    },
  },
  async (req) => {
    console.log(req.params);
    return {};
  },
);

但是询问是否有一种方法我不需要为每条路线都这样做

标签： fastify

【解决方案1】：

您可以使用onRoute hook

const fastify = require('fastify')({ logger: true })

const params = {
  type: 'object',
  properties: {
    id: {
      type: 'number',
      description: 'configuration id'
    }
  }
}

fastify.addHook('onRoute', function hook (routeOptions) {
  if (!routeOptions.schema) {
    routeOptions.schema = {}
  }

  if (!routeOptions.schema.params && routeOptions.path.includes(':id')) {
    routeOptions.schema.params = params
  }
})

fastify.get('/:id', async (request, reply) => {
  return { hello: 'world' }
})
fastify.register(async function plugin (instance, opts) {
  instance.post('/foo', async (request, reply) => {
    return request.body
  })
}, { prefix: '/:id' })

fastify.ready()

【讨论】：