我正在使用Node.js，Mongoose和Koa开发RESTful API，并且对于模式和输入验证的最佳实践有些困惑。

目前，我对每种资源都有Mongoose和Joi模式。猫鼬模式仅包含有关特定资源的基本信息。例：

const UserSchema = new mongoose.Schema({
  email: {
    type: String,
    lowercase: true,
  },
  firstName: String,
  lastName: String,
  phone: String,
  city: String,
  state: String,
  country: String,
});

Joi模式包含有关对象的每个属性的详细信息：

{
  email: Joi.string().email().required(),
  firstName: Joi.string().min(2).max(50).required(),
  lastName: Joi.string().min(2).max(50).required(),
  phone: Joi.string().min(2).max(50).required(),
  city: Joi.string().min(2).max(50).required(),
  state: Joi.string().min(2).max(50).required(),
  country: Joi.string().min(2).max(50).required(),
}

当写入数据库时​​，Mongoose模式用于在端点处理程序级别创建给定资源的新实例。

router.post('/', validate, routeHandler(async (ctx) => {
  const userObj = new User(ctx.request.body);
  const user = await userObj.save();

  ctx.send(201, {
    success: true,
    user,
  });
}));

The Joi schema is used in validation middleware to validate user input. I have 3 different Joi schemas for each resource, because the allowed input varies depending on the request method (POST, PUT, PATCH).

async function validate(ctx, next) {
  const user = ctx.request.body;
  const { method } = ctx.request;
  const schema = schemas[method];

  const { error } = Joi.validate(user, schema);

  if (error) {
    ctx.send(400, {
      success: false,
      error: 'Bad request',
      message: error.details[0].message,
    });
  } else {
    await next();
  }
}

I am wondering if my current approach of using multiple Joi schemas on top of Mongoose is optimal, considering Mongoose also has built-int validation. If not, what would be some good practices to follow?

Thanks!