node.js - 如何在 hapi.js 中自定义验证错误响应？

Question

使用 config.validate option on a route 时并且请求由于验证而失败，hapi 返回如下错误:

{
    "statusCode": 400,
    "error": "Bad Request",
    "message": "child \"weight\" fails because [\"weight\" is required]",
    "validation": {
        "source": "payload",
        "keys": [
            "weight"
        ]
    }
}

有没有办法发送不同格式的验证错误？

Answer 1

自定义输出有两种方式:

1. 使用 failAction config.validate 中的属性:

   config: {
       validate: {
           params: {
               name: Joi.string().min(3).max(10)
           },
           failAction: function (request, reply, source, error) {
   
               error.output.payload.message = 'custom';
               return reply(error).code(400);
           }
       }
   }
   

2. 使用 onPreResponse扩展点:

   server.ext('onPreResponse', function (request, reply) {
   
       var response = request.response;
       if (response.isBoom && response.data.name === 'ValidationError') {
           response.output.payload.message = 'custom';
       }
   
       return reply.continue();
   });
   

见 API documentation了解更多详情。