error-handling - 如何在Joi中为正则表达式设置自定义消息

Question

当我验证graphql参数时，我在密码字段中收到了这样的错误消息。

"password" with value "" fails to match the required pattern: /^(?=\\S*[a-z])(?=\\S*[A-Z])(?=\\S*\\d)(?=\\S*[^\\w\\s])\\S{8,30}$/"

我不想在错误消息中显示正则表达式模式。因此，我尝试为密码字段设置自定义错误消息，但仍显示正则表达式模式。

import Joi from "joi";

export default Joi.object().keys({
  email: Joi.string().email().required().label("Email"),
  username: Joi.string().alphanum().min(4).max(20).required().label("Username"),
  name: Joi.string().min(4).max(256).required().label("Name"),
  password: Joi.string()
    .min(8)
    .regex(/^(?=\S*[a-z])(?=\S*[A-Z])(?=\S*\d)(?=\S*[^\w\s])\S{8,30}$/)
    .required()
    .label("Password")
    .messages({
      "string.min": "Must have at least 8 characters",
      "object.regex": "Must have at least 8 characters",
    }),
});

我认为这不是通过 object.regex选择正则表达式。请帮忙。

Answer 1

要知道抛出什么错误，可以调试错误对象(通过记录错误对象)，然后找到错误的type。
例:

const Joi = require('@hapi/joi');

const joiSchema = Joi.object().keys({
  password: Joi.string()
    .min(8)
    .regex(/^(?=\S*[a-z])(?=\S*[A-Z])(?=\S*\d)(?=\S*[^\w\s])\S{8,30}$/)
    .required()
    .label("Password")
    .messages({
      "string.min": "Must have at least 8 characters",
      "object.regex": "Must have at least 8 characters",
      "string.pattern.base": "enter your custom error here..."
    })
});

const validationResult = joiSchema.validate({ password: "2" }, { abortEarly: false });
console.log(validationResult.error.details.map(errDetail => errDetail.type), validationResult.error);

输出 ["string.min", "string.pattern.base"]。 details由于string.min和string.pattern.base而有2个错误，并且 abortEarly设置为false。