Joi Regex is not recognized as Regex Pattern

问题

I'm trying to make a validation rule for password field that it should consists of the following:

Must have a number
Must contain at least one upper-case
Must contain at least one lower-case
Must contain any of the following symbols [@$!]
Should be at 8 to 20 characters only.

Here's the regex pattern I use: (?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[$@$!#.])[A-Za-z\d$@$!%*?&.]{8,20}

Tested on https://regexr.com/

Here's the Joi validation:

password: Joi.string()
.regex(
  '/(?=.*[a-z])(?=.*[A-Z])(?=.*d)(?=.*[$@$!#.])[A-Za-zd$@$!%*?&.]{8,20}/'
)
.required()
.min(8)
.max(20)

The error stacktrace:

{ AssertionError [ERR_ASSERTION]: pattern must be a RegExp
    at internals.String.regex (E:\nodeprojects\voting-system\voting-server\node_modules\joi\lib\types\string\index.js:120:14)
    at Object.<anonymous> (E:\nodeprojects\voting-system\voting-server\src\routes\user.js:16:6)
    at Module._compile (module.js:649:30)
    at Object.Module._extensions..js (module.js:660:10)
    at Module.load (module.js:561:32)
    at tryModuleLoad (module.js:501:12)
    at Function.Module._load (module.js:493:3)
    at Module.require (module.js:593:17)
    at require (internal/module.js:11:18)
    at files.map (E:\nodeprojects\voting-system\voting-server\node_modules\hapi-auto-route\lib\auto-route.js:21:27)
    at Array.map (<anonymous>)
    at Object.module.exports.getRoutes (E:\nodeprojects\voting-system\voting-server\node_modules\hapi-auto-route\lib\auto-route.js:19:18)
    at Object.register (E:\nodeprojects\voting-system\voting-server\node_modules\hapi-auto-route\index.js:16:32)
    at <anonymous>
  generatedMessage: false,
  name: 'AssertionError [ERR_ASSERTION]',
  code: 'ERR_ASSERTION',
  actual: false,
  expected: true,
  operator: '==' }

回答1:

I know it has been about 2 years but I think coming late is better than never coming 🤣🤣.

You just have to put the pattern inside a RegExp()

This is how I edited your code :)

const pattern = "/(?=.*[a-z])(?=.*[A-Z])(?=.*d)(?=.*[$@$!#.])[A-Za-zd$@$!%*?&.]{8,20}/";

password: Joi.string()
.regex(RegExp(pattern)) // you have to put it in this way and it will work :)
.required()
.min(8)
.max(20)

I hope it helps you!

来源：https://stackoverflow.com/questions/51596779/joi-regex-is-not-recognized-as-regex-pattern

标签

node.js

hapijs

joi