@root-systems/redux-form-validators/src/add-validator.js

Simple validations with redux-form

import React from 'react'
import { formatMessage, prepare, memoize } from './helpers'
import { INVALID_MSG } from './format'


export default function addValidator ({ validator, defaultMessage, defaultMsg }) {
  defaultMsg = formatMessage(defaultMsg || defaultMessage) || INVALID_MSG

  return memoize(function (options={}) {
    let msg = formatMessage(options.msg || options.message) || defaultMsg

    return prepare(options.if, options.unless, options.allowBlank, function (value, allValues) {
      if (!validator(options, value, allValues)) {
        return msg
      }
    })
  })
}