Validator for CPF and CNPJ (brazilian tax numbers)

Wappler Extensions
,
#1

Custom extension to validate CNPJ and CPF (brazilian tax numbers).

/extensions/server_connect/modules/check_doc.hjson:

[
  {
    type: 'check_doc',
    module : 'check_doc',
    action : 'check',
    groupTitle : 'Validator',
    groupIcon : 'fas fa-check comp-data',
    title : 'CheckDoc @@var(name)@@',
    icon : 'fas fa-check comp-data',
    dataPickObject: true,
    usedModules: {
      node: {
        "cpf-cnpj-validator": "^1.0.3"
      }
    },
    properties : [
      {
        group: 'Check document',
        variables: [
          { name: 'name', optionName: 'name', title: 'Name', type: 'text', required: true, defaultValue: 'query', help: 'This will be the name for the output key and the tag used in the expression builder'},
          { name: 'doc_type', optionName: 'doc_type', title: 'Document type', required: true, 
            type: 'droplist', 
            values: [
              {title: 'CPF', value: 'cpf' },
              {title: 'CNPJ', value: 'cnpj' },
              {title: 'Any', value: 'any' }
            ], defaultValue: 'any',
            help: 'Choose the document type to validate.'
          },
          { name: 'document', optionName: 'document', title: 'Document number', type: 'text', serverDataBindings: true, required: true, defaultValue: '', help: 'Document number to validate, with or without dots (999.999.999-99, 99.999.999/0001-99).'}    
        ]
      },
      {
        group: 'Output',
        variables: [
          { name: 'output', optionName: 'output', title: 'Output', initValue: true, defaultValue: false, type: 'boolean'}
        ]
      }
    ]
  }
]

/extensions/server_connect/modules/check_doc.js:

const { cpf, cnpj } = require('cpf-cnpj-validator');
exports.check = async function (options) {
  const type = this.parse(options.doc_type);
  const document = this.parse(options.document);
  switch (type) {
    case 'cnpj':
      return cnpj.isValid(document);
    case 'cpf':
      return cpf.isValid(document);
    default:
      return cpf.isValid(document) || cnpj.isValid(document);
  }
}

PS: Is there a way to give the same threatment as out-of-box Validate action? If “false”, throw an error that is “catched” by the fronted, highlighting and displaying the error in the corresponding field?

4 Likes
#2

This may not be relevant, but in case you missed it - you can use regex expressions with Wappler’s validator. Eg you could use the expressions here without needing to create a custom extension.

#3

Regex can only check the format. This custom extension calculates the checksum digits using the library cpf-cnpj-validator.

1 Like