My custom validator in AdonisJs is not working - customvalidator

Question

I followed the Adonis documentation about how to make a custom validator. I made it so simple just for testing.
When I made the "post", I receive the message "cpf is not defined as a validation rule".
The codes:
Cpf.js
const Validator = use('Validator')
const cpfValidation = async (data, field, message, args, get) => {
const value = get(data, field)
console.log('This line is on console!')
if (!row) {
throw message
}
}
Validator.extend('cpf', cpfValidation)
User.js
'use strict'
class User {
get validateAll() {
return true
}
get rules() {
return {
name: 'required',
lastname: 'required',
email: 'required|email|unique:users',
cpf: 'cpf',
birthday: 'required',
password: 'required|min:6|max:20'
}
}
}
module.exports = User
The result:
https://i.imgur.com/J5L8Y0O.png
Any idea?

Answer 1

After breaking my head a little, I found the solution.
First of, I have to install the adonis provider validation:
adonis install #adonisjs/validator
And put it in the list of providers inside the start/app.js:
const providers = [
'#adonisjs/validator/providers/ValidatorProvider'
]
Then I create a new provider by:
adonis make:provider CustomProvider
It gonna create a new provider on the folder "providers" in root.
My code for this class is:
'use strict'
const { ServiceProvider } = require('#adonisjs/fold')
class CustomValidator extends ServiceProvider {
async isCpfCorrect(data, field, message, args, get) {
const cpf = get(data, field);
//It will be validated by "unique" validation, if value is null
if(!cpf){
return
}
/*
ALL MY LOGIC SHOULD BE HERE...
*/
}
register() { }
boot() {
const Validator = use('Validator');
Validator.extend('cpf', this.isCpfCorrect);
}
}
module.exports = CustomValidator
Then I have to add this provider in the list of providers of start/app.js:
const path = require('path')
const providers = [
'#adonisjs/framework/providers/AppProvider',
'#adonisjs/auth/providers/AuthProvider',
'#adonisjs/bodyparser/providers/BodyParserProvider',
'#adonisjs/cors/providers/CorsProvider',
'#adonisjs/lucid/providers/LucidProvider',
'#adonisjs/mail/providers/MailProvider',
'#adonisjs/framework/providers/ViewProvider',
'#adonisjs/validator/providers/ValidatorProvider',
path.join(__dirname, '..', 'providers', 'CustomValidator')
]
Then I will be able to use my provider in validation:
'use strict'
class User {
get validateAll() {
return true
}
get rules() {
return {
name: 'required',
lastname: 'required',
email: 'required|email|unique:users',
cpf: 'required|cpf' <--------------- here is my custom provider for cpf,
birthday: 'required',
password: 'required|min:6|max:20'
}
}
}
module.exports = User
All of these I found in the doc:
https://adonisjs.com/docs/4.1/service-providers
and
https://adonisjs.com/docs/4.1/extending-adonisjs
Cheers.