Rails 5 validate CPF

Question

Hello, I’m a beginner in Ror. I have a form with field for CPF and need to validate whether it is valid or not before saving the record.

I tried different Gems like: Gem'cpf_cnpj', Gem 'brcpfcnpj' and 'validates_cpf_cnpj', but following the readme on github, they all gave some kind of error, perhaps by the compatibility of ruby or Rails.

My last attempt was to use a Ruby code and create a custom validate, but I was also unsuccessful.

Does anyone have any solution using Rails 5?

Answer 1

Using the Gem: CPF/CNPJ

Note the use of the require

I used it to test with Rails 5.0.6 and ruby 2.3.1p112

The same worked perfectly, can be used other Gems also.

You can use the resources of callback and do a validation before saving the data before_save.

http://api.rubyonrails.org/classes/ActiveRecord/Callbacks.html