credit_card_validations

The gem has no external dependencies, making it easy to integrate without bloating projects, as highlighted in its philosophy.

Includes ActiveModel validators for straightforward credit card number validation in Rails models, shown in usage examples like validates :number, credit_card_number: {brands: [:amex, :maestro]}.

Allows adding or removing brand definitions via methods like add_brand, supporting custom or regional card types without modifying core code.

Provides a factory to generate random, valid credit card numbers for specific brands, useful for testing, as demonstrated with CreditCardValidations::Factory.random(:amex).