Validate SEO-tag format

This Gem is Used for Validations URLs

Allow for validation of only some attributes

Validates Cnpj

Validates CPF

Simple gem helpful in validating standard credit card forms

Help you discover errors early.

Validate HTML files as they leave your app by rack or by mail or by turbo-stream

Add Japanese validators

Automatically adds validations to ActiveRecord models that match your database constraints

Inspired by Airbnb blog post https://medium.com/airbnb-engineering/large-scale-payments-systems-and-ruby-on-rails-bfe5b89f6f4 - by including a module in any of your classes, you can validate the type and presence of a method's parameters.

ValidateMyRoutes provides a way to annotate Sinatra routes and validate parameters before executing the route

Validates the given string

Provides a clean DSL to validate params for controller actions.

Simple, powerful, and constraint-based validation

EachValidator that adds a parent model's association's validation errors to the parent model

Validates CNPJ and test it with matchers in a simple way.

Brazilian zipcode validations for ActiveRecord, integrated with correios-cep gem.

The purpose of this gem is to validate countrycodes in ISO 3166-1 alpha-2 format

Validates CPF and test it with matchers in a simple way.