Scans ActiveRecord models and adds automatic validations based on null, max length etc.

Ajax validation

emailvalidation.io provides an email validation & verification API. Automate email validation & verification without any user interaction.

named_validations names to arguments of active_model's validates method.

Extension for default Rails validations. Adds some useful methods.

A credit card validation library to check offline validity of any AMEX, Discover, MasterCard, Visa cards using length and Luhn algorithm.

Hints for validation.

Common validations for G5 Integrations

Client Side Validations for Rails 4

Simple client validation messages

DataMapper plugin for performing validations on data models

Validate graphql-ruby arguments easily with dry-validation

Regex is a versatile Ruby library designed to simplify form validation by providing a collection of regular expressions tailored for common form fields. Whether you're building a web application, validating user input, or processing form submissions, this library offers a set of regex patterns th...

ActiveModel child model validations delegater.

Adds soft validations (warnings) to ActiveModel

Isolate and automate your Rails validations.

Implement easily angular validation via form_for and form_tag helpers

Provides really basic postcode validation (intended for eCommerce platforms).

Extends activerecord validations with helpers

PngConform provides a comprehensive PNG, MNG, and JNG file validation library in pure Ruby. It validates file structure, chunk validity, CRC checksums, zlib compression, and profile conformance. Built with a layered architecture using BinData for binary parsing, Lutaml::Model for domain models, a...