A Domain Specific Language for Validations written in pure Ruby.

Provides parsing, validation & accessors

Automatically pass attributes through Sanitize before validation

PORO validation mixin with no deps

simple validation

WADL validator for requests

A gem that verifies the integrity of a state history

Rails Validations for typically UK specific data

This Gem is Used for Validations URLs

Hash validation for 'options'-like methods.

Validations is a library for validating data structures.

Three level validation on email addresses for ActiveRecord.

Validations for european countries VAT numbers

ActiveModel validation for credit card number.

Allow for validation of only some attributes

A collection of various validators for Rails forms

Object validation inspired by RSpec.

Library to parse X12 messages and manipulate their loops, segments, fields, composites, and validation tables.

YAML files loader with validation

Simple validation library with virtus integration