Client side validation with parsley and simple_form.

Phone number validation forked from MOBI Wireless Management

A ruby gem library for that offers utilities, version constraint parsing and validation.

Postcode validation module

Presence at least one validation for ActiveModel

Set of rich helpers for email validation

Build UI tests for manual validation across multiple devices.

Automatically pass attributes through Sanitize before validation

Integrates sequel validations and sequel hooks into couchbase model.

Param checker adds a before filter for each api to do the validation

Easy validation and processing of Paypal IPN payments

Adds new validations to AR

WADL validator for requests

Description of StrongestValidations.

Flexible and modular validations for ActiveRecord models

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.