The beginning of a validation library

Valvat_cache caches in a json file results of the VIES validation keeping it a couple of weeks

The PalindromeChecker gem provides a straightforward utility to determine whether a given text is a palindrome. It removes unnecessary characters like spaces, punctuation, and symbols, and normalizes case before performing the palindrome check. This makes it ideal for validating phrases, sentence...

This gem unions a server-side ActiveModel password strength validation plugin with a client-side password strength estimation

Provide a simple validation method and validator class for Ruby

Adds validation methods considering different country zip code formats. Currently, we can validate 130 countries.

Validating-Workflow is a finite-state-machine-inspired API for modeling and interacting with what we tend to refer to as 'workflow'. * nice DSL to describe your states, events and transitions * robust integration with ActiveRecord and non relational data stores * various hooks fo...

Generate attributes with strong types and validations.

contextual validations for controllers and wanna learn to do other stuff good too

DSL for variable scoping / encapsulation for readability and organisation, by means of block indents and explicit variable declarations. Useful when organising complex conditions such as procs (case-in-point: complex `... if: -> {}` Rails model validations

Hecks JSON Schema Validations

It sure would be awesome if ActiveResource actually allowed us to do client-side validation of our ActiveResource objects like their documentation promises: http://apidock.com/rails/ActiveResource/Base

It provides validation of URIs (URLs) to ActiveModel records and ActionControllers in Rails 3.

The Brazilian Business Tax ID (CNPJ) validation and formatting, more functions to come

Object validation library

A gem that handles your form and query validation in an elegant way.

Add a validation headers filter to your rails controller.

Validate an email address using RFC 822 pattern match regex regular expressions

Basic document validation

The Wechat Validator engine handles the Wechat server validation requests. 微信验证器引擎处理微信服务器的验证请求。