A Ruby Library for dealing with validation cryptocurrency adresses.

LHS ia a Rails-Gem, providing an ActiveRecord like interface to access HTTP-JSON-Services from Rails Applications. Special features provided by this gem are: Multiple endpoint configuration per resource, active-record-like query-chains, scopes, error handling, relations, request cycle cache, batc...

Provides a form field validation JavaScript library for your Rails application. Built for use with jQuery and Twitter Bootstrap 3. Source code: https://github.com/nghuuphuoc/bootstrapvalidator

Keep your code DRY by inferring column validations from table properties! Automagically validate presence, length, numericality, inclusion and uniqueness of ActiveRecord backed columns.

Checks required env variables and its format using dotenv and .env.sample files. Sample files include validation documentation which is interpreted and used to validate your environment.

Opt-in validations for your ActiveRecord models based on your MySQL database constraints, including text field size, UTF-8 encoding issues, and NOT NULL constraints.

ElasticGraph gem that provides JSON Schema validation.

Decode iTunes OS X and iOS receipts without remote server-side validation by using the Apple Inc Root Certificate.

A development toolkit for Ruby with several small/cohesive abstractions (monads, enums, business logic, data validation...) to empower your development workflow - It's totally free of dependencies.

A small wrapper around ActiveModel Validations.

ActiveModel validation that checks email addresses against a blacklist of trash-mail providers

ActiveModel email validation. Checks MX records, sub address, regex, whitelisted and blacklisted check

This gem can parse values, validations, documentation, types, groups and conditions of parameters from your puppet modules

This gem helps to create wizard like interfaces in terminal applications, has support for nesting and value validation

Separate ActiveModel::Validations for warnings.

AddressValidate is a ruby wrapper for integrating with the USPS address validation api.

Validations for immutable Ruby objects

Full-featured type system for any ruby project. Supports custom type definition, type validation, type casting and type categorizing. Provides a set of commonly used type categories and general purpose types. Has a flexible and simplest type definition toolchain.

Combine email validation and transformations to produce canonical email addresses.

DataMapper plugin providing better error messages handling.