ActiveRecord extension. Allows to save record without calling callbacks and validations.

A gem that provides credit card validation. It is basically a ruby port of the javascript credit card validator by Thomas Fuchs (madrobby) (http://github.com/madrobby/creditcard_js).

Adds validation methods to ActiveModel for validating dates and times. Works with multiple ORMS.

Config. Defined as a class. Used as an instance. Support for inheritance and composition. Lazy instantiation. Thread-safe. Command-style DSL. Validation layer. Support for YAML, TOML, JSON, __END__, ENV. Extremely simple to define. Extremely simple to use.

Plugs directly in the the Google's native C++ [libphonenumber](https://github.com/google/libphonenumber) for extemely _fast_ and _robust_ phone number parsing, validation, and formatting. On average, most methods are 40x t0 50x faster than other Ruby phone number libraries.

TLSPretense provides a set of tools to test SSL/TLS certificate validation. It includes a library for generating certificates and a test framework for running tests against a client by intercepting client network traffic."

CPF validation for ActiveModel

Scrivener removes the validation responsibility from models and acts as a filter for whitelisted attributes.

CNPJ validation for ActiveModel

Validatable is a library for adding validations. Now compatible with Ruby 1.9.2+

This plugin gives you the option to not have your custom validation error message prefixed with the attribute name

Implements the common view pattern by which a list of messages are shown at the top, often a combination of flash messages and ActiveRecord validation issues on one or more models.

Rack middleware for Weixin apps: message validation/parser/generator

Interactors are a pattern for structuring your business logic into units. They have a flexible context that they pass between them, which makes them easy-to-write, but hard-to-understand after you've written them. Much of this confusion comes from not knowing what the interactor is supposed to ta...

Generates modules that provide conventional value semantics for a given set of attributes. The behaviour is similar to an immutable `Struct` class, plus extensible, lightweight validation and coercion.

Post/zip code formatting and validation for the UK, US, CA and more.

Cloudformation tasks for apply(create/update), delete, recreate on stack along with validations on templates

Model.validates { presence_of :name }

Schema-based validation and coercion for Ruby data structures, inspired by Prismatic/schema for Clojure.

A Rails plugin that adds an ActiveRecord validation helper to do range and start/end date checking in.