SimpleForm Plugin for ClientSideValidations

An implementation of the Command Pattern for Ruby with ActiveModel::Validations inspired by the interactor gem. Rich support for attributes, callbacks, and validations, and thread safe performance methods.

Validations mixin for Ruby objects and support for Hanami

Validations for Active Storage (presence)

xlsx spreadsheet generation with charts, images, automated column width, customizable styles and full schema validation. Axlsx helps you create beautiful Office Open XML Spreadsheet documents ( Excel, Google Spreadsheets, Numbers, LibreOffice) without having to understand the entire ECMA spec...

This is a Domain Name manipulation library for Ruby. It can also be used for cookie domain validation based on the Public Suffix List.

Interpol is a toolkit for working with API endpoint definition files, giving you a stub app, a schema validation middleware, and browsable documentation.

Machinery is a systems management toolkit for Linux. It supports configuration discovery, system validation, and service migration. It's based on the idea of a universal system description.

Mongoid Plugin for ClientSideValidations

Phone number validation

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.

This gem preps a new Rails app with some of the best Rails gems and Jquery sweetness available( Twitter-Bootstrap, Devise, CanCan, Rails Admin, Spreadsheet, ) Not only does it takes care of the installation of these gems, it also extends your scaffolds to give aesthetically improved views. Furthe...

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.

RSpec matches for Mongoid models, including association and validation matchers.

Does validations, associations, scopes, filters, pagination, counter cache, request cache, and nested queries. Using a YAML schema file, which supports default values, data types, and security levels for each key.

ActiveValidators is a collection of ActiveModel/ActiveRecord validations

Advanced ActiveModel email validation with MX lookups, domain blacklisting and disposable email blocking

The validation APIs help you validate data. Check if an E-mail address is real. Check if a domain is real. Check up on an IP address, and even where it is located. All this and much more is available in the validation API.

Rack::Cache is suitable as a quick drop-in component to enable HTTP caching for Rack-based applications that produce freshness (expires, cache-control) and/or validation (last-modified, etag) information.

A small and efficient validation library for Rails and anything that uses Ruby.