ActiveRecord style validations for Liquid content in your ActiveRecord models. See the README to get the lowdown.

Verify the existence of an email address.

Validation library

Encapsulates FoxyCart SSO, datafeed, and cart validation protocols

validation_examples_matcher provides rspec matcher testing validations with examples.

Validate your ActiveRecord models on the client, showing their error and success messages by providing a validation controller.

ActiveModel/ActiveRecord Validation Collection For Mainly Japanese

This code is meant to be used by developers who are attempting to build web applications on AWS but wish to run client-side testing and validation.

Configurator for Ruby Applications with some validation and sugars.

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.

Hat-Trick brings together jQuery, validation_group, and Ajax to make multi-step forms awesome. It tries to insulate you from this complexity by providing a simple yet powerful DSL for defining the steps of your form and their behavior.

Ruby config library with schema validation, default values and templating

Rumale::ModelSelection provides model validation techniques, such as k-fold cross-validation, time series cross-validation, and grid search, with Rumale interface.

Provides an extensible hook for adding custom html attributes to input elements based on validation rules defined in your model.

A Validation framework for creating validation profiles, allowing for the separation & reuse of validation logic from the object being validated.

Validations mixin for Ruby objects and support for Lotus

Validates translated attributes accessed with globalized accessors

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

Provides a DSL for common validation formats like Date, Array, DateTime etc.

Valid form submission based on the HTML5 validation on the form itself