Property types that add CHECK constraints to your DB and validations to your model. Data integrity FTW.

Paper-thin Facebook validation and signed request parsing Rails plugin

Gem to remove previously set validations

Adds ActiveModel validation for domain format.

ActiveModel validations for domains with fully localization support.

This gem is part of the Deployment and Orchestration for Puppet or DOP for short. dop_common is a library for the parsing and validation of DOP plan files.

error_messages_for_helper provides a simple helper to show ActiveRecord validation errors (just like old helper error_messages_for for Rails-2.3.x).

ElasticSearch Queries, gem that allows elastic creation of complex ES queries, and end up in hashes. Validation enabled. Uses eapi gem)

LiveValidation integration with default Rails form helpers and validation methods.

100% exclusive message for any ActiveModel validation error.

It provides basic command line tools for simply defining things like cross validations, factorial experimental design and basic statistics. All of this can be run in a distributed manner.

FiletypeValidation is a Ruby gem for validating file content types.

Flags is a framework for Ruby which allows the definition of command-line flags, which are parsed in and can be accessed smartly from within your Ruby code. This framework allows for numerous different flag types, and takes care of the process of type conversion and flag validation (type and val...

Builds forms with a standard template that has labels, hints, and validations

This gem allows model to have state, and based on that create wizard with step by step validations

This is an alpha version. Create a class implements from FluentValidator, then use rule_for method to register validators in its construction method.

To format validations made with typs.

Protect the foreign keys in your Rails models by checking the user_id of self against the user_id of all relations.

Form object helpers built on top of dry-validations

This gem for Ruby on Rails 4.0+ allows to create blocks for each field of the form. This allows to simplify syntax, show errors, add errors classes and validation attributes.