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

Formtastic Plugin for ClientSideValidaitons

Mongoid Plugin for ClientSideValidations

Several methods in ActiveRecord skip validations, callbacks, or both. In my extremely humble but also extremely correct opinion, it's too easy to accidentally use these. Do Not Want kills those methods dead so you won't cut yourself on them: >> User.new.update_attribute(:foo, 5) DoNotWa...

Adds several handy expectations for testing ActiveRecord model validations, similar to what Shoulda provides.

Parameter Validation and Type Coercion for Rails

Turbolinks Plugin for ClientSideValidaitons

Store Rails validations as JSON to serve via api and drive complex validation logic.

To ensure Validations that continue to have issues are addressed by developers. This is done by logging the failure. When a specific failure continues to be an issue, a developer can look into the problem.

A Rake task investigates the application's models definition, then tells you unique validations that do not have DB indexes.

Adds type validation for classes with ActiveModel::Validations.

Provides an ActiveModel validation that checks if an attribute represents a legal BSON::ObjectId .

Live validator is a Rails Guilded (http://github.com/midas/guilded/tree/master) component that will reflect ActiveRecord validations and use them to live validate forms. Live validator uses the Live Validation (http://www.livevalidation.com) JavaScript library to accomplish this task. It also...

Live validator is a Rails Guilded (http://github.com/midas/guilded/tree/master) component that will reflect ActiveRecord validations and use them to live validate forms. Live validator uses the Live Validation (http://www.livevalidation.com) JavaScript library to accomplish this task. It also...

Automatically pull validations out of your database and apply them to your models

Easy validation of option keys and their values. Installation and usage is very simple. You find all the information you need on my homepage listed below.

Another validation library

Automate the writing of validations, relations in files and specs. Create boilerplate validation in models, specs, migrations. This specs are generated based on rspec, shoulda-matchers and factorygirl

Declare ActiveModel validations fluently

Use reflection to spec ActiveModel validations