Formtastic Plugin for ClientSideValidaitons

StripAttributes automatically strips all ActiveRecord model attributes of leading and trailing whitespace before validation. If the attribute is blank, it strips the value to nil.

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...

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.

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

Turbolinks Plugin for ClientSideValidaitons

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.

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

ActiveRecord::Enum fire SQL request and bypass ActiveModel::Validations, this let you play with enum and validation

Another validation library

Use reflection to spec ActiveModel validations

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.

If you need a way to easily skip validations on some attributes and only in certain cases, this gem will allow you to do it in a clean and elegant way.

RailsAjaxFormhandler is a lightweight Javascript-plugin which submits your form automatically and displays server responded validation-errors by adding styles and error-messages to the invalid input fields.

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...

Ember Plugin for ClientSideValidaitons

HMAC Validation for Rails.

Ember.js validation add on (hai18n)