RELAX NG schema validation using Jing, a Java based RELAX NG validator that emits clear, detailed validation errors. ruby-jing validates XML documents by wrapping Jing's java command-line user interface.

PrettyValidation generate validation modules from database schema

Formtastic extension that does client side form validation

MobilityUniqueness extends the Mobility gem with locale-specific uniqueness validation for translated attributes in ActiveRecord models. It allows you to ensure that a given attribute, such as `name` in different locales, is unique within the specified locale. By using this va...

Extract validations from your database information

Validations for Argentinian specific information

Subvalid allows you to use a familiar syntax to define validator classes to validate plain objects. Rather than hard coding single validation logic into the objects themselves, different validation logic can be used depending on the context.

Handles rails validation errors foundation's way

Ruby SDK for MailSafePro Email Validation API. Robust and secure email validation and verification with batch processing, breach detection, and JWT authentication. GDPR compliant.

Server side validations for ember.js framework, model agnostic

Module which provides sexy validations for models.

CPF validation for ActiveModel and Rails

SpicyValidation overwrite model file that user would like to generate validation.

Allows easy determination of which validation rules apply to a given column, at the expense of increased verbosity

Generates: controller file with actions specified in arguments, schema file for param validation written using dry-validation gem, use case class for handling logic of the request, presenter class for serialization of objects, request rspec specs for proper testing

Yet another validation library

Adds active-record validations to a json format (to_arson) so that validations can be performed client side.

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.

Mount to an endpoint of your application, give it forms fields, and it'll return the validations errors/success in JSON. Really usefull when you want to add on-unblur or before-submit validations.

Hints for validation.