To comply with simple email validation to RFC5322.

Model level inline validation

Ruby wrapper for Experian Address Validation API

Email address validation using RFC 822 pattern matching regular expressions

Delegates validation between objects

Claricle provides a Ruby library for working with images, offering tools for image validation (PNG, SVG), format conversion, compression, and vector graphics processing. The name combines "clarity" and "particle", representing the clear validation of every pixel. It is built to integrate function...

Simple clean validation errors that can be used independently

Ajax validation

ShipEngine's easy-to-use REST API lets you manage all of your shipping needs without worrying about the complexities of different carrier APIs and protocols. We handle all the heavy lifting so you can focus on providing a first-class shipping experience for your customers at the best possible pri...

Common usage for Taiwan validation

Ernr builds on the power of Rails 3 validations. It lets you use validations to identify situations which are warnings rather than errors. It also lets you define a callback on the model which is executed after save if there are any warnings.

emailvalidation.io provides an email validation & verification API. Automate email validation & verification without any user interaction.

A notifier for form validation errors.

Find and report ActiveRecord validation errors.

Use Validation for Email in ruby

Translates the validations of model to the jQuery Validator

Translates the validations of model to the jQuery Validator

This is an improved input function for Ruby. Using this gem, you can easily get user input with real-time type validation, ensuring that the data provided is as expected, among other things. If you have any questions, check the documentation: https://github.com/barrosflavio/ruby_better_inpu...

Validate your ActiveAdmin resources through dry-validation

Declarative parameter definition and validation for Rails