A very simple wrapper for the PostCodeAnywhere Bank Account Validation API.

Provides an easy way to add model-based validations to excel files.

Auto generating ActiveModel validations for hashes

Language Independent Validation Rules. Implements 2.0 specification

adds a uniqueness validator for globalize3 translated models

A Guilded (http://github.com/midas/guilded/tree/master) component that will reflect ActiveRecord validations and use them to live validate forms.

Little gem that take advantage of Roo gem and Rails ActiveModel validation methods to read and validate the content of a spreadsheet

This gem wraps the guards.js jQuery validation library as a Rails asset gem.

iTunes In-App Purchase and Subscription Receipt Analysis and Validation

JAXP based XML Validation

Plugin allowing to auto build and validate associated records and merge validation errors

This library is a wrapper for the Konto API (https://www.kontoapi.de/). It provides a validation method for models that checks if a given account number and bank code represent a valid combination.

Generates Rails models from the target database... magically! Validations and associations included.

This gem helps you to create real validation for email, not just a simple regex

A mail gem based validator for rails

A high-level IO library that provides validation, type conversion, and more for command-line interfaces. HighLine also includes a complete menu system that can crank out anything from simple list selection to complete shells with just minutes of work.

This RubyGem allows you to prevent particular database fields from being changed after an Active Record object is created. A validation error occurs on updates if an attribute of a model object is different from its value in the database.

This RubyGem allows you to prevent particular database fields from being changed after an Active Record object is created. A validation error occurs on updates if an attribute of a model object is different from its value in the database.

A Ruby on Rails library to help with mass database operations like insert, update, save, validations, etc (much faster than typical ActiveRecord Interactions

Merb plugin that provides a Form Builder that will wrap your bound fields with a field div, integrated with the model validation