Add Some SexyValidation.

Flags is a framework for Ruby which allows the definition of command-line flags, which are parsed in and can be accessed smartly from within your Ruby code. This framework allows for numerous different flag types, and takes care of the process of type conversion and flag validation (type and val...

To format validations made with typs.

Protect the foreign keys in your Rails models by checking the user_id of self against the user_id of all relations.

This is a very basic (and untested!) RubyGem to simplify web form creation, validation and processing. It is designed for use with the Sinatra framework.

Checks email using RFC2822 compliant parser, Requests MX records for server validation. Supports caching

Adds extra validation to rendered markdown

FragmentedValidation allows your model to only validate selected attributes.

= dm-is-published This plugin makes it very easy to add different states to your models, like 'draft' vs 'live'. By default it also adds validations of the field value. Originally inspired by the Rails plugin +acts_as_publishable+ by <b>fr.ivolo.us</b>. == Installation # Add G...

Gem for simplify display of validation messages and flash.

Local Apple receipt validation.

UPS address validation gem

Calls and parses various maps APIs for accurate address validation and geocoding

Array validations for Rails (e.g. Postgres jsonb columns)

A gem that handles your form and query validation in an elegant way.

Provide a simple validation method and validator class for Ruby

Versions validations and comparisons!!!

Get validation error from database constraint.

Cave Forms encapsulate validation logic into an object with that single responsibility

Imports delimited text files to Active Record or Datamapper, with validations.