Validates CURP and test it with matchers in a simple way.

ActiveRecord callback which handle the name duplication in your model.

Some description for validates-gem

Rails 2 and Rails 3 plugin. Validates e-mail address format (RFC2822 and RFC3696) and whitelist/blacklist the domain part.

Validates Host, Domain and IP and test it with matchers in a simple way.

Validate iban

Adds ActiveModel validators for common instant messaging services like Skype and AIM.

Validations for making ActiveRecord objects immutable.

Validates IPv4 and IPv6 addresses

Rails plugin that provides a validates_ip_format_of method to ActiveRecord models. IPs are validated by regexp. IP validation. Validate IP.

Validates uniqueness of has_many children

ActiveModel validator that ensures Word-tags hasn't been accidentally pasted into WYSIWYG attributes.

Validate phone numbers against E.164 format with this Ruby on Rails gem

Add to Rails the possibility to validate the quantity of an associate model

Validates mexican RFC and test it with matchers in a simple way.

provides a simple way to validate hashes(params, json etc)

This library helps validate that an attribute is a subset of a specified set

Validates Telephone for Brazil and United States and test it with matchers in a simple way.

ValidatesTimeliness mongoid ORM compatability.

Makes boolean validations a little cleaner.