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wireframe/uuid_validator.rb

Created April 25, 2012 19:21
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uuid_validator.rb
class UuidValidator < ActiveModel::EachValidator
VALID_UUID_REGEX = /^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$/
def validate_each(record, attribute, value)
record.errors[attribute] << (options[:message] || "is invalid") unless UuidValidator.valid_uuid?(value)
end
def self.valid_uuid?(value)
!!VALID_UUID_REGEX.match(value.to_s)
end
end
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