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Email validator based on DNS
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| require 'resolv' | |
| class EmailValidator < ActiveModel::EachValidator | |
| def validate_each(record, attribute, value) | |
| if Resolv::DNS.new.getresources(value.split("@").last, Resolv::DNS::Resource::IN::MX).empty? | |
| record.errors[attribute] << (options[:message] || "does not have a valid domain") | |
| end | |
| rescue Resolv::ResolvError, Resolv::ResolvTimeout | |
| record.errors[attribute] << (options[:message] || "does not have a valid domain") | |
| end | |
| end |
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