Class: EmailValidator

Inherits:
ActiveModel::EachValidator
  • Object
show all
Defined in:
lib/valid_email2.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.disposable_emails ⇒ Object 



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# File 'lib/valid_email2.rb', line 8

def self.disposable_emails
  @@disposable_emails ||= YAML.load_file(File.expand_path("../../disposable_emails.yml",__FILE__))
end

Instance Method Details

#default_options ⇒ Object 



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# File 'lib/valid_email2.rb', line 12

def default_options
  { regex: true, disposable: false, mx: false }
end

#error(record, attribute) ⇒ Object 



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# File 'lib/valid_email2.rb', line 51

def error(record, attribute)
  record.errors.add(attribute, options[:message] || :invalid)
end

#validate_each(record, attribute, value) ⇒ Object 



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# File 'lib/valid_email2.rb', line 16

def validate_each(record, attribute, value)
  return unless value.present?
  options = default_options.merge(self.options)
  email = Mail::Address.new(value)

  if email.domain && email.address == value
    tree = email.send(:tree)

    # Valid email needs to have a dot in the domain
    unless tree.domain.dot_atom_text.elements.size > 1
      error(record, attribute)
    end
  else
    error(record, attribute)
  end

  if options[:disposable]
    if self.class.disposable_emails.include?(email.domain)
      error(record, attribute)
    end
  end

  if options[:mx]
    mx = []

    Resolv::DNS.open do |dns|
      mx.concat dns.getresources(email.domain, Resolv::DNS::Resource::IN::MX)
    end

    unless mx.any?
      error(record, attribute)
    end
  end
end