class ActiveLdap::Schema::Syntaxes::Boolean

def normalize_value(value)
  case value
  when true, "1"
    "TRUE"
  when false, "0"
    "FALSE"
  else
    value
  end
end

def type_cast(value)
  case value
  when "TRUE"
    true
  when "FALSE"
    false
  else
    value
  end
end

def validate_normalized_value(value, original_value)
  if %w(TRUE FALSE).include?(value)
    nil
  else
    _("%s should be TRUE or FALSE") % original_value.inspect
  end
end