module CGI::HtmlExtension

"VALUES" => [["1", "Foo"], ["2", "Bar", true], "Baz"])
radio_group("NAME" => "name",

"VALUES" => [["foo"], ["bar", true], "baz"])
radio_group("NAME" => "name",

"VALUES" => ["foo", "bar", "baz"])
radio_group("NAME" => "name",

# Baz
# Bar
# Foo
radio_group("name", ["1", "Foo"], ["2", "Bar", true], "Baz")

# baz
# bar
# foo
radio_group("name", ["foo"], ["bar", true], "baz")

# baz
# bar
# foo
radio_group("name", "foo", "bar", "baz")

to have more than one radiobutton in a group checked.
This works the same as #checkbox_group(). However, it is not valid

Generate a sequence of radio button Input elements, as a String.

def radio_group(name = "", *values)
  if name.kind_of?(Hash)
    values = name["VALUES"]
    name = name["NAME"]
  end
  values.collect{|value|
    if value.kind_of?(String)
      radio_button(name, value) + value
    else
      if value[-1] == true || value[-1] == false
        radio_button(name, value[0],  value[-1]) +
        value[-2]
      else
        radio_button(name, value[0]) +
        value[-1]
      end
    end
  }.join
end