NewMonarch (owner)

Revisions

gist: 9567 Download_button fork
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## Tests

 def test_grouped_options_for_select_with_array

      assert_dom_equal(

        "<optgroup label=\"North America\"><option value=\"US\">United States</option>\n<option value=\"Canada\">Canada</option></optgroup><optgroup label=\"Europe\"><option value=\"GB\">Great Britain</option>\n<option value=\"Germany\">Germany</option></optgroup>",

        grouped_options_for_select([

           ["North America",

               [['United States','US'],"Canada"]],

           ["Europe",

               [["Great Britain","GB"], "Germany"]]

         ])

      )

    end

 
    def test_grouped_options_for_select_with_selected_and_prompt

      assert_dom_equal(

          "<option value=\"\">Choose a product...</option><optgroup label=\"Hats\"><option value=\"Baseball Cap\">Baseball Cap</option>\n<option selected=\"selected\" value=\"Cowboy Hat\">Cowboy Hat</option></optgroup>",

          grouped_options_for_select([["Hats", ["Baseball Cap","Cowboy Hat"]]], "Cowboy Hat", "Choose a product...")

      )

    end

    

    def test_optgroups_with_with_options_with_hash

      assert_dom_equal(

         "<optgroup label=\"Europe\"><option value=\"Denmark\">Denmark</option>\n<option value=\"Germany\">Germany</option></optgroup><optgroup label=\"North America\"><option value=\"United States\">United States</option>\n<option value=\"Canada\">Canada</option></optgroup>",

         grouped_options_for_select({'North America' => ['United States','Canada'], 'Europe' => ['Denmark','Germany']})

      )

    end

 
 
 
def grouped_options_for_select(grouped_options, selected_key = nil, prompt = nil)

  str = String.new

  unless prompt.nil?

    prompt.kind_of?(String) ? prompt : 'Please select'

    str += content_tag :option, prompt, :value => ""

  end

  grouped_options = grouped_options.sort if grouped_options.is_a? Hash

  for group in grouped_options

    str += content_tag :optgroup, options_for_select(group[1], selected_key), :label => group[0]

  end

  str

end

 
# Sample usage (Array):

#   grouped_options = [

#    ['North America',

#      ['United States','Canada']],

#    ['Europe',

#      ['Denmark','Germany','France']]

#   ]

#   grouped_options_for_select(grouped_options)

#

# Sample usage (Hash):

#   grouped_options = {

#    'North America' => ['United States', 'Canada'],

#    'Europe' => ['Denmark','Germany','France']

#   }

#   grouped_options_for_select(grouped_options)