Rails - Mar 2010 - Better way to concatenate options to collection_select?

I''ve just been through 4 pages of similar threads, but nothing quite
satisfying.

What I''m trying to achieve:

<select>
  <option value="-1">Please select</option>
  <option value="0">ALL</option>
  <option value="1">Forum 1</option>
  <option value="2">Forum 2</option>
  ...
<select>

The way I''m currently doing it:

# Plugin
class FakeModel
  def initialize(hash)
    @hash = hash
  end

  def id
    @hash[:id]
  end

  def method_missing(meth_id)
    @hash[meth_id]
  end
end

# Controller
@forums = [
  FakeModel.new(:id => -1, :name => ''Please select''),
  FakeModel.new(:id => 0, :name => ''ALL'')
] + Forum.all(:order => ''name'')

# View
<%= collection_select :thread, ''forum_id'', @forums, :id,
:name %>

Just wondering if there''s a more natural (and undocumented) way of
doing
it...
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On Mar 7, 6:41 pm, Jack o''Shanter
<li...-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:
> # View
> <%= collection_select :thread, ''forum_id'', @forums,
:id, :name %>
>
> Just wondering if there''s a more natural (and undocumented) way of
doing
> it...
In a small experiment,

collection_select :thread, ''forum_id'', @forums, :id, :name,
:prompt =>
true, :include_blank => ''All''

seems to work for me. If that doesn''t work out, i''d use select
instead
of collection_select - collection_select is trying to make one use
case of select easier, but if you''re jumping through hoops then
it''s
no longer easier than just using select.

Fred
> --
> Posted viahttp://www.ruby-forum.com/.
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Frederick Cheung wrote:
> In a small experiment,
> 
> collection_select :thread, ''forum_id'', @forums, :id,
:name, :prompt =>
> true, :include_blank => ''All''
> 
> seems to work for me. If that doesn''t work out, i''d use
select instead
> of collection_select - collection_select is trying to make one use
> case of select easier, but if you''re jumping through hoops then
it''s
> no longer easier than just using select.
Overwriting ActionView::Helpers::InstanceTag#add_options() could also 
work:

module ActionView
  # Find original in 
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_view/helpers/form_options_helper.rb
  module Helpers
    class InstanceTag
      private
        def add_options(option_tags, options, value = nil)
          if options[:start_with]
            options[:start_with].reverse_each do |element|
              option_text, option_value = option_text_and_value(element)
              selected_attribute = ''
selected="selected"'' if
options[:selected] && option_value_selected?(option_value, 
options[:selected])
              option_tags = "<option 
value=\"#{html_escape(option_value.to_s)}\"#{selected_attribute}>#{html_escape(option_text.to_s)}</option>\n"
+ option_tags
            end
          end
          if options[:end_with]
            options[:end_with].reverse_each do |element|
              option_text, option_value = option_text_and_value(element)
              selected_attribute = ''
selected="selected"'' if
options[:selected] && option_value_selected?(option_value, 
options[:selected])
              option_tags += "<option 
value=\"#{html_escape(option_value.to_s)}\"#{selected_attribute}>#{html_escape(option_text.to_s)}</option>\n"
            end
          end
          if options[:include_blank]
            option_tags = "<option
value=\"\">#{options[:include_blank]
if options[:include_blank].kind_of?(String)}</option>\n" +
option_tags
          end
          if value.blank? && options[:prompt]
            prompt = options[:prompt].kind_of?(String) ? 
options[:prompt] : I18n.translate(''support.select.prompt'',
:default =>
''Please select'')
            "<option
value=\"\">#{prompt}</option>\n" + option_tags
          else
            option_tags
          end
        end
    end
  end
end


Now I could do:

:start_with => [[''- Select category -'', -1], [''-
All -'', 0]]

However, select() might be a wiser approach.
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