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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