Extract Select

1 files changed, 57 insertions, 0 deletions

diff --git a/actionpack/lib/action_view/helpers/tags/select.rb b/actionpack/lib/action_view/helpers/tags/select.rb
new file mode 100644
index 0000000000..56d1dbfd38
--- /dev/null
+++ b/actionpack/lib/action_view/helpers/tags/select.rb
@@ -0,0 +1,57 @@
+module ActionView
+  module Helpers
+    module Tags
+      class Select < Base #:nodoc:
+        include FormOptionsHelper
+
+        def initialize(object_name, method_name, template_object, choices, options, html_options)
+          @choices = choices
+          @html_options = html_options
+
+          super(object_name, method_name, template_object, options)
+        end
+
+        def render
+          selected_value = @options.has_key?(:selected) ? @options[:selected] : value(@object)
+
+          # Grouped choices look like this:
+          #
+          #   [nil, []]
+          #   { nil => [] }
+          #
+          if !@choices.empty? && @choices.first.respond_to?(:last) && Array === @choices.first.last
+            option_tags = grouped_options_for_select(@choices, :selected => selected_value, :disabled => @options[:disabled])
+          else
+            option_tags = options_for_select(@choices, :selected => selected_value, :disabled => @options[:disabled])
+          end
+
+          select_content_tag(option_tags, @options, @html_options)
+        end
+
+        private
+
+        def select_content_tag(option_tags, options, html_options)
+          html_options = html_options.stringify_keys
+          add_default_name_and_id(html_options)
+          select = content_tag("select", add_options(option_tags, options, value(object)), html_options)
+          if html_options["multiple"]
+            tag("input", :disabled => html_options["disabled"], :name => html_options["name"], :type => "hidden", :value => "") + select
+          else
+            select
+          end
+        end
+
+        def add_options(option_tags, options, value = nil)
+          if options[:include_blank]
+            option_tags = "<option value=\"\">#{ERB::Util.html_escape(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('helpers.select.prompt', :default => 'Please select')
+            option_tags = "<option value=\"\">#{ERB::Util.html_escape(prompt)}</option>\n" + option_tags
+          end
+          option_tags.html_safe
+        end
+      end
+    end
+  end
+end