moving cost_type definition into plugin

init.rb

@@ -5,6 +5,7 @@ require 'view_projects_show_sidebar_bottom_hook'
 $LOAD_PATH << File.expand_path("../lib/redmine_widgets", __FILE__)
 require 'simple_table'
 require 'entry_table'
+require 'cost_types'
 
 Redmine::Plugin.register :redmine_reporting do
   name 'Reporting Plugin'

lib/redmine_widgets/cost_types.rb

@@ -0,0 +1,22 @@
+class Widget::CostTypes < Widget::Base
+  def render_with_options(options, &block)
+    @cost_types = options.delete(:cost_types)
+    @selected_type_id = options.delete(:selected_type_id)
+
+    super(options, &block)
+  end
+
+  def render
+    write contents
+  end
+
+  def contents
+    content_tag :div do
+      available_cost_type_tabs(@subject).map do |id, label|
+        type_selection = radio_button_tag("unit", id, id == @selected_type_id)
+        type_selection += label_tag "unit_#{id}", h(label)
+        type_selection
+      end.join("</br>")
+    end
+  end
+end