Show the project hierarchy in the drop down list for new membership on user administration screen.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1401 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/helpers/users_helper.rb

@@ -23,6 +23,20 @@ module UsersHelper
                         [l(:status_locked), 3]], selected)
   end
   
+  # Options for the new membership projects combo-box
+  def projects_options_for_select(projects)
+    options = content_tag('option', "--- #{l(:actionview_instancetag_blank_option)} ---")
+    projects_by_root = projects.group_by(&:root)
+    projects_by_root.keys.sort.each do |root|
+      options << content_tag('option', h(root.name), :value => root.id, :disabled => (!projects.include?(root)))
+      projects_by_root[root].sort.each do |project|
+        next if project == root
+        options << content_tag('option', '&#187; ' + h(project.name), :value => project.id)
+      end
+    end
+    options
+  end
+  
   def change_status_link(user)
     url = {:action => 'edit', :id => user, :page => params[:page], :status => params[:status]}