Redmine

  # Renders a tree of projects as a nested set of unordered lists

  # The given collection may be a subset of the whole project tree

  # (eg. some intermediate nodes are private and can not be seen)

 def render_project_hierarchy_notifications(projects)

    s = ''

    if projects.any?

      ancestors = []

      original_project = @project

      projects.each do |project|

        # set the project environment to please macros.

        @project = project

        if (ancestors.empty? || project.is_descendant_of?(ancestors.last))

          s << "<ul class='projects mypage #{ ancestors.empty? ? 'root' : nil}'>\n"

        else

          ancestors.pop

          s << "</li>"

          while (ancestors.any? && !project.is_descendant_of?(ancestors.last))

            ancestors.pop

            s << "</ul></li>\n"

          end

        end

        classes = (ancestors.empty? ? 'root' : 'child mypage')

        s << "<li class='#{classes}'><label>#{check_box_tag 'notified_project_ids[]', project.id, @user.notified_projects_ids.include?(project.id)} #{h project.name}</label>"        

        ancestors << project

      end

      s << ("</li></ul>\n" * ancestors.size)

      @project = original_project

    end

    s.html_safe

  end

  <%= render_project_hierarchy_notifications(@user.projects.find(:all, :order => 'lft'))%>

ul.projects ul.mypage { border-left:none; }

ul.projects li.mypage { margin:0; }