socialforge/app/views/layouts/_join_exit_project.html.erb

<div class="pr_info_join fl">
   <!--关注项目-->
  <% if ( !(User.current.member_of? @project) && User.current.login?) %>   <!--added by linchun-->
      <span><%= watcher_link_for_project(@project, User.current) %></span>
  <% end %>
  <!--加入项目 -->
  <% if ( !(User.current.member_of? @project) && User.current.login?) %>
      <%= join_in_project_link(@project, User.current) %>
  <% end %>
  <!--退出项目-->
  <% if User.current.admin? || User.current.allowed_to?({:controller => 'projects', :action => 'settings'}, @project)  %>
      <%= link_to "<span class='pr_setting'></span>#{l(:button_configure)}".html_safe, settings_project_path(@project), :class => "pr_join_a" %>
      <%= link_to "<span class='#{get_project_type_css(@project_type_new)}'></span>#{text}".html_safe,"javascript:void(0)" ,:onClick => "show_window();", :class => "pr_join_a",:id => "setting_project_type"%>
  <% end %>
</div>