trustieforge/app/views/courses/_set_course_time.html.erb

<% 
	id = "finish_course_#{course.id}"
	display = (course.teacher.id == User.current.id || User.current.admin?)
%>

<% if display #如果课程已结束%>
	<% linkPath = course_endTime_timeout?(course) ? restartcourse_course_path(course) :  finishcourse_course_path(course, format: :js) %>
	<% desc = course_endTime_timeout?(course) ? '重启' :  '关闭' %>

	<%= link_to "#{desc}", linkPath, :remote => true, :method => :post, :id => id, :confirm => ("确定要#{desc}课程？") %>
<% else %>
	<!-- 关闭课程block -->
<% end %>