1.游客进入班级，资源出现了两个入口

app/helpers/courses_helper.rb

@@ -63,6 +63,7 @@ module CoursesHelper
     # searchTeacherAndAssistant(project).count
   end
 
+  # 统计数目
   def show_nav?(count)
     count == 0 ? true : false
   end
@@ -807,11 +808,12 @@ module CoursesHelper
     link.html_safe
   end
 
+  # 可以查看到资源库的资源
   def visable_attachemnts_incourse course
     return[] unless course
     result = []
     course.attachments.each do |attachment|
-      if (attachment.is_public? && attachment.is_publish == 1) ||User.current == attachment.author ||User.current.allowed_to?(:as_teacher,course)|| (User.current.member_of_course?(course) && attachment.is_publish == 1) || User.current.admin?
+      if attachment.is_public? && attachment.is_publish == 1 || User.current == attachment.author || User.current.allowed_to?(:as_teacher,course) || (User.current.member_of_course?(course) && attachment.is_publish == 1) || User.current.admin?
         result << attachment
       end
     end

app/views/layouts/base_courses.html.erb

@@ -1,6 +1,7 @@
 <%# course_model %>
-<%# course_file_num = visable_attachemnts_incourse(@course).count%>
-<% course_file_num = Attachment.where(:container_type => "Course", :container_id => @course.id).count %>
+<%# course_file_num = Attachment.where(:container_type => "Course", :container_id => @course.id).count %>
+
+<% course_file_num = visable_attachemnts_incourse(@course).count%>
 <% is_teacher = User.current.logged? && (User.current.admin? || User.current.allowed_to?(:as_teacher,@course)) %>
 <% homework_num = visable_course_homework @course %>