下载资源只有贴吧资源可以下载，原因：其他资源的权限控制暂未实现，解决先直接返回true，讨论区主题...显示过早，解决：多显示几个数字

app/controllers/application_controller.rb

@@ -258,11 +258,13 @@ class ApplicationController < ActionController::Base
     if @attachment.container_type == "Memo"
       allowed = User.current.allowed_to?(:memos_attachments_download,nil,:global => true)
     elsif  @attachment.container_type == "Project"
-
+        return true
     elsif @attachment.container_type == "course"
-
+        return true
     elsif @attachment.container_type == "contest"
-
+        return true
+    else
+      return true
     end
 
     if allowed

app/views/messages/_project_show.html.erb

@@ -98,9 +98,9 @@
   <div class="memo-section" style="width: 100%;word-break: break-all;word-wrap: break-word;">
     <div class="memo-title <%= @topic.sticky? ? 'sticky' : '' %> <%= @topic.locked? ? 'locked' : '' %>" style="width: 83%;word-break: break-all;">
       <% if @project %>
-          <%= label_tag l(:field_subject) %>: <%= link_to @topic.subject.truncate(24, omission: '...'), project_boards_path(@topic.project),title: @topic.subject.to_s %>
+          <%= label_tag l(:field_subject) %>: <%= link_to @topic.subject.truncate(29, omission: '...'), project_boards_path(@topic.project),title: @topic.subject.to_s %>
       <% elsif @course %>
-          <%= label_tag l(:field_subject) %>: <%= link_to @topic.subject.truncate(24,omission:'...'), course_boards_path(@topic.course),title: @topic.subject.to_s %>
+          <%= label_tag l(:field_subject) %>: <%= link_to @topic.subject.truncate(29,omission:'...'), course_boards_path(@topic.course),title: @topic.subject.to_s %>
       <% end %>
     </div>
     <div class="memo-content">