班级/项目帖子锁定回复的，已有回复的二级回复按钮未屏蔽

app/views/users/_message_replies.html.erb

@@ -24,6 +24,8 @@
                       <%=render :partial=> "praise_tread/praise", :locals => {:activity=>comment, :user_activity_id=>comment.id,:type=>"reply"}%>
                     </span>
                   <% if type == 'Message' %>
+                    <% topic = comment.root %>
+                    <% if !topic.locked? && authorize_for('messages', 'reply') %>
                     <span style="position: relative" class="fr mr20">
                         <%= link_to(
                                     l(:button_reply),
@@ -33,6 +35,7 @@
                                     :title => l(:button_reply)) %>
                       <span id="reply_iconup_<%=comment.id %>" class="reply_iconup02" style="display: none"> ︿</span>
                     </span>
+                    <% end %>
                     <% if comment.course_destroyable_by?(User.current) || comment.destroyable_by?(User.current) %>
                       <%= link_to(
                                   l(:button_delete),