评论的内容过长时不美观, 处理一下, 并处理管理评论时排序问题

app/assets/stylesheets/admin/posts.css.scss

@@ -35,7 +35,9 @@
   }
 
   .pre {
-    white-space: pre;
+    white-space: pre-wrap;
+    word-break: break-all;
+    word-wrap: break-word;
   }
 
 }

app/controllers/admin/comments_controller.rb

@@ -7,7 +7,7 @@ class Admin::CommentsController < ApplicationController
   end
 
   def index
-    @comments = @post.comments
+    @comments = @post.comments.order(created_at: :desc)
   end
 
   def destroy

app/views/admin/comments/index.html.slim

@@ -9,6 +9,7 @@
           th 名字
           th 邮箱
           th 内容
+          th 时间
           th 操作
       tbody
         - @comments.each do |comment|
@@ -18,6 +19,9 @@
               = mail_to comment.email
             td 
               p.pre #{comment.content}
+            td
+              = format_time(comment.created_at)
+
             td
               = link_to '回复', blog_path(@post), target: '_blank', class: 'edit-post-link'
               = link_to '删除', admin_post_comment_path(@post, comment), method: 'DELETE', 'data-confirm'=> '确认删除?'