zhao-zhu/blog_1 — comment on commit 32a3b8def11fc455f2d5f4c98b586f899b7bbc00
File:  line 0
By zhaoguobin:

在```app/helpers/posts_helper.rb```中添加join_tags方法替换```app/views/posts/show.html.erb```中tags显示的逻辑