部署rails应用程序期间heroku中的弃用警告[重复]答案

【问题标题】：DEPRECATION WARNING in heroku during deploying rails app [duplicate]部署rails应用程序期间heroku中的弃用警告[重复]
【发布时间】：2012-11-16 02:20:05
【问题描述】：

可能重复：
Rails 2.3-style plugins and deprecation warnings running task in Heroku

DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support
 for these plugins will be removed in Rails 4.0. Move them out and bundle them i
n your Gemfile, or fold them in to your app as lib/myplugin/* and config/initial
izers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonr
ails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required
)> at /app/Rakefile:7)

显示3次，有时显示2次是什么意思？有什么特殊含义吗？ 如何为 db:migrate 解决这个问题

【问题讨论】：

标签： ruby-on-rails ruby-on-rails-3 heroku ruby-on-rails-3.2

【解决方案1】：

Heroku 在 slug 编译期间“注入”一些插件。

-----> Rails plugin injection
       Injecting rails_log_stdout
       Injecting rails3_serve_static_assets

见Rails 2.3-style plugins and deprecation warnings running task in Heroku

【讨论】：