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在部署到 Heroku 时，我收到一组关于 vendor/plugins 文件夹的弃用警告（见下文）。我的里面有一个 .gitkeep 声明，没有别的。有什么我需要做的吗？

2012-12-13T02:56:59+00:00 app[web.1]: 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 in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:5)
2012-12-13T02:56:59+00:00 app[web.1]: 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 in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:5)
2012-12-13T02:56:59+00:00 app[web.1]: 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 in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:5)
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2 回答 2

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Heroku 已经指出了这一点，他们已经在为 Rails 4 开发它

Heroku 通过注入插件来工作，它会导致这种情况发生

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

在 Heroku 中运行任务的 Rails 2.3 样式插件和弃用警告

于 2012-12-13T17:16:27.160 回答
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I just noticed a workaround that Heroku has now.

   Injecting plugin 'rails_log_stdout'
   Injecting plugin 'rails3_serve_static_assets'
   Add 'rails_12factor' gem to your Gemfile to skip plugin injection
于 2013-08-29T18:48:26.200 回答