ruby-on-rails - Heroku：RubyGem 版本错误：rails(2.3.15 not = 2.3.14)

Question

当然，你们都听说过 Rails 中需要更新的最新安全漏洞。我目前使用的是 2.3.14 版本的 Rails，因此尝试更新到 2.3.15（修补版本）。

在我的本地机器上，这个过程真的很顺利。但是在将更改推送到 Heroku 并等待部署之后，我的应用程序没有启动。它在日志中说

RubyGem version error: rails(2.3.15 not = 2.3.14)

不，怎么会这样？我的Gemfile说

gem 'rails', '~> 2.3.15'

我Gemfile.lock说

GEM
  specs:
    rails (2.3.15)

最后，Heroku 告诉我

Installing rails (2.3.15)

真的，问题出在哪里？其他人有这个问题吗？

解决方案

查尔斯的答案包括解决方案，即将in更新RAILS_GEM_VERSION为.2.3.15config/environment.rb

如果您有同样的烦恼，请立即使用建议的解决方案之一。已知 Rails 应用程序损坏的案例！

score 0 · Accepted Answer

It seems like you also need to do change RAILS_GEM_VERSION to 3.2.15 in environment.rb:

If you find yourself having to do the whole upgrading process over again, you can follow these steps:

Run your tests and make sure everything works
Open up a new branch through git (git checkout -b new_rails)
Change Rails 3.2.15 in your Gemfile
Change RAILS_GEM_VERSION to '3.2.15' in environment.rb
Run bundle update rails
Run the tests and see if everything still works
If not, reverse back to the old branch by doing git checkout master; optionally delete the new branch by doing git branch -D new_rails