升级我的应用程序到Rails 5.不知道是怎么打的包错误的安装

Question

我改变了轨线在我的应用程序的Gemfile中来自：

gem 'rails', '4.2.3' 

要：

gem 'rails', '5.0.0' 

每轨有关升级过程的文档。然后我跑了bundle update rails。然后我碰到一个包版：

Bundler could not find compatible versions for gem "railties": 
    In Gemfile: 
dotenv-rails (= 2.0.2) was resolved to 2.0.2, which depends on 
    railties (~> 4.0) 

rails (= 5.0.0) was resolved to 5.0.0, which depends on 
    railties (= 5.0.0) 

据我所知，railties是rails的一部分吗？这似乎很奇怪。幽默的错误，我说：

gem 'railties', '5.0.0' 

然后bundle update railties产量：

Bundler could not find compatible versions for gem "activerecord": 
    In snapshot (Gemfile.lock): 
    activerecord (= 4.2.3) 

    In Gemfile: 
    annotate was resolved to 2.7.2, which depends on 
     activerecord (< 6.0, >= 3.2) 

rails (= 5.0.0) was resolved to 5.0.0, which depends on 
    activerecord (= 5.0.0) 

我按照rabbithole并添加：

gem 'activerecord', '5.0.0' 

bundle update activerecord产量...

You have requested: 
    railties = 5.0.0 

The bundle currently has railties locked at 4.2.3. 
Try running `bundle update railties` 

T他甚至更新活跃记录的原因是我可以更新railties ......它以圈子形式运行我。

如果我运行bundle update我完全的Gemfile现在（的ActiveRecord和railties补充）：

Bundler could not find compatible versions for gem "railties": 
    In Gemfile: 
    devise (~> 3.5.6) was resolved to 3.5.6, which depends on 
     railties (< 5, >= 3.2.6) 

    rails (= 5.0.0) was resolved to 5.0.0, which depends on 
     railties (= 5.0.0) 

    rails (= 5.0.0) was resolved to 5.0.0, which depends on 
     railties (= 5.0.0) 

我承认我不是在这个过程中，总亲。有什么我失踪？有没有人在升级过程中遇到类似的情况？

Answer 1

第一个错误意味着bundle update dotenv-rails，如果您限制版本，请确保它是一个支持railties的版本。5.根据您的更新，看起来您也在更旧的设计。因此，请尝试同时更新两者：

bundle update dotenv-rails devise，请确保您阅读dotenv-rails中的更新说明，并设计和更改需要在代码中进行更改的任何内容。

我的建议：先去支持rails 5的最接近的版本，所以对于设计，这是4.0.3和dotenv-rails 2.1.2。在你的Gemfile中设置这个限制，然后你bundle update。只有在您成功更新这个宝石后才会更新导轨。添加任何其他创建相同过程的宝石。