bcrypt错误：Devy ruby​​ 2.0和rails 4.0

问题描述

当我尝试运行我的应用程序时，我不断收到此错误：

C：/ruby-2.0.0-p195-i386-mingw32/lib/ruby/ gems / 2.0.0 / gems / activesupport-4.0.0.rc1
/lib/active_support/dependencies.rb:228:in`require'：无法加载这样的文件 - 2
.0 / bcrypt_ext （LoadError）

任何人？ - 我尝试使用devise gem进行基本用户身份验证。

解决方案

当我更新到Ruby时，我收到了这个错误Windows上为2.0.0+。我可以通过卸载下载的所有版本的bcrypt 并使用DevKit构建宝石来解决这个问题。

  gem uninstall bcrypt-ruby 
 
 gem install bcrypt-ruby --platform = ruby​​ --no-ri --no-rdoc 
  pre> 
 
 
通常做一个软件包更新将下载一个预编译的gem  mingw32  extension，在这种情况下看起来不起作用。重新安装bcrypt-ruby的这个解决方法有望在将来不再需要。
 
 
 
此外，我在这里保持Ruby on Rails的更新Windows安装说明（主要是为了我自己的参考）用于在Windows上安装Ruby on Rails。 
 
 
 
  
 
 
 
您可能遇到的其他一些Windows陷阱也列在那里：
 
 
 
  
 
I keep getting this error when i try to run my app:

C:/ruby-2.0.0-p195-i386-mingw32/lib/ruby/gems/2.0.0/gems/activesupport-4.0.0.rc1
/lib/active_support/dependencies.rb:228:in `require': cannot load such file -- 2
.0/bcrypt_ext (LoadError)

Any takers? - im trying to use the devise gem for basic user authentication..
 解决方案 
I've gotten this error when I updated to Ruby 2.0.0+ on Windows. I was able to solve it by uninstalling all versions of bcrypt that were downloaded, and building the gem using DevKit.
gem uninstall bcrypt-ruby

gem install bcrypt-ruby --platform=ruby --no-ri --no-rdoc
Usually doing a bundle update will download a precompiled gem mingw32 extension, which in this case appears not to work. This workaround for reinstalling bcrypt-ruby will hopefully not be needed in the future.
Additionally, I keep updated Windows installation instructions for Ruby on Rails here (mostly for my own reference) for installing Ruby on Rails on Windows. 
https://github.com/remomueller/documentation/tree/master/windows
Some other Windows pitfalls you may run into are also listed there:
https://github.com/remomueller/documentation/blob/master/windows/190-miscellaneous.md
                        
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