设计中的 LoadError（无法加载 bcrypt）

Question

所以我在使用 Devise 创建用户时遇到了问题。这是 "bcrypt".

的问题

Here is the error that's being generated

我在这里查看了一些类似的线程，解决方案是为 Ruby 安装 bcrypt gem。所以我去了 rubygems.org 并在 gem 文件中添加了行，然后运行 bundle install.

但是，之后我尝试运行服务器，但由于某种原因它失败了。服务器不会启动。这是我在 GitBash 中收到的错误：

Zak@ZAKARIA ~/Desktop/Work/raddit (add_users)
$ rails s
c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-5.0.2/lib/active_support/dependen
cies.rb:293:in `require': cannot load such file -- bcrypt_ext (LoadError)
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-5.0.2/lib/active_sup
port/dependencies.rb:293:in `block in require'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-5.0.2/lib/active_sup
port/dependencies.rb:259:in `load_dependency'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-5.0.2/lib/active_sup
port/dependencies.rb:293:in `require'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bcrypt-3.1.11-x86-mingw32/lib/bcry
pt.rb:16:in `rescue in <top (required)>'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bcrypt-3.1.11-x86-mingw32/lib/bcry
pt.rb:12:in `<top (required)>'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.13.7/lib/bundler/runtime
.rb:91:in `require'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.13.7/lib/bundler/runtime
.rb:91:in `block (2 levels) in require'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.13.7/lib/bundler/runtime
.rb:86:in `each'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.13.7/lib/bundler/runtime
.rb:86:in `block in require'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.13.7/lib/bundler/runtime
.rb:75:in `each'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.13.7/lib/bundler/runtime
.rb:75:in `require'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.13.7/lib/bundler.rb:106:
in `require'
        from c:/Users/Zak/Desktop/Work/raddit/config/application.rb:7:in `<top (required)>'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.2/lib/rails/commands/
commands_tasks.rb:88:in `require'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.2/lib/rails/commands/
commands_tasks.rb:88:in `block in server'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.2/lib/rails/commands/
commands_tasks.rb:85:in `tap'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.2/lib/rails/commands/
commands_tasks.rb:85:in `server'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.2/lib/rails/commands/
commands_tasks.rb:49:in `run_command!'
        from c:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.2/lib/rails/commands.
rb:18:in `<top (required)>'
        from bin/rails:4:in `require'
        from bin/rails:4:in `<main>'

注意：在添加 gem 之前，服务器会运行就好了。

这也是我的 gem 文件

gem 'rails', '~> 5.0.2'
gem 'sqlite3'
gem 'puma', '~> 3.0'
gem 'sass-rails', '~> 5.0'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.2'
gem 'devise', '~> 4.2', '>= 4.2.1'
gem 'jquery-rails'
gem 'turbolinks', '~> 5'
gem 'jbuilder', '~> 2.5'
gem 'bcrypt', '~> 3.1', '>= 3.1.11'

group :development, :test do
   gem 'byebug', platform: :mri
end

group :development do
  gem 'web-console', '>= 3.3.0'
end

gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

Answer 1

我认为您不需要在 Gemfile 中显式设置 bcrypt。 Devise 已经将 bcrypt 作为运行时间依赖项包含在内。尝试从您的 Gemfile 中删除 bcrypt gem，运行 bundle update 并重新启动您的服务器。这对我有用。

Answer 2

基于 ajeferson 的回答。

此线程有解决方案：github。com/codahale/bcrypt-ruby/issues/142

Answer 3

我遇到了同样的问题，对我来说，每当我运行捆绑安装时，它都会安装两个版本的 bcrypt：

bcrypt-3.1.11
bcrypt-3.1.11-x86-mingw32

因此，如果我只是执行“gem uninstall bcrypt”并删除 (2)，那么它工作正常。

为了确保它不会被再次安装，我在我的 Gemfile 中指定了平台，如下所示：

gem 'bcrypt', platform: :ruby

设计中的 LoadError（无法加载 bcrypt）

LoadError in Devise (Cannot load bcrypt)

ruby-on-rails

bcrypt

windows-7-x64

devise