`rails s` 在 Windows RailsInstaller 中说“‘require’：无法加载此类文件 -- pty (LoadError)”

Question

我刚刚在我的 Windows 10 PC 上安装了 RailsInstaller。我无法运行 rails s 或 rails g controller StaticPages home help.

我也尝试按照 this 相关 Whosebug 问题的建议安装 zeus gem 来解决这个问题，但没有成功。

宝石文件：

source 'https://rubygems.org'

gem 'rails',        '4.2.2'
gem 'sass-rails',   '5.0.2'
gem 'uglifier',     '2.5.3'
gem 'coffee-rails', '4.1.0'
gem 'jquery-rails', '4.0.3'
gem 'turbolinks',   '2.3.0'
gem 'jbuilder',     '2.2.3'
gem 'sdoc',         '0.4.0', group: :doc
gem 'pry-nav', group: [:development, :test]

group :development, :test do
  gem 'sqlite3',     '>= 1.3.9'
  gem 'byebug',      '3.4.0'
  gem 'web-console', '2.0.0.beta3'
  gem 'spring',      '1.1.3'
end

group :test do
  gem 'minitest-reporters', '1.0.5'
  gem 'mini_backtrace',     '0.1.3'
  gem 'guard-minitest',     '2.3.1'
end

group :production do
  gem 'pg',             '0.17.1'
  gem 'rails_12factor', '0.0.2'
end

错误：

rails s
c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/web-console-2.0.0.beta3/lib/web_console/slave.rb:1:in `require': cannot load such file -- pty (LoadError)
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/web-console-2.0.0.beta3/lib/web_console/slave.rb:1:in `<top (required)>'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/web-console-2.0.0.beta3/lib/web_console.rb:13:in `require'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/web-console-2.0.0.beta3/lib/web_console.rb:13:in `<top (required)>'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/web-console-2.0.0.beta3/lib/web-console.rb:1:in `require'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/web-console-2.0.0.beta3/lib/web-console.rb:1:in `<top (required)>'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.11.2/lib/bundler/runtime.rb:77:in `require'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.11.2/lib/bundler/runtime.rb:77:in `block (2 levels) in require'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.11.2/lib/bundler/runtime.rb:72:in `each'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.11.2/lib/bundler/runtime.rb:72:in `block in require'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.11.2/lib/bundler/runtime.rb:61:in `each'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.11.2/lib/bundler/runtime.rb:61:in `require'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.11.2/lib/bundler.rb:99:in `require'
        from c:/Sites/sample_app/config/application.rb:7:in `<top (required)>'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:78:in `require'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:78:in `block in server'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:75:in `tap'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:75:in `server'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
        from c:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/commands.rb:17:in `<top (required)>'
        from bin/rails:4:in `require'
        from bin/rails:4:in `<main>'

Answer 1

回溯告诉我们 Web 控制台 gem 需要 Ruby 的 pty 库。不幸的是 PTYs (pseudo-terminals) 是一个 Unix/Linux 特性，它在 Windows 上不存在，因此 Ruby 库也不存在。

您可以通过几种方式开始行动：

如果您现在不关心 Web 控制台 gem，只需将其从 Gemfile 中删除即可。
如果您确实需要网络控制台 gem，请尝试用这些 gem 替换网络控制台：
```
gem 'rubysl-pty', platforms: :ruby
gem 'web-console-rails3', platforms: :ruby
```
来源：a web-console Github issue.

Answer 2

我按照以下步骤解决了这个问题：

首先检查你的Gemfile.lock，如果你在那边提到了bcrypt版本那么你不需要在Gemfile中提到bcrypt版本。
如果 Gemfile.lock 中缺少 bcrypt 版本，则执行以下步骤： a) gem 安装 bcrypt b) 打开你的 Gemfile 并粘贴 "gem 'bcrypt', '~> 3.1.7'" c) 运行控制台命令：bundle install

希望按照上述步骤可以解决您的问题。

`rails s` 在 Windows RailsInstaller 中说“‘require’：无法加载此类文件 -- pty (LoadError)”

`rails s` says "`require': cannot load such file -- pty (LoadError)" in Windows RailsInstaller

ruby

ruby-on-rails

railsinstaller

railsinstaller-windows