在Mac上启动Rails服务器时出现故障

我想使用Rails 4.2.3，并且我设法使用rbenv和gem来安装它。当启动服务器我得到这个错误：在Mac上启动Rails服务器时出现故障

rails server 
=> Booting WEBrick 
=> Rails 4.2.3 application starting in development on http://localhost:3000 
=> Run `rails server -h` for more startup options 
=> Ctrl-C to shutdown server 
/Users/macuser/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-4.2.3/lib/active_support/core_ext/numeric/conversions.rb:121: warning: constant ::Fixnum is deprecated 
/Users/macuser/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-4.2.3/lib/active_support/core_ext/numeric/conversions.rb:121: warning: constant ::Bignum is deprecated 
Exiting 
/Users/macuser/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-4.2.3/lib/active_support/core_ext/numeric/conversions.rb:124:in `block (2 levels) in <class:Numeric>': stack level too deep (SystemStackError) 
    from /Users/macuser/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-4.2.3/lib/active_support/core_ext/numeric/conversions.rb:131:in `block (2 levels) in <class:Numeric>' 
    from /Users/macuser/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-4.2.3/lib/active_support/core_ext/numeric/conversions.rb:131:in `block (2 levels) in <class:Numeric>' 
    from /Users/macuser/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-4.2.3/lib/active_support/core_ext/numeric/conversions.rb:131:in `block (2 levels) in <class:Numeric>' 
    from /Users/macuser/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-4.2.3/lib/active_support/core_ext/numeric/conversions.rb:131:in `block (2 levels) in <class:Numeric>' 
    from /Users/macuser/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-4.2.3/lib/active_support/core_ext/numeric/conversions.rb:131:in `block (2 levels) in <class:Numeric>' 
    from /Users/macuser/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-4.2.3/lib/active_support/core_ext/numeric/conversions.rb:131:in `block (2 levels) in <class:Numeric>' 
    from /Users/macuser/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-4.2.3/lib/active_support/core_ext/numeric/conversions.rb:131:in `block (2 levels) in <class:Numeric>' 
    from /Users/macuser/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-4.2.3/lib/active_support/core_ext/numeric/conversions.rb:131:in `block (2 levels) in <class:Numeric>' 
    ... 5542 levels... 
    from /Users/macuser/.rbenv/versions/2.4.0/lib/ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in `require' 
    from /Users/macuser/dreamer_me/bin/spring:15:in `<top (required)>' 
    from bin/rails:3:in `load' 
    from bin/rails:3:in `<main>'

来源

2017-04-10 khatman

感谢您的帮助@Swards。 rbenv版本系统 * 2.4.0（由/Users/macuser/.rbenv/version设置）我在哪里可以找到.ruby版本？按照应用程序级别，你的意思是在运行“rails new”时创建的目录。 – khatman

是的，将.ruby-version（这是文件名和。）放在与/ app相同的级别。然后你可以通过rbenv安装来添加ruby - 例如'rbenv install 2.2.2' – Swards

你正在运行的Ruby 2.4，你可以通过在应用水平.ruby-version文件中设置它改变你的Ruby版本。

# .ruby-version 
2.2.2

或者任何你喜欢的东西。你可以看看你有什么可用的红宝石版本

$ rbenv versions

来源

2017-04-10 21:35:04 Swards

这里的问题在于，我将Ruby的最新版本与早期版本的Rails混合在一起，两者并不相配。看起来Rails已经要求* Fixnum *和* Bignum *，从版本2.4开始已经弃用了。我认为任何早于2.4的版本在这两个版本被弃用之前都可以使用。我卸载了Ruby 2.4.0并安装了Ruby 2.2.2，它工作。 **大喊@Swards帮我出去**。 – khatman

在Mac上启动Rails服务器时出现故障

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