捆绑控制台因未初始化的常量 Rails 而失败答案

【问题标题】：bundle console fails w/ uninitialized constant Rails捆绑控制台因未初始化的常量 Rails 而失败
【发布时间】：2014-02-14 06:17:33
【问题描述】：

我使用rails plugin new Foobar --full --mountable 命令创建了一个新的Rails 引擎。运行bundle console 时我得到uninitialized constant Rails 这是为什么？

Resolving dependencies...
Unfortunately, a fatal error has occurred. Please see the Bundler troubleshooting documentation at http://bit.ly/bundler-issues. Thanks!
/Users/kyledecot/Desktop/Foobar/lib/foobar/engine.rb:2:in `<module:Foobar>': uninitialized constant Rails (NameError)
    from /Users/kyledecot/Desktop/Foobar/lib/foobar/engine.rb:1:in `<top (required)>'
    from /Users/kyledecot/Desktop/Foobar/lib/foobar.rb:1:in `require'
    from /Users/kyledecot/Desktop/Foobar/lib/foobar.rb:1:in `<top (required)>'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.5.1/lib/bundler/runtime.rb:76:in `require'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.5.1/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.5.1/lib/bundler/runtime.rb:72:in `each'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.5.1/lib/bundler/runtime.rb:72:in `block in require'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.5.1/lib/bundler/runtime.rb:61:in `each'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.5.1/lib/bundler/runtime.rb:61:in `require'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.5.1/lib/bundler.rb:131:in `require'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.5.1/lib/bundler/cli.rb:664:in `console'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.5.1/lib/bundler/vendor/thor/command.rb:27:in `run'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.5.1/lib/bundler/vendor/thor/invocation.rb:120:in `invoke_command'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.5.1/lib/bundler/vendor/thor.rb:363:in `dispatch'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.5.1/lib/bundler/vendor/thor/base.rb:438:in `start'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.5.1/lib/bundler/cli.rb:10:in `start'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.5.1/bin/bundle:22:in `block in <top (required)>'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.5.1/lib/bundler/friendly_errors.rb:5:in `with_friendly_errors'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.5.1/bin/bundle:22:in `<top (required)>'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/bin/bundle:23:in `load'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@global/bin/bundle:23:in `<main>'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@foobar/bin/ruby_executable_hooks:15:in `eval'
    from /Users/kyledecot/.rvm/gems/ruby-2.0.0-p353@foobar/bin/ruby_executable_hooks:15:in `<main>'

【问题讨论】：

你捆绑安装了吗？
@Derek 是的。运行创建插件/引擎的命令时，会自动完成捆绑安装。
我也收到此错误消息。

标签： ruby-on-rails ruby ruby-on-rails-4

【解决方案1】：

在Foobar/lib/foobar/engine.rb 文件中添加require 'rails' 对我有用。我从here 得到了答案。

【讨论】：