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Rails找不到生成器类

ruby-on-railsrubyrubygems
3

我有一些使用SyncEnumerator的代码。可以在这里看到：这里，SyncEnumerator需要generator.rb。为了包含它，插件的开发者必须要require 'generator'。这在我之前的Rails安装中可以运行，但是自从我升级了OS X并重新安装了Rails之后就无法运行。现在当我尝试安装我的gems时，会得到以下错误信息：

Macintosh:mls TAmoyal$ sudo rake gems:install
(in /Users/TAmoyal/Desktop/RoR_Projects/mls)
rake aborted!
no such file to load -- generator

(See full trace by running task with --trace)

堆栈跟踪：

/usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in `require': no such file to load -- generator (MissingSourceFile)
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in `block in require'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:521:in `new_constants_in'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in `require'
    from /Users/TAmoyal/Desktop/RoR_Projects/mls/vendor/plugins/blackbook/lib/blackbook/importer/page_scraper.rb:4:in `<top (required)>'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in `require'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in `block in require'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:521:in `new_constants_in'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in `require'
    from /Users/TAmoyal/Desktop/RoR_Projects/mls/vendor/plugins/blackbook/lib/blackbook/importer/aol.rb:1:in `<top (required)>'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in `require'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in `block in require'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:521:in `new_constants_in'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in `require'
    from /Users/TAmoyal/Desktop/RoR_Projects/mls/vendor/plugins/blackbook/lib/blackbook.rb:68:in `block in <top (required)>'
    from /Users/TAmoyal/Desktop/RoR_Projects/mls/vendor/plugins/blackbook/lib/blackbook.rb:68:in `each'
    from /Users/TAmoyal/Desktop/RoR_Projects/mls/vendor/plugins/blackbook/lib/blackbook.rb:68:in `<top (required)>'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in `require'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in `block in require'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:521:in `new_constants_in'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in `require'
    from /Users/TAmoyal/Desktop/RoR_Projects/mls/vendor/plugins/blackbook/init.rb:1:in `block in evaluate_init_rb'
    from /usr/local/lib/ruby/gems/1.9.1/gems/rails-2.3.2/lib/rails/plugin.rb:146:in `eval'
    from /usr/local/lib/ruby/gems/1.9.1/gems/rails-2.3.2/lib/rails/plugin.rb:146:in `block in evaluate_init_rb'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings'
    from /usr/local/lib/ruby/gems/1.9.1/gems/rails-2.3.2/lib/rails/plugin.rb:142:in `evaluate_init_rb'
    from /usr/local/lib/ruby/gems/1.9.1/gems/rails-2.3.2/lib/rails/plugin.rb:48:in `load'
    from /usr/local/lib/ruby/gems/1.9.1/gems/rails-2.3.2/lib/rails/plugin/loader.rb:38:in `block in load_plugins'
    from /usr/local/lib/ruby/gems/1.9.1/gems/rails-2.3.2/lib/rails/plugin/loader.rb:37:in `each'
    from /usr/local/lib/ruby/gems/1.9.1/gems/rails-2.3.2/lib/rails/plugin/loader.rb:37:in `load_plugins'
    from /usr/local/lib/ruby/gems/1.9.1/gems/rails-2.3.2/lib/initializer.rb:348:in `load_plugins'
    from /usr/local/lib/ruby/gems/1.9.1/gems/rails-2.3.2/lib/initializer.rb:163:in `process'
    from /usr/local/lib/ruby/gems/1.9.1/gems/rails-2.3.2/lib/initializer.rb:113:in `run'
    from /Users/TAmoyal/Desktop/RoR_Projects/mls/config/environment.rb:13:in `<top (required)>'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in `require'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in `block in require'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:521:in `new_constants_in'
    from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in `require'
    from /usr/local/lib/ruby/gems/1.9.1/gems/rails-2.3.2/lib/commands/server.rb:84:in `<top (required)>'
    from script/server:3:in `require'
    from script/server:3:in `<main>'

有人知道如何解决这个问题吗？

谢谢！

4个回答
3
问题与Rails无关。SyncEnumerator和Generator都是Ruby Core Library的一部分。在Ruby 1.8.x中应该都有。
能否提供完整的异常跟踪信息？ 编辑： 在Ruby 1.9中，Generator库已被Fibers取代。 请参见此处和此处。
您使用的库不兼容Ruby 1.9。您可以尝试从Ruby 1.8.x中复制Generator和SyncEnumerator文件，但我不知道这种解决方案是否可行。
感谢澄清。我使用的是 Ruby 1.9.x 版本。堆栈跟踪已发布。 - Tony
生成器已从Ruby 1.9中删除。有关更多详细信息，请参阅原始响应上的我的编辑。 - Simone Carletti
1

我在使用 Ruby 1.8 时遇到了这个问题，后来发现我的问题是因为我正在引用 'generator'，将其更改为引用 'generator.rb' 后问题得到解决。我认为这是由于 Rails 中存在与其自己的 Generator 类冲突所致。

1

在1.9版本中，有Enumerator::Generator

或者你可以自己创建一个文件'generator'，里面只需要写上 Generator = Enumerator

GL. -r

0

SyncEnumerator已经移动到Ruby 1.9.x中的rexml/syncenumerator，您可以通过执行require 'rexml/syncenumerator'来使用它。

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