1

我正在尝试将祖先添加到我拥有的 Event_Tags 模型中。现在那个模型只有一个名字。我在 gemfile 中添加了“祖先”并捆绑在一起。现在当我去运行以下命令时：

rails g migration AddAncestryToEventTags ancestry:string

我收到以下错误：

/Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/ancestry- 2.0.0/lib/ancestry/has_ancestry.rb:7:in `block in has_ancestry': Unknown option for has_ancestry: :hierarchy_class_name => "TagHierarchy". (Ancestry::AncestryException)

不知道为什么会出现这种情况。我一直在关注 Ancestry railscast 剧集以及文档。

这也是我在尝试运行 rails 控制台时遇到的相同错误。

这是整个消息：

/Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/ancestry-2.0.0/lib/ancestry/has_ancestry.rb:7:in `block in has_ancestry': Unknown option for has_ancestry: :hierarchy_class_name => "TagHierarchy". (Ancestry::AncestryException)
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/ancestry-2.0.0/lib/ancestry/has_ancestry.rb:5:in `each'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/ancestry-2.0.0/lib/ancestry/has_ancestry.rb:5:in `has_ancestry'
    from /Users/stevenbrooks1111/Code/freelance/GRN-Auth/config/initializers/tag_patch.rb:3:in `<class:Tag>'
    from /Users/stevenbrooks1111/Code/freelance/GRN-Auth/config/initializers/tag_patch.rb:2:in `<module:ActsAsTaggableOn>'
    from /Users/stevenbrooks1111/Code/freelance/GRN-Auth/config/initializers/tag_patch.rb:1:in `<top (required)>'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:245:in `load'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:245:in `block in load'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:236:in `load_dependency'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:245:in `load'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.11/lib/rails/engine.rb:588:in `block (2 levels) in <class:Engine>'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.11/lib/rails/engine.rb:587:in `each'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.11/lib/rails/engine.rb:587:in `block in <class:Engine>'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.11/lib/rails/initializable.rb:30:in `instance_exec'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.11/lib/rails/initializable.rb:30:in `run'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.11/lib/rails/initializable.rb:55:in `block in run_initializers'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.11/lib/rails/initializable.rb:54:in `each'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.11/lib/rails/initializable.rb:54:in `run_initializers'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.11/lib/rails/application.rb:136:in `initialize!'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.11/lib/rails/railtie/configurable.rb:30:in `method_missing'
    from /Users/stevenbrooks1111/Code/freelance/GRN-Auth/config/environment.rb:14:in `<top (required)>'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `block in require'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:236:in `load_dependency'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.11/lib/rails/application.rb:103:in `require_environment!'
    from /Users/stevenbrooks1111/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.11/lib/rails/commands.rb:40:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'
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1 回答 1

0

一个可能的原因，在我的例子中是正确的，有两个不同的引擎使用祖先和acts_as_tree。Engine1，需要 gemspec 中的祖先。Engine2，需要 gemspec 中的acts_as_tree。

如果在 gemfile 中 engine1 位于 engine2 之上，则首先加载祖先 gem。在这种情况下，此代码将执行并覆盖acts_as_tree 函数。解决此问题的一种方法是在 gemfile 中将 Engine2 放在 Engine1 上。

我还没有找到更好的方法来解决这个问题，如果你知道的话，请告诉我。

于 2014-06-20T05:31:18.217 回答