在Rails 2.3中运行单元测试时，SettingsLogic无法工作

Question

当运行一些单元测试(使用Ruby/Rails中包含的Test::Unit模块)调用使用某些SettingsLogic特性的方法时，我会收到这个错误：

RuntimeError:将id命名为nil，这将错误地称为4 --如果您真的想要nil的id，请使用object_id

更具体地说，我编写了一些单元测试，以便在我的模型中测试一些方法。这些方法使用SettingsLogic特性，但是这里似乎发生了一些错误。我运行一个测试控制台并检查是否定义了Settings类。但是，我无法访问我的设置值哈希。

script/console test
Loading test environment (Rails 2.3.10)
DEPRECATION WARNING: require "activesupport" is deprecated and will be removed in Rails 3. Use require "active_support" instead. (called from /var/lib/gems/1.8/gems/activesupport-2.3.10/lib/activesupport.rb:2)
>> Settings
=> Settings
>> Settings.blah
RuntimeError: Called id for nil, which would mistakenly be 4 -- if you really wanted the id of nil, use object_id
    from (erb):32
>> exit

而在开发环境中，我得到：

script/console
Loading development environment (Rails 2.3.10)
>> Settings
=> Settings
>> Settings.blah
=> {"gadget_type"=>{"alarm_history_table"=>{"max_printable_rows"=>200, "max_visible_rows"=>14, "_id"=>5, "rows_per_page"=>100}, "text"=>{"_id"=>2}, "current_state_table"=>{"max_printable_rows"=>200, "max_visible_rows"=>14, "_id"=>1, "rows_per_page"=>10}, "column_based_history_table"=>{"max_printable_rows"=>200, "max_visible_rows"=>14, "_id"=>6, "rows_per_page"=>100, "related_states"=>{"unit"=>17, "description"=>49}}, "entity_history_table"=>{"max_printable_rows"=>200, "max_visible_rows"=>14, "_id"=>4, "rows_per_page"=>100}, "chart"=>{"_id"=>3}, "access_type"=>{"url"=>1, "file"=>2}}}
>> exit

我正在手动运行测试，即不是使用rake测试，而是使用ruby unit/my_model_test.rb。

settings.rb模型如下：

class Settings < Settingslogic
  source "#{Rails.root}/config/application.yml"
  namespace Rails.env
end

和application.yml设置文件：

defaults: &defaults
  blah:
    gadget_type:
      access_type:
        url: 1
        file: 2
      current_state_table:
        _id: 1
        max_visible_rows: 14
        rows_per_page: 10
        max_printable_rows: 200
      text:
        _id: 2
      chart:
        _id: 3
      entity_history_table:
        _id: 4
        max_visible_rows: 14
        rows_per_page: 100
        max_printable_rows: 200
      alarm_history_table:
        _id: 5
        max_visible_rows: 14
        rows_per_page: 100
        max_printable_rows: 200
      column_based_history_table:
        _id: 6
        max_visible_rows: 14
        rows_per_page: 100
        max_printable_rows: 200
        related_states:
          description: <%= Property.find_by_name('description').id %>
          unit:  <%= Property.find_by_name('units').id %>

development:
  <<: *defaults

test:
  <<: *defaults

production:
  <<: *defaults

RUBY版本:Ruby1.8.7 (2010-06-23 patchlevel 299) i686Linux

RAILS版本: 2.3.10

设置逻辑: 2.0.6

谢谢！！

Answer 1

固定

问题是yaml中嵌入了红宝石：

Property.find_by_name('description').id

我没有属性固定装置，所以由于这个原因，它失败了。