Ruby on rails 未加载轨道中的Gem

我想用宝石来象征(http://rubygems.org/gems/symbolize)我的Rails项目。我补充说

gem 'symbolize', '4.2.0'

到我的Gemfile并运行

捆绑安装

。如果我运行

gem list--local

我会看到已安装的gem

然而，当我实际尝试使用gem添加到ActiveRecord的方法时，我在运行时遇到了一个错误。即，我有：

class WrittenEntry < ActiveRecord::Base
  symbolize :entry_type, :in => [:blog, :vorfreude, :twitter], :i18n => false
end

class writenentry[：blog，：vorfloude，：twitter]，：i18n=>false
结束

它抛出：

/Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/dynamic_matchers.rb:50:in `method_missing': undefined method `symbolize' for #<Class:0x007ff7ee8ad570> (NoMethodError)
    from /Users/haldimann/Projects/nikhaldimann.com/app/models/written_entry.rb:4:in `<class:WrittenEntry>'
    from /Users/haldimann/Projects/nikhaldimann.com/app/models/written_entry.rb:1:in `<top (required)>'
    from /Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:251:in `require'
    from /Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:251:in `block in require'
    from /Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:236:in `load_dependency'
    from /Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:251:in `require'
    from /Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:359:in `require_or_load'
    from /Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:313:in `depend_on'
    from /Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:225:in `require_dependency'
    from /Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/railties-3.2.9/lib/rails/engine.rb:439:in `block (2 levels) in eager_load!'
    ...

/Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_-record/dynamic_-matchers.rb:50:in'method_-missing'：未定义的#（nomethododerror）方法“symbol”
from/Users/haldimann/Projects/nikhaldiman.com/app/models/writed_entry.rb:4:in`'
from/Users/haldimann/Projects/nikhaldiman.com/app/models/writed_entry.rb:1:in`'
from/Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.9/lib/active\u support/dependencies.rb:251:in'require'
from/Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.9/lib/active\u support/dependencies.rb:251:in'block in require'
from/Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.9/lib/active\u support/dependencies.rb:236:in'load\u dependenciency'
from/Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.9/lib/active\u support/dependencies.rb:251:in'require'
来自/Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.9/lib/active\u support/dependencies.rb:359:in“require\u或\u load”
来自/Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.9/lib/active\u support/dependencies.rb:313:in'dependent\u'
from/Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.9/lib/active\u support/dependencies.rb:225:in“require\u dependencity”
from/Users/haldimann/.rvm/gems/ruby-1.9.3-p327/gems/railties-3.2.9/lib/rails/engine.rb:439:in`block（2层）in eager_load！'
...

---

看来，象征宝石不知何故从未实际加载。我可能遗漏了一些明显的问题，有什么想法吗？

在github为同一个问题添加了问题：根据github的问题，这个问题似乎在最新版本的Symbol中得到了修复。你能更新到4.3.0+版本，看看是否能解决这个问题吗？