为什么这个扩展方法在Rails中不起作用？

创建文件numeric_helper.rb：

class Numeric 
    def my_function 
     self + 1 
    end 
    end

rails console抛出

/home/baller/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:235:in `load': /home/baller/rails/big_pimpin/config/initializers/numeric_helper.rb:1: syntax error, unexpected keyword_def, expecting '<' or ';' or '\n' (SyntaxError) 
endss Nuend my_fself + 1

为什么这个抛出一个错误？

使用Rails 3.07。

编辑：误差跟踪的其余部分：

from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:235:in 'block in load' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:225:in 'block in load_dependency' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:596:in 'new_constants_in' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:225:in 'load_dependency' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:235:in 'load' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.7/lib/rails/engine.rb:201:in 'block (2 levels) in <class:Engine>' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.7/lib/rails/engine.rb:200:in 'each' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.7/lib/rails/engine.rb:200:in 'block in <class:Engine>' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.7/lib/rails/initializable.rb:25:in 'instance_exec' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.7/lib/rails/initializable.rb:25:in 'run' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.7/lib/rails/initializable.rb:50:in 'block in run_initializers' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.7/lib/rails/initializable.rb:49:in 'each' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.7/lib/rails/initializable.rb:49:in 'run_initializers' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.7/lib/rails/application.rb:134:in 'initialize!' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.7/lib/rails/application.rb:77:in 'method_missing' 
from /home/baller/rails/fann/config/environment.rb:5:in '<top (required)>' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.7/lib/rails/application.rb:103:in 'require' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.7/lib/rails/application.rb:103:in 'require_environment!' 
from /home/baller/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.7/lib/rails/commands.rb:22:in '<top (required)>' 
from script/rails:6:in 'require' 
from script/rails:6:in '<main>'

来源

2012-03-13 B Seven

我不认为你完全复制和粘贴你的代码，因为这个代码适用于我。 – Veraticus 2012-03-13 01:23:53

错误消息也与您的代码不匹配：'endss Nuend my_fself + 1' – 2012-03-13 01:29:09

不，这是代码。必须有别的应用程序正在... – 2012-03-13 01:38:56

好像有一个或多个固定它下面的：

重新启动机器
的Windows行尾上Ubuntu机器（在Windows上编辑，在Ubuntu上运行Rails）。也许这就是错误信息乱码的原因。

来源

2012-03-13 17:31:09

为什么这个扩展方法在Rails中不起作用？

回答

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