NoMethodError：nil：NilClass新增的未定义方法

问题描述

|| 尝试在Rails控制台中输入ѭ0时遇到问题。我收到以下错误消息：

NoMethodError: undefined method `new’ for nil:NilClass
from /Users/csamanian/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.0.8/lib/active_support/whiny_nil.rb:48:in `method_missing’
from (irb):1
from /Users/csamanian/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.0.8/lib/rails/commands/console.rb:44:in `start’
from /Users/csamanian/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.0.8/lib/rails/commands/console.rb:8:in `start’
from /Users/csamanian/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.0.8/lib/rails/commands.rb:23:in `’
from script/rails:6:in `require’
from script/rails:6:in `’

有什么想法吗？ 非常感谢！     

解决方法

        型号名称在Rails中按惯例大写。尝试以下方法：

list = List.new

    ,        你应该试试这个

@list = List.new