NoMethodError：未定义的方法新为零：NilClass

Question

我试图在rails控制台中输入list = list.new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 `’ 

任何想法为什么？ 非常感谢！

Answer 1

在Rails中，模型名称是按照惯例大写的。试试这个：

list = List.new 

Answer 2

你应该试试这个

@list = List.new