我的设置可能有问题:
irb(main):001:0> truncate("Once upon a time in a world far far away", :length => 17)
NoMethodError: undefined method `truncate' for main:Object
from (irb):1
from /usr/lib64/ruby/gems/1.9.1/gems/railties-3.2.8/lib/rails/commands/console.rb:47:in `start'
from /usr/lib64/ruby/gems/1.9.1/gems/railties-3.2.8/lib/rails/commands/console.rb:8:in `start'
from /usr/lib64/ruby/gems/1.9.1/gems/railties-3.2.8/lib/rails/commands.rb:41:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
看起来我不能使用任何文本助手(在irb和rails控制台中)。
我应该检查什么?
答案 0 :(得分:22)
Rails控制台通过helper
变量公开辅助方法。因此,请使用此代码:
helper.truncate("Once upon a time in a world far far away", :length => 17)
了解更多信息,请阅读此article on 37signals.com
答案 1 :(得分:2)
在您的rails控制台中键入以下行
include ActionView::Helpers
现在您的帮助程序在整个rails控制台会话期间都可以访问,您可以继续... ...
truncate("Once upon a time in a world far far away", :length => 17)