2013-07-30 52 views
3

我試圖編輯我的〜/ .irbrc文件 並定義了show_tbls方法來獲取我擁有的表, 因爲命令很長,所以我試圖做一個函數以便於使用。我可以在Rails控制檯中定義別名

require 'hirb' ; Hirb.enable 
require 'irb/completion' 

def show_tbls 
    ActiveRecord::Base.connection.tables 
end 

當我跑了show_tbls 這表明誤差爲以下

1.9.3-p448 :001 > show_tbls() 
NoMethodError: undefined method `show_tbls' for main:Object 
     from (irb):1 
     from /home/poc/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/commands/console.rb:47:in `start' 
     from /home/poc/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/commands/console.rb:8:in `start' 
     from /home/poc/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/commands.rb:41:in `<top (required)>' 
     from script/rails:6:in `require' 
     from script/rails:6:in `<main>' 
1.9.3-p448 :002 > show_tbls 
NameError: undefined local variable or method `show_tbls' for main:Object 

回答

4

定義內核模塊

module Kernel 
    def show_tbls 
    ActiveRecord::Base.connection.tables 
    end 
end 
+0

裏面你的方法對不起,我應該修改哪些文件? – newBike

+0

這個文件〜/ .irbrc –

+0

@SaidKaldybaev - 修改'.irbrc'的潛在含義是什麼?有沒有? – Tass

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