我尝试编辑〜/ .irbrc文件 并定义show_tbls方法来获取我拥有的表, 因为命令很长,所以我试着让函数更容易使用。
require 'hirb' ; Hirb.enable
require 'irb/completion'
def show_tbls
ActiveRecord::Base.connection.tables
end
当我运行show_tbls时 它显示错误如下
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
答案 0 :(得分:5)
在内核模块中定义你的方法
module Kernel
def show_tbls
ActiveRecord::Base.connection.tables
end
end