Can I define alias in Rails console

Question

I tried to edit my ~/.irbrc file and define show_tbls method to fetch the tables I have, because the command is to long , so I tried to make a function for easier use.

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

def show_tbls
    ActiveRecord::Base.connection.tables
end

When I ran the show_tbls it showed the error as followings

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

Said Kaldybaev · Answer 1 · 2013-07-30T10:48:04.213

5

define your methods inside Kernel Module

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

edited Jul 30 '13 at 10:48

answered Jul 30 '13 at 09:01

Said Kaldybaev

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excuse me , what file should I modify ? – newBike Aug 13 '13 at 08:06
@SaidKaldybaev -- what are the potential implications of modifying `.irbrc`? Are there any? – Tass Aug 07 '14 at 15:36

Can I define alias in Rails console

1 Answers1