Hirb doesn't work at all in rails console

问题

I followed the tutorial on hirb rdoc but unfortunately, my rails console is not working at all.

I've already done sudo gem install hirb

and added hirb to my Gemfile:

gem 'hirb', '~>0.7.0'

Then I launched bundle install

And I get this result :

rails c
Loading development environment (Rails 3.2.11)
> require 'hirb'
=> false
> Hirb.enable
=> true
> Municipality.all
Municipality Load (0.8ms)  SELECT "municipalities".* FROM "municipalities" ORDER BY name asc
=> [#<Municipality id: 1, district_id: 6, name: "Ambalamanasy II", created_at: "2013-01-16 12:11:45", updated_at: "2013-01-16 12:11:45">,
...
# doesn't work

Could anyone help?

回答1:

If your using pry as your rails console... add this in your .pryrc file

require 'hirb'

Hirb.enable

old_print = Pry.config.print
Pry.config.print = proc do |output, value|
  Hirb::View.view_or_page_output(value) || old_print.call(output, value)
end

回答2:

Yoshdog's answer is outdated - it returns an error:

output error: # NoMethodError: undefined method `pager' for nil:NilClass

You can fix this by using the updated code from the docs:

begin
  require 'hirb'
rescue LoadError
  # Missing goodies, bummer
end

if defined? Hirb
  # Slightly dirty hack to fully support in-session Hirb.disable/enable toggling
  Hirb::View.instance_eval do
    def enable_output_method
      @output_method = true
      @old_print = Pry.config.print
      Pry.config.print = proc do |*args|
        Hirb::View.view_or_page_output(args[1]) || @old_print.call(*args)
      end
    end

    def disable_output_method
      Pry.config.print = @old_print
      @output_method = nil
    end
  end

  Hirb.enable
end

This will also allow you to enable/disable Hirb, which may come in handy.

回答3:

If you using pry it's works for me

$ pwd
/Users/me/path/rails-app
$ ls -la
-rw-r--r--   1 ryosuke  staff       554 12 26 17:50 .pryrc

and

begin
  require 'hirb'
rescue LoadError
  # Missing goodies, bummer
end

if defined? Hirb
  # Slightly dirty hack to fully support in-session Hirb.disable/enable toggling
  Hirb::View.instance_eval do
    def enable_output_method
      @output_method = true
      @old_print = Pry.config.print
      Pry.config.print = proc do |*args|
        Hirb::View.view_or_page_output(args[1]) || @old_print.call(*args)
      end
    end

    def disable_output_method
      Pry.config.print = @old_print
      @output_method = nil
    end
  end

  Hirb.enable
end

来源：https://stackoverflow.com/questions/14473802/hirb-doesnt-work-at-all-in-rails-console