Я пытаюсь настроить breadcrumbs_on_rails с приложением rails 3
Я добавил
gem 'breadcrumbs_on_rails'
в мой гемфайл
также, я поместил, включает BreadcrumbsOnRails :: ControllerMixin
require File.expand_path('../boot', __FILE__)
require 'rails/all'
include BreadcrumbsOnRails::ControllerMixin
if defined?(Bundler)
....
в application.rb
Но все равно я постоянно получаю ошибку:
runnerw.exe C:\Ruby\bin\ruby.exe -e $stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) /script/rails server -b 127.0.0.1 -p 3000 -e development
/config/application.rb:1:in `<top (required)>': uninitialized constant BreadcrumbsOnRails (NameError)
from C:/Ruby/lib/ruby/gems/1.9.1/gems/railties-3.2.1/lib/rails/commands.rb:53:in `require'
from C:/Ruby/lib/ruby/gems/1.9.1/gems/railties-3.2.1/lib/rails/commands.rb:53:in `block in <top (required)>'
from C:/Ruby/lib/ruby/gems/1.9.1/gems/railties-3.2.1/lib/rails/commands.rb:50:in `tap'
from C:/Ruby/lib/ruby/gems/1.9.1/gems/railties-3.2.1/lib/rails/commands.rb:50:in `<top (required)>'
from /script/rails:6:in `require'
from /script/rails:6:in `<top (required)>'
Как решить эту ошибку? Спасибо