rails生成rspec：install - 没有这样的文件加载--sprockets / railtie（LoadError）

Question

I'm a RoR-Beginner and I started learning it with the RoR-Tutorial. Actually I'm at this chapter ( http://ruby.railstutorial.org/chapters/static-pages#top ) and try to install rspec. But everytime when I try to use "rails g rspec:install" I get this error message:

C:\Sites\rails\rails_projects\sample_appp>rails g rspec:install
C:/Sites/rails/rails_projects/sample_appp/config/application.rb:8:in `require':
no such file to load -- sprockets/railtie (LoadError)
        from C:/Sites/rails/rails_projects/sample_appp/config/application.rb:8:i
n `<top (required)>'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.0.9
/lib/rails/commands.rb:15:in `require'
        from C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/railties-3.0.9
/lib/rails/commands.rb:15:in `<top (required)>'
        from script/rails:6:in `require'
        from script/rails:6:in `<main>'

Has anybody an idea to help me? I already tried to comment it out in the application.rb or to explicitly mention it in the gemfile. But I still get this error message.

Would be great if anyone could help me. Btw. my OS is Windows XP and I'm using Ruby version 1.9.2.p290 and Rails version 3.1.0.rc6.

Answer 1

Here's what I did:

the gemfile on the site is apparently slightly wrong, i'm using this:

source 'http://rubygems.org'

gem "rails", "~> 3.1.0"
gem 'sqlite3', '1.3.3'

group :development do
gem 'rspec-rails', '2.6.1'
end

group :test do
gem 'rspec-rails', '2.6.1'
gem 'webrat', '0.7.1'
end

in your terminal type

$ bundle update
$ bundle install

then try again the command

rails generate rspec:install

Good luck! :)

Answer 2

How did you install rspec? Did you do a "gem install" or did you put it in your Gemfile? If it's only in your Gemfile, try putting "bundle exec" in front of your command, like this:

bundle exec rails g rspec:install

I know I have to use bundle exec when I run the specs, so you may need it for the init script too (I can't remember from when I did it, but I have the exact same ruby/rails versions)

Answer 3

Seems like you've created your project with a later version (rails 3.1) of rails gem. Make sure you're using a gemset which only has rails 3.0.9 gems and then do rails new to create your project. This will make sure that the sprockets/railtie line would not occur in your application.rb