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Why can't I get rake db: go to work for ruby.railstutorial.org

I decided to go through the tutorial. After creating a new application and adding a new one user:string email:string, and then running rake db:migratein the application directory, I get this output:

rake aborted! 
undefined method `task' for #<DemoApp::Application:0x00000100e49e08>
/usr/local/rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/railties-3.0.7/lib/rails/application.rb:215:in `initialize_tasks'
/usr/local/rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/railties-3.0.7/lib/rails/application.rb:139:in `load_tasks'
/usr/local/rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/railties-3.0.7/lib/rails/application.rb:77:in `method_missing'
/Users/zigloo99/rails_projects/demo_app/Rakefile:7:in `<top (required)>'
/usr/local/rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/rake_module.rb:25:in `load'
/usr/local/rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/rake_module.rb:25:in `load_rakefile'
/usr/local/rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/application.rb:495:in `raw_load_rakefile'
/usr/local/rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/application.rb:78:in `block in load_rakefile'
/usr/local/rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/application.rb:129:in `standard_exception_handling'
/usr/local/rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/application.rb:77:in `load_rakefile'
/usr/local/rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/application.rb:61:in `block in run'
/usr/local/rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/application.rb:129:in `standard_exception_handling'
/usr/local/rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/application.rb:59:in `run'
/usr/local/rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/bin/rake:31:in `<top (required)>'
/usr/local/rvm/gems/ruby-1.9.2-p180@global/bin/rake:19:in `load'
/usr/local/rvm/gems/ruby-1.9.2-p180@global/bin/rake:19:in `<main>'

I am using RVM too ruby ​​1.9.2 and rails 3.0.7, as in the tutorial. Any thoughts?

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2 answers

Another solution is to require a 0.8.7 rake in your Gemfile before starting a new rails project.

# Gemfile
gem 'rake', '0.8.7', :require => 'rake'

then run bundle install

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This is because the latest version of Rake (0.9.0) is broken down into Rails 3.0 applications, and we are currently expecting a solid fix.

, , load_tasks Rakefile:

<AppName>::Application.send :include, ::Rake::DSL if defined?(::Rake::DSL)
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