耙0.9.0'未定义方法'任务''

Question

Gemfile只包含rails 3.0.7和sqlite3,突然rake将无法在任何app上运行.运行'rake db:migrate'时出现错误.完整跟踪输出:

rake aborted!
undefined method `task' for #<NotWorking::Application:0x00000100ccc328>
/Users/codywright/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.0.7/lib/rails/application.rb:215:in `initialize_tasks'
/Users/codywright/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.0.7/lib/rails/application.rb:139:in `load_tasks'
/Users/codywright/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.0.7/lib/rails/application.rb:77:in `method_missing'
/Users/codywright/Code/Rails/not_working/Rakefile:7:in `<top (required)>'
/Users/codywright/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/rake_module.rb:25:in `load'
/Users/codywright/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/rake_module.rb:25:in `load_rakefile'
/Users/codywright/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/application.rb:495:in `raw_load_rakefile'
/Users/codywright/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/application.rb:78:in `block in load_rakefile'
/Users/codywright/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/application.rb:129:in `standard_exception_handling'
/Users/codywright/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/application.rb:77:in `load_rakefile'
/Users/codywright/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/application.rb:61:in `block in run'
/Users/codywright/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/application.rb:129:in `standard_exception_handling'
/Users/codywright/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/lib/rake/application.rb:59:in `run'
/Users/codywright/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.0/bin/rake:31:in `<top (required)>'
/Users/codywright/.rvm/gems/ruby-1.9.2-p180/bin/rake:19:in `load'
/Users/codywright/.rvm/gems/ruby-1.9.2-p180/bin/rake:19:in `<main>'

Answer 1

我做了:sudo gem uninstall rake -v 0.9然后添加gem 'rake', '0.8.7'到我的gem文件中.

Answer 2

您可以通过添加以下行来修复application.rb文件,而不是降级您的Rake:

include Rake::DSL

只需在类Application中添加它,你应该很好!

示例application.rb:

module AppName
  class Application < Rails::Application
   include Rake::DSL
  end
end