ruby-on-rails - 使用 rake 0.9.0 AND 0.8.3 的未定义方法 'task'

Question

在尝试运行 rake 时，遇到以下错误:

heroku rake db:migrate
rake aborted!

...和跟踪:

> undefined method `task' for #
> /app/.bundle/gems/ruby/1.8/gems/railties-3.0.7/lib/rails/application.rb:215:in `initialize_tasks'
> /app/.bundle/gems/ruby/1.8/gems/railties-3.0.7/lib/rails/application.rb:139:in `load_tasks'
> /app/.bundle/gems/ruby/1.8/gems/railties-3.0.7/lib/rails/application.rb:77:in `send'
> /app/.bundle/gems/ruby/1.8/gems/railties-3.0.7/lib/rails/application.rb:77:in `method_missing'
> /app/Rakefile:7
> /app/.bundle/gems/ruby/1.8/gems/rake-0.9.0/lib/rake/rake_module.rb:25:in `load'
> /app/.bundle/gems/ruby/1.8/gems/rake-0.9.0/lib/rake/rake_module.rb:25:in `load_rakefile'
> /app/.bundle/gems/ruby/1.8/gems/rake-0.9.0/lib/rake/application.rb:495:in `raw_load_rakefile'
> /app/.bundle/gems/ruby/1.8/gems/rake-0.9.0/lib/rake/application.rb:78:in `load_rakefile'
> /app/.bundle/gems/ruby/1.8/gems/rake-0.9.0/lib/rake/application.rb:129:in `standard_exception_handling'
> /app/.bundle/gems/ruby/1.8/gems/rake-0.9.0/lib/rake/application.rb:77:in `load_rakefile'
> /app/.bundle/gems/ruby/1.8/gems/rake-0.9.0/lib/rake/application.rb:61:in `run'
> /app/.bundle/gems/ruby/1.8/gems/rake-0.9.0/lib/rake/application.rb:129:in `standard_exception_handling'
> /app/.bundle/gems/ruby/1.8/gems/rake-0.9.0/lib/rake/application.rb:59:in `run'
> /app/.bundle/gems/ruby/1.8/gems/rake-0.9.0/bin/rake:31
> /usr/ruby1.8.7/bin/rake:19:in `load'
> /usr/ruby1.8.7/bin/rake:19

gem 文件:

source 'http://rubygems.org'

gem 'rails', '3.0.7'
gem 'rake', '~> 0.8.7'
gem 'sqlite3-ruby', :require => 'sqlite3'

我意识到其他人已经报告了此错误并提出了同样的问题 - 不过，发布的解决方案对我的问题没有影响。我已经尝试了此处列出的每个解决方案:Undefined method 'task' using Rake 0.9.0 。

Answer 1

Rails 3.0.8.rc1 已使用 rake 0.9.0 修复了此问题，请参阅此提交:https://github.com/rails/rails/commit/83f257fc4862642af29056cb5b7dfef6e1303754