rake db：迁移错误，'task'未定义方法
已尝试运行rake db：migrate，返回错误。rake db：迁移错误，'task'未定义方法
然后用--trace再次跑了，这里是错误：
Paul-Denlingers-MacBook-Pro:things_i_bought pdenlinger$ rake db:migrate --trace
耙中止！ 未定义的方法task' for #<ThingsIBought::Application:0x00000101679880> /Users/pdenlinger/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.7/lib/rails/application.rb:215:in initialize_tasks' /Users/pdenlinger/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.7/lib/rails/application.rb:139:in load_tasks' /Users/pdenlinger/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.7/lib/rails/application.rb:77:in method_missing的” /用户/ pdenlinger/rails_projects/things_i_bought/Rakefile：7：在<top (required)>' /Users/pdenlinger/.rvm/gems/ruby-1.9.2-p0/gems/rake-0.9.0/lib/rake/rake_module.rb:25:in加载' /Users/pdenlinger/.rvm/gems/ruby-1.9.2-p0/gems/rake-0.9.0/lib/rake/rake_module.rb： 25：在load_rakefile' /Users/pdenlinger/.rvm/gems/ruby-1.9.2-p0/gems/rake-0.9.0/lib/rake/application.rb:495:in raw_load_rakefile' /Users/pdenlinger/.rvm/gems/ruby-1.9.2-p0/gems/rake-0.9.0/lib/rake/application.rb:78:in block in load_rakefile' /Users/pdenlinger/.rvm/gems/ruby-1.9.2-p0/gems/rake-0.9.0/lib/rake/application.rb:129:in standard_exception_handling' /Users /pdenlinger/.rvm/gems/ruby-1.9.2-p0/gems/rake-0.9.0/lib/rake/application.rb:77:in load_rakefile' /Users/pdenlinger/.rvm/gems/ruby-1.9.2-p0/gems/rake-0.9.0/lib/rake/application.rb:61:in block in run' /Users/pdenlinger/.rvm/gems /ruby-1.9.2-p0/gems/rake-0.9.0/lib/rake/ application.rb：129：在standard_exception_handling' /Users/pdenlinger/.rvm/gems/ruby-1.9.2-p0/gems/rake-0.9.0/lib/rake/application.rb:59:in运行' /Users/pdenlinger/.rvm/gems/ruby-1.9.2-p0/gems/rake-0.9.0/bin/rake:31:in <top (required)>' /Users/pdenlinger/.rvm/gems/ruby-1.9.2-p0/bin/rake:19:in加载' /Users /pdenlinger/.rvm/gems/ruby-1.9.2-p0/bin/rake:19:in`'
它说'任务'是一个未定义的方法;这是什么意思？我能做些什么来解决它？
Running Rails 3.0.7
Rake 0.9.0打破了一些东西。
在此期间，请尝试：
bundle exec rake db:migrate
可能的重复[为什么我不能获取rake db：迁移到ruby.railstutorial.org工作]（http://*.com/questions/6091617/why-cant-i-get -rake-dbmigrate-to-work-for-ruby-railstutorial-org） – 2011-05-29 04:27:11
谢谢。我在SO上的时间一直是零星的，我并不熟悉所有的规则，但会尝试去理解它们。 – pdenlinger 2011-05-29 05:04:18