0

我遇到了“未初始化常量 Rake::DSL”的问题。我曾尝试在 Gemfile 中添加 gem 'rake','0.8.7'，但没有成功。有没有其他方法可以解决这个问题？谢谢！

n177-p118:testapp shuang$ rake db:migrate --trace
(in /Users/shuang/rails/testapp)
rake aborted!
uninitialized constant Rake::DSL
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rake.rb:2503:in `const_missing'
/Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/tasks/documentation.rake:11
/Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/tasks.rb:15:in `load'
/Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/tasks.rb:15
/Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/tasks.rb:6:in `each'
/Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/tasks.rb:6
/Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/application.rb:289:in `require'
/Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/application.rb:289:in `initialize_tasks'
/Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/railtie.rb:184:in `instance_exec'
/Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/railtie.rb:184:in `load_tasks'
/Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/railtie.rb:184:in `each'
/Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/railtie.rb:184:in `load_tasks'
/Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/engine.rb:424:in `load_tasks'
/Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/application.rb:145:in `load_tasks'
/Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/railtie/configurable.rb:30:in `send'
/Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/railtie/configurable.rb:30:in `method_missing'
/Users/shuang/rails/testapp/rakefile:8
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rake.rb:2383:in `load'
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rake.rb:2383:in `raw_load_rakefile'
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rake.rb:2017:in `load_rakefile'
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rake.rb:2068:in `standard_exception_handling'
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rake.rb:2016:in `load_rakefile'
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rake.rb:2000:in `run'
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rake.rb:2068:in `standard_exception_handling'
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rake.rb:1998:in `run'
/usr/bin/rake:31
4

3 回答 3

1

这可能是非常糟糕的形式，但是将其添加到我的 Rakefile 的顶部对我有用：

module Rake
  module DSL
  end
end
于 2012-05-18T17:25:30.810 回答
0

检查您的 gemfile.lock，它的 rake 版本必须 > 0.8.7。如果是，则全部删除，然后删除版本的所有实例或删除 gemfile.lock 的所有内容，然后再次进行捆绑安装。

于 2012-05-11T08:32:29.417 回答
-1

您也可以尝试运行

bundle exec rake db:migrate
于 2012-05-11T08:39:40.580 回答