Rails的耙给冲突消息（导轨3.1）

Question

简称路径：

me@michael-laptop:~/Dropbox_not_syncd/webs/3/tdd/rubyists$ rake db:create 
.../rake/version.rb:4: warning: already initialized constant MAJOR 
.../rake/version.rb:5: warning: already initialized constant MINOR 
.../rake/version.rb:6: warning: already initialized constant BUILD 
.../rake/version.rb:3: warning: already initialized constant NUMBERS 
.../rake/version.rb:9: warning: already initialized constant VERSION 
.../rake.rb:26: warning: already initialized constant RAKEVERSION 
.../rake/early_time.rb:17: warning: already initialized constant EARLY 
.../rake/alt_system.rb:32: warning: already initialized constant WINDOWS 
.../rake/application.rb:28: warning: already initialized constant DEFAULT_RAKEFILES 
WARNING: Possible conflict with Rake extension: String#ext already exists 
WARNING: Possible conflict with Rake extension: String#pathmap already exists 
.../rake/task_arguments.rb:73: warning: already initialized constant EMPTY_TASK_ARGS 
.../rake/invocation_chain.rb:49: warning: already initialized constant EMPTY 
.../rake/file_utils.rb:10: warning: already initialized constant RUBY 
.../rake/file_utils.rb:84: warning: already initialized constant LN_SUPPORTED 
.../rake/dsl_definition.rb:143: warning: already initialized constant Commands 
.../rake/file_list.rb:44: warning: already initialized constant ARRAY_METHODS 
.../rake/file_list.rb:47: warning: already initialized constant MUST_DEFINE 
.../rake/file_list.rb:51: warning: already initialized constant MUST_NOT_DEFINE 
.../rake/file_list.rb:55: warning: already initialized constant SPECIAL_RETURN 
.../rake/file_list.rb:61: warning: already initialized constant DELEGATING_METHODS 
.../rake/file_list.rb:364: warning: already initialized constant DEFAULT_IGNORE_PATTERNS 
.../rake/file_list.rb:370: warning: already initialized constant DEFAULT_IGNORE_PROCS 
.../rake.rb:64: warning: already initialized constant FileList 
.../rake.rb:65: warning: already initialized constant RakeFileUtils 
rake aborted! 
stack level too deep 

(See full trace by running task with --trace) 

完整路径：

@michael-laptop:~/Dropbox_not_syncd/webs/3/tdd/rubyists$ rake db:create 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/version.rb:4: warning: already initialized constant MAJOR 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/version.rb:5: warning: already initialized constant MINOR 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/version.rb:6: warning: already initialized constant BUILD 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/version.rb:3: warning: already initialized constant NUMBERS 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/version.rb:9: warning: already initialized constant VERSION 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake.rb:26: warning: already initialized constant RAKEVERSION 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/early_time.rb:17: warning: already initialized constant EARLY 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/alt_system.rb:32: warning: already initialized constant WINDOWS 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/application.rb:28: warning: already initialized constant DEFAULT_RAKEFILES 
WARNING: Possible conflict with Rake extension: String#ext already exists 
WARNING: Possible conflict with Rake extension: String#pathmap already exists 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/task_arguments.rb:73: warning: already initialized constant EMPTY_TASK_ARGS 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/invocation_chain.rb:49: warning: already initialized constant EMPTY 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/file_utils.rb:10: warning: already initialized constant RUBY 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/file_utils.rb:84: warning: already initialized constant LN_SUPPORTED 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/dsl_definition.rb:143: warning: already initialized constant Commands 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/file_list.rb:44: warning: already initialized constant ARRAY_METHODS 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/file_list.rb:47: warning: already initialized constant MUST_DEFINE 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/file_list.rb:51: warning: already initialized constant MUST_NOT_DEFINE 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/file_list.rb:55: warning: already initialized constant SPECIAL_RETURN 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/file_list.rb:61: warning: already initialized constant DELEGATING_METHODS 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/file_list.rb:364: warning: already initialized constant DEFAULT_IGNORE_PATTERNS 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake/file_list.rb:370: warning: already initialized constant DEFAULT_IGNORE_PROCS 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake.rb:64: warning: already initialized constant FileList 
/home/me/.rvm/gems/ruby-1.9.2-p180@global/gems/rake-0.9.2/lib/rake.rb:65: warning: already initialized constant RakeFileUtils 
rake aborted! 
stack level too deep 

(See full trace by running task with --trace) 

Answer 1

bundle exec rake db:migrate应该可以解决这个错误。我刚才遇到了同样的事情，这为我解决了这个问题。

Answer 2

作为一个附注，RVM不再将rake安装到全局gemset中，以便与每个gemset一起用于特定的ruby。这是密切相关的，因为我们这样做是为了您可以直接通过Gemfile和/或gemset安装耙式PER-PROJECT。

我们高度鼓励每个项目的.rvmrc文件，以便将每个项目的宝石隔离为其特定的宝石集分配。这使A）被污染的“默认”和/或“全球”，或B）污染其他宝石。

对于每个安装的Ruby，应该在'全局'gemset中的唯一宝石应该是捆绑器。

rvm x.x.x@global exec rvm gemset empty && rvm x.x.x@global exec gem install bundler && rvm --create use x.x.x@mygemset && gem list -l 

会证明这是非常有效的。另外，通过这样做可以有效地消除对

bundle exec ... 

的需要。