当我想创建Ruby on Rails项目时,我会收到以下消息.
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:55: uninitialized constant ActiveSupport::Dependencies::Mutex (NameError)
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
from /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.8/lib/active_support.rb:57
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
from /usr/lib/ruby/gems/1.8/gems/rails-2.3.8/lib/rails_generator.rb:31
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
from /usr/lib/ruby/gems/1.8/gems/rails-2.3.8/bin/rails:15
from /usr/bin/rails:19:in `load'
from /usr/bin/rails:19
出了什么问题？我该如何解决？
我有一个旧版本的Rails项目,它是在config/environment文件中使用BrowserCMS构建的
RAILS_GEM_VERSION = '2.3.4' unless defined? RAILS_GEM_VERSION
所以我使用rvm安装了这个宝石,所以我可以运行它
$ gem list
*** LOCAL GEMS ***
actionmailer (2.3.8, 2.3.4)
actionpack (2.3.8, 2.3.4)
activerecord (2.3.8, 2.3.4)
activeresource (2.3.8, 2.3.4)
activesupport (2.3.8, 2.3.4)
bundler (1.1.4)
mysql (2.8.1)
rack (1.1.3, 1.0.1)
rails (2.3.4)
rake (0.8.7)
我运行 rake db:create它工作正常,但是当我运行时rake db:migrate我得到了这个错误
rake aborted!
undefined method `name' for "actionmailer":String
我尝试过使用Trace,但我没有得到任何帮助
$ rake db:migrate --trace
(in /home/azzurrio/Desktop/berkmancenter-fair_use_tool-f8f65ea)
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
rake aborted!
undefined method `name' for "actionmailer":String …