我正在关注 Rails 和 Neo4j 教程http://blog.jayway.com/2011/03/02/neo4j-rb-1-0-0-and-rails-3/并收到以下错误:
me$ rails generate scaffold post title:string body:string
LoadError: no such file to load -- active_support/core_ext/class/inheritable_attributes
require at org/jruby/RubyKernel.java:1038
(root) at /Users/me/.rvm/gems/jruby-1.6.5/gems/neo4j-1.3.1-java/lib/neo4j.rb:9
require at org/jruby/RubyKernel.java:1038
(root) at /Users/me/.rvm/gems/jruby-1.6.5/gems/neo4j-1.3.1-java/lib/neo4j.rb:8
require at org/jruby/RubyKernel.java:1038
(root) at /Users/me/Projects/myblog/config/application.rb:24
require at org/jruby/RubyKernel.java:1038
(root) at script/rails:6
我究竟做错了什么?