我正在使用这个指南getting_started学习Ruby on Rails,我创建了我的项目和数据库,但是当我运行rake db:migrate时出现以下错误:
谢谢。@mona-Extensa-5230:~/rubyDev/Sites/blog# rake db:migrate
(in /home/mona/rubyDev/Sites/blog)
== CreatePosts: migrating ==================================================== -- create_table(:posts)
rake aborted!
An error has occurred, this and all later migrations canceled:
private method `String' called for#
ActiveRecord::ConnectionAdapters::TableDefinition:0xb7540f30>