Rails 数据库表无法生成
IDE 是 netbeans7.2.1 创建项目后 localhost:3000 页面显示如下： About your application’s environment Ruby version 1.8.7 (i386-mingw32) RubyGems version 1.8.24 Rails version 2.0.2 Active Record version 2.0.2 Action Pack version 2.0.2 Active Resource version 2.0.2 Action Mailer version 2.0.2 Active Support version 2.0.2 Application root E:/netbeansWorkSpace/RailsApplication2 Environment development Database adapter mysql 在 netbeans 创建的项目上右键 migrate database-》to current version 出现 "db:migrate" does not task 错误，不能生成数据库表。请问我应该怎么解决？ 其中生成的 model 类为 class Post < ActiveRecord::Base end migrate 下的 class CreatePosts < ActiveRecord::Migration def self.up create_table :posts do |t| t.column "title",:string t.timestamps end end
def self.down drop_table :posts end end
控制台执行 rake db:migrate 后出现这样的错误
rake aborted!
Unrecognized --trace option 'race'
C:/Ruby187/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:508:in se
lect_trace_output'
C:/Ruby187/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:466:inst
andard_rake_options'
C:/Ruby187/lib/ruby/1.8/optparse.rb:1298:in call'
C:/Ruby187/lib/ruby/1.8/optparse.rb:1298:inparse_in_order'
C:/Ruby187/lib/ruby/1.8/optparse.rb:1254:in catch'
C:/Ruby187/lib/ruby/1.8/optparse.rb:1254:inparse_in_order'
C:/Ruby187/lib/ruby/1.8/optparse.rb:1248:in order!'
C:/Ruby187/lib/ruby/1.8/optparse.rb:1339:inpermute!'
C:/Ruby187/lib/ruby/1.8/optparse.rb:1360:in parse!'
C:/Ruby187/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:518:inha
ndle_options'
C:/Ruby187/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:81:in ini
t'
C:/Ruby187/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:160:inst
andard_exception_handling'
C:/Ruby187/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:79:in ini
t'
C:/Ruby187/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:71:inrun
'
C:/Ruby187/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:160:in st
andard_exception_handling'
C:/Ruby187/lib/ruby/gems/1.8/gems/rake-10.0.3/lib/rake/application.rb:70:inrun
'
C:/Ruby187/lib/ruby/gems/1.8/gems/rake-10.0.3/bin/rake:33
C:/Ruby187/bin/rake:23:in `load'
C:/Ruby187/bin/rake:23