heroku postgressql db迁移错误
问题描述：
我在尝试迁移heroku中的postgres数据库时出现错误。 首先我得到了：heroku postgressql db迁移错误
$ heroku run rake db:migrate --trace
rake aborted!
undefined method `find_by_name' for Gem::Specification:Class
/app/lib/tasks/auto_annotate_models.rake:22:in `<top (required)>'
/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.11/lib/active_support/depen dencies.rb:245:in `load'
/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.11/lib/active_support/depen dencies.rb:245:in `block in load'
/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.11/lib/active_support/depen dencies.rb:236:in `load_dependency'
/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.11/lib/active_support/depen dencies.rb:245:in `load'
/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.11/lib/rails/engine.rb:425:in `b lock in load_tasks'
/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.11/lib/rails/engine.rb:425:in `e ach'
/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.11/lib/rails/engine.rb:425:in `l oad_tasks'
/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.11/lib/rails/application.rb:145: in `load_tasks'
/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.11/lib/rails/railtie/configurabl e.rb:30:in `method_missing'
/app/Rakefile:7:in `<top (required)>'
/app/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/rake_module.rb:25:in `lo ad'
/app/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/rake_module.rb:25:in `lo ad_rakefile'
/app/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:583:in `r aw_load_rakefile'
/app/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:89:in `bl ock in load_rakefile'
/app/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:160:in `s tandard_exception_handling'
/app/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:88:in `lo ad_rakefile'
/app/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:72:in `bl ock in run'
/app/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:160:in `s tandard_exception_handling'
/app/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:70:in `ru n'
/app/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/bin/rake:33:in `<top (required)>'
/app/vendor/bundle/ruby/1.9.1/bin/rake:19:in `load'
/app/vendor/bundle/ruby/1.9.1/bin/rake:19:in `<main>'
有谁知道发生了什么事？
答
您是否在做迁移之前做过heroku运行rake db：create？
+0
试过，但没有帮助。 稍后找到该问题。这是一个来自annotate gem的脚本，不知道这是旧脚本还是其他人在我正在处理的项目中添加它。我已经删除了脚本，现在它正在工作。谢谢。 – 2013-02-15 23:24:59
我认为你应该发布你的Gemfile。很难说出了什么问题，我不明白这一点：“然后我在Gemfile中添加了ruby”1.9.3“，然后我得到了” – rainkinz 2013-02-08 20:50:36
神圣的文本墙蝙蝠侠！ – rfusca 2013-02-08 23:50:38
我不认为'find_by_name'或任何'find_by_xxxxx'默认支持......是吗？ – courtsimas 2014-02-18 23:14:44