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我有一个奇怪的问题，我的 rake 任务在我的本地机器上运行，但不在生产中。在 PRODUCTION 中尝试相同时出现以下错误

rake 中止！未初始化的常量 User::UserGroup

当我对其进行跟踪时，得到以下输出

$ RAILS_ENV=production bundle exec rake billing:invoices --trace

** Invoke billing:invoices (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute billing:invoices
Building invoices
rake aborted!
uninitialized constant User::UserGroup
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.0.11/lib/active_record/base.rb:1205:in `compute_type'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.0.11/lib/active_record/reflection.rb:162:in `klass'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.0.11/lib/active_record/associations.rb:2107:in `initialize'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.0.11/lib/active_record/associations.rb:1984:in `new'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.0.11/lib/active_record/associations.rb:1984:in `build_join_association'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.0.11/lib/active_record/associations.rb:1948:in `build'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.0.11/lib/active_record/associations.rb:1956:in `block in build'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.0.11/lib/active_record/associations.rb:1955:in `each'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.0.11/lib/active_record/associations.rb:1955:in `build'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.0.11/lib/active_record/associations.rb:1852:in `initialize'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.0.11/lib/active_record/relation/query_methods.rb:246:in `new'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.0.11/lib/active_record/relation/query_methods.rb:246:in `build_joins'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.0.11/lib/active_record/relation/query_methods.rb:176:in `build_arel'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.0.11/lib/active_record/relation/query_methods.rb:149:in `arel'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.0.11/lib/active_record/relation/batches.rb:51:in `find_in_batches'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.0.11/lib/active_record/relation/batches.rb:20:in `find_each'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `block in execute'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/usr/local/rvm/rubies/ruby-1.9.3-p327/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/lib/rake/application.rb:116:in `invoke_task'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block (2 levels) in top_level'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block in top_level'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `block in run'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rake-0.9.2.2/bin/rake:33:in `<top (required)>'
/usr/local/rvm/gems/ruby-1.9.3-p327/bin/rake:23:in `load'
/usr/local/rvm/gems/ruby-1.9.3-p327/bin/rake:23:in `<main>'
Tasks: TOP => billing:invoices

奇怪的是它在我的本地机器上工作正常。有什么建议么 ？

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2 回答 2

1

我的猜测是您刚刚添加了一个名为类似的迁移20120221123456_users.rb，并且在其中，您有：

class SomeNameThatsNotUsers < ActiveRecord::Migration
  ...

当 Rails 执行迁移时，它希望执行定义类的文件，然后实例化该类，并在该类实例上调用 #up 或 #down。Rails 如何知道要实例化哪个类？它应该与文件名中数字前缀和下划线后面的部分相对应，因此对于像这样的文件名20120221123456_users.rb，类名必须是Users。

于 2013-04-25T08:01:49.723 回答
0

能不能把失败的rake任务源码放上来？

通常你需要写这样的东西（以避免遇到 AR 问题）：

desc "我的任务描述" task :my_task_name => :environment do # 任务代码在这里结束

于 2013-03-04T07:05:41.617 回答