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NoMethodError：#< NoMethodError: ...> 的未定义方法“结果”

堆栈跟踪指的是这个地方：

def current_income
  return @current_income if defined? @current_income
  if session[:income_id] && session[:income_id] != nil
    @current_income ||= Income.find session[:income_id] # Line 13 - error place
  else
    create_current_income # Creates new income method
  end
  return @current_income
end

此错误仅在 heroku 上的生产模型中。我的配置：

  • Ruby 2.0.0 + Rails 3.2.13
  • 独角兽服务器 + Postgresql 9.3

一开始似乎线程和 Postgresql 连接存在问题，但我已经为 ActiveRecord 做了所有分叉工作：

# config/unicorn.rb

worker_processes Integer(ENV['WEB_CONCURRENCY'] || 3)
timeout Integer(ENV['WEB_TIMEOUT'] || 15)
preload_app true

before_fork do |server, worker|

  Signal.trap 'TERM' do
    puts 'Unicorn master intercepting TERM and sending myself QUIT instead'
    Process.kill 'QUIT', Process.pid
  end

  defined?(ActiveRecord::Base) and
    ActiveRecord::Base.connection.disconnect!
end  

after_fork do |server, worker|

  Signal.trap 'TERM' do
    puts 'Unicorn worker intercepting TERM and doing nothing. Wait for master to sent QUIT'
  end

  defined?(ActiveRecord::Base) and
    ActiveRecord::Base.establish_connection
end

有人遇到过类似的问题可以帮我给小费吗？

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