undefined方法'<<'為true：TrueClass

Question

我有這個奇怪的錯誤（對我來說），我不知道為什么會這樣。

有時，當我調用RestClient.get 'http://google.com'我得到了一個響應，有時我收到此錯誤undefined method '<<' for true:TrueClass

我正在使用Rails 4.1.8，Ruby 2.1.5p273和RestClient 1.7.2

    2.1.5 :010 > RestClient.get 'https://google.com'
NoMethodError: undefined method `<<' for true:TrueClass
    from /home/ivan/.rvm/gems/ruby-2.1.5/gems/rest-client-1.7.2/lib/restclient/request.rb:525:in `log_request'
    from /home/ivan/.rvm/gems/ruby-2.1.5/gems/rest-client-1.7.2/lib/restclient/request.rb:410:in `transmit'
    from /home/ivan/.rvm/gems/ruby-2.1.5/gems/rest-client-1.7.2/lib/restclient/request.rb:176:in `execute'
    from /home/ivan/.rvm/gems/ruby-2.1.5/gems/rest-client-1.7.2/lib/restclient/request.rb:41:in `execute'
    from /home/ivan/.rvm/gems/ruby-2.1.5/gems/rest-client-1.7.2/lib/restclient.rb:65:in `get'
    from (irb):10
    from /home/ivan/.rvm/gems/ruby-2.1.5/gems/railties-4.1.8/lib/rails/commands/console.rb:90:in `start'
    from /home/ivan/.rvm/gems/ruby-2.1.5/gems/railties-4.1.8/lib/rails/commands/console.rb:9:in `start'
    from /home/ivan/.rvm/gems/ruby-2.1.5/gems/railties-4.1.8/lib/rails/commands/commands_tasks.rb:69:in `console'
    from /home/ivan/.rvm/gems/ruby-2.1.5/gems/railties-4.1.8/lib/rails/commands/commands_tasks.rb:40:in `run_command!'
    from /home/ivan/.rvm/gems/ruby-2.1.5/gems/railties-4.1.8/lib/rails/commands.rb:17:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'

Answer 1

您的RestClient.log設置為true 。 截取二傳手，找出發生的地方：

def RestClient.log=(value)
  raise "HERE!"
end

然后只需等待異常觸發，然后從堆棧跟蹤中查看誰分配了傻值。 :)