Question

我已按照Ruby Screencast指南从Rails 3.2升级到Rails 4。我的测试正在运行并且服务器启动，但是当我发送请求时收到错误：

ERROR NoMethodError: undefined method `tagged' for #<Formatter:0x000000057f5dc8>

/home/mahoni/.rvm/gems/ruby-2.0.0-p195/gems/activesupport-4.0.0/lib/active_support/tagged_logging.rb:67:in `tagged'
/home/mahoni/.rvm/gems/ruby-2.0.0-p195/gems/railties-4.0.0/lib/rails/rack/logger.rb:21:in `call'
/home/mahoni/.rvm/gems/ruby-2.0.0-p195/gems/quiet_assets-1.0.2/lib/quiet_assets.rb:18:in `call_with_quiet_assets'
/home/mahoni/.rvm/gems/ruby-2.0.0-p195/gems/actionpack-4.0.0/lib/action_dispatch/middleware/request_id.rb:21:in `call'
/home/mahoni/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.5.2/lib/rack/methodoverride.rb:21:in `call'
/home/mahoni/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.5.2/lib/rack/runtime.rb:17:in `call'
/home/mahoni/.rvm/gems/ruby-2.0.0-p195/gems/activesupport-4.0.0/lib/active_support/cache/strategy/local_cache.rb:83:in `call'
/home/mahoni/.rvm/gems/ruby-2.0.0-p195/gems/actionpack-4.0.0/lib/action_dispatch/middleware/static.rb:64:in `call'
/home/mahoni/.rvm/gems/ruby-2.0.0-p195/gems/railties-4.0.0/lib/rails/engine.rb:511:in `call'
/home/mahoni/.rvm/gems/ruby-2.0.0-p195/gems/railties-4.0.0/lib/rails/application.rb:97:in `call'
/home/mahoni/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.5.2/lib/rack/lock.rb:17:in `call'
/home/mahoni/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.5.2/lib/rack/content_length.rb:14:in `call'
/home/mahoni/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.5.2/lib/rack/handler/webrick.rb:60:in `service'
/home/mahoni/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/webrick/httpserver.rb:138:in `service'
/home/mahoni/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/webrick/httpserver.rb:94:in `run'
/home/mahoni/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/webrick/server.rb:295:in `block in start_thread'

我已经查看了代码，对我来说没有意义。它调用logger.tagged。变量logger后面的对象不是记录器，而是Formatter对象。这很奇怪。

知道是什么原因引起的吗？到目前为止我：

删除了我的Gemfile.lock
gem update rails
bundle install
bundle update

在这个和不同的命令。我该如何处理？

Answer 1

您使用的是客户记录器吗？

签入config/environments/development.rb。这就是通常分配记录器的地方。

另外，在config/initializers中查看与日志相关的猴子补丁。

我使用的是Chris Powell的记录器补丁，它导致了一个非常相似的错误。

如果你正在使用该补丁，那么Rails 4会有一个更新的补丁： http://cbpowell.wordpress.com/2013/08/09/beautiful-logging-for-ruby-on-rails-4/

Answer 2

我也有同样的错误，通过重新初始化记录器来摆脱它。

在config / initializers上添加了一个新文件，称为log_formatting.rb

使用此代码：

Rails.logger = ActiveSupport::Logger.new "log/mylog.log"
Rails.logger.formatter = proc{|severity,datetime,progname,msg|
    "[#{datetime.strftime("%Y-%m-%d %H:%M:%S")}] [#{severity}]: #{msg}\n"
}

Rails 4升级后，未定义的方法`标记'格式化程序错误

2 个答案: