Rails 4升级后格式化程序错误的未定义方法“标记”

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，但我在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，但这对我来说没有意义。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。

知道是什么原因造成的吗？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中。我该如何处理？

Answer 1

我也有同样的错误，通过重新初始化记录器来解决它。

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"
}

Answer 2

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位置。

另外，查看 config/initializers 以获取与日志记录相关的猴子补丁。

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。

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