25

rails 3.2中有没有办法(gem,插件或其他东西)知道哪一行代码触发了数据库查询?例如在我的日志中,我有:

User Load (0.4ms)  SELECT `users`.* FROM `users` WHERE `users`.`id` = 5 LIMIT 1

我如何知道触发查询的代码行?谢谢...

4

4 回答 4

34

我找到了这个解决方案:

module QueryTrace
  def self.enable!
    ::ActiveRecord::LogSubscriber.send(:include, self)
  end

  def self.append_features(klass)
    super
    klass.class_eval do
      unless method_defined?(:log_info_without_trace)
        alias_method :log_info_without_trace, :sql
        alias_method :sql, :log_info_with_trace
      end
    end
  end

  def log_info_with_trace(event)
    log_info_without_trace(event)
    trace_log = Rails.backtrace_cleaner.clean(caller).first
    if trace_log && event.payload[:name] != 'SCHEMA'
      logger.debug("   \\_ \e[33mCalled from:\e[0m " + trace_log)
    end
  end
end

在一些初始化程序中添加QueryTrace.enable!

于 2012-06-06T13:22:58.267 回答
15

使用active-record-query-trace宝石:

Gemfile

gem 'active_record_query_trace'

然后bundle,然后在config/environments/development.rb

ActiveRecordQueryTrace.enabled = true
于 2017-12-30T17:19:29.753 回答
11

导轨 5.2+

将此添加到您config/environments/test.rb或任何您想要放置线路的环境中。我正在 Rails 5 上进行测试。

  ActiveRecord::Base.verbose_query_logs = true

你会得到文件和行。

于 2019-10-22T16:01:05.730 回答
-1

你可以修改 BufferedLogger 来做你想做的事。将此文件放在您的config/initializers路径中:

require 'active_support/buffered_logger'

class ActiveSupport::BufferedLogger

  def add(severity, message = nil, progname = nil, &block)
    add_debugging_details(severity)
    @log.add(severity, message, progname, &block)
  end

  private

  EXCLUDE_CALLERS = Gem.paths.path.clone << 'script/rails' << RbConfig::CONFIG['rubylibdir'] << __FILE__

  def add_debugging_details(severity)
    caller_in_app = caller.select do |line|
      EXCLUDE_CALLERS.detect { |gem_path| line.starts_with?(gem_path) }.nil?
    end

    return if caller_in_app.empty?

    @log.add(severity, "Your code in \e[1;33m#{caller_in_app.first}\e[0;0m triggered:")
  end

end if Rails.env.development?
于 2012-06-06T11:32:21.310 回答