在rails 3.2中有一种方法(一个gem,一个插件或其他东西)来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? THX ...
答案 0 :(得分:26)
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
在某些初始值设定项中添加QueryTrace.enable!
答案 1 :(得分:8)
使用active-record-query-trace
gem:
在Gemfile
:
gem 'active_record_query_trace'
然后bundle
,然后在config/environments/development.rb
:
ActiveRecordQueryTrace.enabled = true
答案 2 :(得分:0)
将其添加到您的config/environments/test.rb
或您想要插入线路的任何环境中。我正在5导轨上进行测试。
ActiveRecord::Base.verbose_query_logs = true
您将获得文件和行。
答案 3 :(得分:-1)
你可以修补BufferedLogger来做你想要的。将此文件放在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?