Shows a backtrace of your queries:
User Load (0.4ms) SELECT `users`.* FROM `users` WHERE `users`.`id` = 1 LIMIT 1
Query Trail: config/initializers/warden.rb:11:in `block in <top (required)>'
config/initializers/warden.rb:15:in `block in <top (required)>'
Doc Load (18.2ms) SELECT `docs`.* FROM `docs` WHERE `docs`.`approved` = 1
Query Trail: app/views/main/_docs.html.erb:2
app/helpers/docs_helper.rb:3:in `render_main_block'
app/views/main/index.html.erb:13
app/views/main/index.html.erb:9
gem 'query_trail', group: :development