This gem logs where ActiveRecord actually loads record

ex.

D, [2015-04-15T22:13:46.928908 #66812] DEBUG -- :   User Load (0.1ms)  SELECT "users".* FROM "users"
D, [2015-04-15T22:13:46.929038 #66812] DEBUG -- :   User Load (ActiveRecord::Cause)  caused by /Users/joker/srcs/activerecord-cause/spec/activerecord/cause_spec.rb:16:in `block (3 levels) in <top (required)>'

Add this line to your application's Gemfile:

gem 'activerecord-cause'

And then execute:

$ bundle

Or install it yourself as:

$ gem install activerecord-cause

ActiveRecord::Cause.match_paths = [
  /spec\/spec_helper/,
] # default is []
ActiveRecord::Cause.log_with_sql = true # default is false
ActiveRecord::Cause.log_mode = :all # default is :single

If log_mode is :all, outputs all matched locations;

# spec/spec_helper.rb
User.all

# output to log file.
# D, [2015-04-15T22:13:46.928908 #66812] DEBUG -- :   User Load (0.1ms)  SELECT "users".* FROM "users"
# D, [2015-04-15T22:13:46.929038 #66812] DEBUG -- :   User Load (ActiveRecord::Cause)  SELECT "users".* FROM "users" caused by /Users/joker/srcs/activerecord-cause/spec/activerecord/cause_spec.rb:16:in `block (3 levels) in <top (required)>'

on Rails, Activerecord::Cause.match_paths has default [/#{Rails.root.join("app").to_s}/]

After checking out the repo, run bin/setup to install dependencies. Then, run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release to create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

1. Fork it ( https://github.com/joker1007/activerecord-cause/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request