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A RubyGem adding SQL comments to indicate the origin of the SQL

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ActiveRecord::Originator

Add SQL comments to indicate the origin of the SQL.

This gem adds SQL comments indicating the origin of the part of the query. This is useful for debugging large queries.

Rails tells us where the SQL is executed, but it doesn't tell us where the SQL is constructed. This gem lets you know where the SQL is constructed! For example:

Article Load (0.1ms)  SELECT "articles".* FROM "articles" WHERE "articles"."status" = ? /* app/models/article.rb:3:in `published' */
 AND "articles"."category_id" = ? /* app/controllers/articles_controller.rb:3:in `index' */
 ORDER BY "articles"."created_at" DESC /* app/models/article.rb:4:in `order_by_latest' */

You can see where .where and .order methods are called without reading the source code. It is helpful if the query builder is complex.

Installation

Install the gem and add to the application's Gemfile by executing:

$ bundle add activerecord-originator

You do not need to do anything else. The gem will automatically add comments to the SQL. Check the logs to see the comments.

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also 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, which will create a git tag for the version, push git commits and the created tag, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/pocke/activerecord-originator.

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A RubyGem adding SQL comments to indicate the origin of the SQL

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