Adds backtraces to your SQL queries and query logs, so you know where your queries are coming from. This only works with Rails, and is only tested with Rails 4.0.
Simple. To turn this
into this.
So now, you needn't wonder where that odd-looking or broken SQL query is coming from.
It can also turn this
Reading mysql slow query log from /usr/local/mysql/data/mysqld51-apple-slow.log
Count: 1 Time=4.32s (4s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost
SELECT "events".* FROM "events" WHERE "events"."bug_id" = ?
Count: 3 Time=2.53s (7s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost
SELECT "deploys".* FROM "deploys" WHERE "deploys"."id" = ?
Count: 3 Time=2.13s (6s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost
SELECT * FROM "slugs" WHERE (LOWER("slugs"."slug") = LOWER(?) AND "slugs"."scope" IS NULL AND "slugs"."sluggable_type" = ?) LIMIT 1
into this.
Reading mysql slow query log from /usr/local/mysql/data/mysqld51-apple-slow.log
Count: 1 Time=4.32s (4s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost
SELECT "events".* FROM "events" WHERE "events"."bug_id" = ? /* app/models/project.rb:125:in `_callback_after_617' */
Count: 3 Time=2.53s (7s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost
SELECT "deploys".* FROM "deploys" WHERE "deploys"."id" = ? /* app/controllers/projects_controller.rb:359:in `require_or_load' */
Count: 3 Time=2.13s (6s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost
SELECT * FROM "slugs" WHERE (LOWER("slugs"."slug") = LOWER(?) AND "slugs"."scope" IS NULL AND "slugs"."sluggable_type" = ?) LIMIT 1 /* app/models/observers/bug_observer.rb:23:in `create_open_event' */
To use, add SQL:Origin to your Gemfile:
gem 'sql_origin'If you would like to add three-line backtraces below every SQL query in your Rails log, add
SQLOrigin.append_to_logsomewhere in your Rails initialization (e.g., application.rb or a
config/initializer file).
If you would like to add a one-line backtrace comment to every SQL query, add
SQLOrigin.append_to_querysomewhere in your Rails initialization.
It would be typical to enable append_to_log for development and test, and
append_to_query for production, in order to keep production logs small.
By default, files not under your Rails root, and files under vendor, are
filtered from your backtrace. If you need to filter other files, add them to
{SQLOrigin::LIBRARY_PATHS}:
SQLOrigin::LIBRARY_PATHS << 'config/initializers/active_record_hacks.rb'
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