Closure_tree lets your ActiveRecord models act as nodes in a tree data structure. This promises a few improvements over...
Instantiating ActiveRecord objects comes expensive. To speed up things, you can choose a more direct way to talk to your...
When working with custom transactions and use ActiveRecord::Rollback you may encounter unexpected behaviour if you try to roll back...
When a directory has more than a few thousand entries, ls will start taking really long to list its content...
If you want to find the commits that touched a specific text in a file, use git log -G 'text...
#reverse_order does not work with complex sorting constraints and may even silently create malformed SQL for rails < 5.
Rails 5 / 6 / 7 Method Uses Default Accessor Saves to Database Runs Validations Runs Callbacks Updates updated_at/updated_on Respects Readonly...
1. Sometimes you have search entries in the autocomplete of the address bar, which are higher weighted than your bookmarks...
Detect if a gem has been activated A gem is activated if it is either in the current bundle (Gemfile.lock...
We have released a new library Gemika to help test a gem against multiple versions of Ruby, gem dependencies and...
This error can be caused by the mysql2 gem under mysterious circumstances. You need to remove it with gem uninstall...
Same requests are recorded only once in vcr. Replaying a test fails, if you trigger the same request multiple times...
Rails 5 migration classes look like this now: class CreateUsers < ActiveRecord::Migration[5.0] Mind the [5.0] at the end.
ActiveSupport::Notifications provides an instrumentation API for Ruby. It is used throughout rails to publish instrumentation events that include information...
We have a new gem Minidusen which extracts Dusen's query parsing and LIKE query functionality. Minidusen can no longer...
If you were using Dusen for its query parsing and LIKE queries, we recommend to migrate to Minidusen, which extracts...
There is no build in functionally in jQuery and Prototype to extract params from a url. You can use this...
You want Spring for super-fast binstubs like bin/rails or bin/rspec which avoid Rails boot time. You want parallel_tests...
Promises are the new way™ to express "Do this, and once you're done, do that". In contrast to callbacks...
Sometimes you want to test migrations with production or staging data. Dumping single tables makes sense if a complete dump...
Angular directives with isolate scopes have three different variable binding strategies, of which one is =. Example: # HTML # Coffeescript @app.directive 'panel...
Isolate scopes offer three kinds of variable binding. One of them is &, allowing to bind a property of the isolate...
To check the currently running PG version from your Rails application (e.g. Rails console on your production server), simply do...
When your controller action raises an unhandled exception, Rails will look at the exception's class and choose an appropriate...