Bundler allows you to specify the name of the Gemfile you want to bundle with the BUNDLE_GEMFILE environment variable...
Also see the list of IRB commands. Switching the context Changes the "default receiver" of expressions. Can be used to...
To reverse lookup a fixture by its table name and id, use the following approach on ActiveRecord::FixtureSet: table = 'users...
With Ubuntu 24.04 it's not longer possible to setup FDE with BTRFS The new installer won't offer you...
TL;DR: Rails ships two methods to convert strings to constants, constantize and safe_constantize. Neither is safe for untrusted...
In development, we store files using ActiveStorage's disk service. This means that stored files are served by your Rails...
If you update Selenium regularly, you'll run into deprecation warnings similar to: WARN Selenium [:clear_local_storage] [DEPRECATION] clear...
tl;dr When a cookie includes an Expires attribute or an HTTP response includes caching headers like Expires or Cache...
In FactoryBot factories, Rails' file_fixture is not available by default. To enable it, include a support module from rspec...
Rails slightly changed the fragment cache implementation from Rails 7.0 to Rails 7.1. Unfortunately, this is incompatible with how Haml...
When Ruby objects are inspected in any modern IRB, some objects (like ActiveRecord instances) are rendered with neat colors and...
Capistrano 3 has a doctor task that will print information about Environment: Ruby, Rubygems and Bundler versions List of Capistrano...
Rails' fragment caching caches subtrees of an HTML document tree. While constructing that tree though, it can be really hard...
YJIT is Ruby's default just-in-time compiler. It is considered production-ready since Ruby 3.2 (source).
We recently migrated a Rails application from yarn to npm. We decided to go this step instead of upgrading to...
Zeitwerk is the new autoloader of Rails. It is mandatory starting with Rails 7.0. Sometimes, a model needs to know...
Rails 7.1 added the normalizes method which can be used to normalize user input. It lets you define the fields...
I noticed that tig 2.5.1 that is provided by Ubuntu 22.04 repositories has inferior bash completion than older versions after...
When using Rails credentials, you will edit the encrypted credentials for staging or production environments from time to time. To...
Slow test suites are a major pain point in projects, often due to RSpec and FactoryBot. Although minitest and fixtures...
While the main goal always is to prevent long-running queries in the first place, automatic timeouts can serve as...
When handling nested hashes the RSpec output is often hard to read. Here the gem super_diff could help.
The ActiveSupport::BroadcastLogger allows you to log to multiple sinks. You know this behavior from from the rails server command...
I recently stumbled upon the Rails feature composed_of. One of our applications dealt with a lot of addresses and...