Zeitwerk is the new autoloader of Rails. It is mandatory starting with Rails 7.0. Sometimes, a model needs to know...
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.
This talk shows simple and advanced usages of the ruby/debug debugger. It goes through a step by step debugging workflow...
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...
Rails 7.1 added a new method Rails.env.local?. If you want to stub the Rails env correctly, use ActiveSupport::EnvironmentInquirer like...
Rails' default logger prefixes each log entry with timestamp and tags (like request ID). For multi-line entries, only the...
Recently I needed to benchmark an Active Record query for performance measurements. I wrote a small script that runs each...
Terser is a really good minifier ("compressor") for JavaScript code. I'm often surprised by the thoughtfulness of its compressed...
testing-library are widely used testing utilities libraries for javascript dependent frontend testing. The main utilities provided are query methods...
Rails credentials are a way to store secrets in an encrypted YAML file. Usage is simple: each key in the...
Whenever you have to deal with randomness in a jasmine test there are some spy strategies to help you out...
You are given two CSS selectors that you do not control. How can you build a new selector that matches...
The Visual Viewport API enables developers to access the actually visible area of the page. This differs from the normal...
Sometimes you want to write a test for a business rule that's based on multiple variables. In your goal...
Sometimes we have to write code that behaves differently based on the version of a specific gem or the Ruby...
I recently stumbled over a quirk in the way Ruby handles local variables that I find somewhat dangerous. Consider:
tl;dr To adjust code templates in RubyMine, navigate to Settings -> Editor -> File and Code Templates. Example You can navigate...
I was recently asked to optimize the response time of a notoriously slow JSON API endpoint that was backed by...
While most Rails Apps are tied to at least one external REST API, machine-to-machine communication via GraphQL is...