TLDR Using .includes or .eager_load with 1-n associations is dangerous. Always use .preload instead. Consider the following ActiveRecord...
Given you have an array column like this: create_table "users", force: :cascade do |t| t.integer "movie_ids", default: [], array...
We regularly have tasks that need to be performed around a deploy. Be it to notify operations about changed application...
Both knapsack and parallel_tests have the option to split groups by historic execution time. The required logs for this...
There are multiple ways to redirect URLs to a different URL in Rails, and they differ in small but important...
Rails' url_for is useful for generating routes from a Hash, but can lead to an open redirect vulnerability.
Rails' Strong Parameters enable you to allow only specific values from request params to e.g. avoid mass assignment.
An introduction to mangling When you minify ("compress", "optimize") your JavaScript for production, the names of your functions and variables...
TL;DR: Grid elements have min-width: auto in a 1fr column, which may lead to overflows. With minmax(0...
When you write your next CarrierWave uploader, consider processing your images with libvips instead of ImageMagick. Reasons for libvips
Ctrl + Alt + S > search "rubocop on save" Under "Inspections", check the highlighted box on rubocop -a Caveat: This adds a...
So you have a heading that is just barely wider than the container it should fit into, and it wraps...
We have a long-standing checklist for merge requests. However, it hardly matches the intricate requirements for design. This checklist...
It most cases it's not necessary to add a version constraint next to your gems in the Gemfile. Since...
As we are slowly switching from Cucumber scenarios to RSpec feature specs, you might be tempted to write assertions like...
Looking at the source code of the validates_numericality_of validator, it becomes clear that it converts the attribute in...
When you allow file uploads in your app, a user might upload content that hurts other users. Our primary concern...
Every Rails response has a default ETag header. In theory this would enable caching for multiple requests to the same...
In Ruby on Rails ActiveRecord::Relation#merge overwrites existing conditions on the same column. This may cause the relation to...
Capybara has a variety of finder methods like find_button to help you look up DOM elements. There are also...
Maintaining larger projects makes it more difficult to balance refactoring and upgrade tasks according to its actual value. Consider to...
Rails offers the fresh_when method to automatically compute an ETag from the given record, array of records or scope...
By activating strict_loading you force developers to address n+1 queries by preloading all associations used in the index...
journalctl _CMDLINE=dockerd podman journalctl SYSLOG_IDENTIFIER=podman identifying potential filter fields journalctl -o verbose journalctl -o json | jq