tl;dr Since Rails 6+ you can use before? and after? to check if a date/time is before or after...
Case studies and experiments demonstrating the impact of web performance optimization (WPO) on user experience and business metrics.
To allow HTTP 304 responses, Rails offers the fresh_when method for controllers. The most common way is to pass...
For Rails models where only one of multiple attributes may be filled out at the same time, there is no...
When you build a JSON API you need to come up with a style to represent attributes, pagination, errors or...
If you need to convert an SVG source to PS or EPS, the most common suggestion on the interwebs is...
Greg Molnar has written a neat article about creating a single-file Rails app. This is not meant for production...
Working with a self-signed certificate is much easier, when the browser accepts it. Google Chrome Warnings from chrome might...
Sometimes the need arises for SSL in local development. We have guides for different webservers, this one is for puma...
Note Use yarn dedupe in Yarn v2+: https://yarnpkg.com/cli/dedupe This package only works with Yarn v1. Yarn v2 supports...
When your Rails application offers downloading a bunch of files as ZIP archive, you basically have two options:
Recently we detected a memory leak in one of our applications. Hunting it down, we found that the memory leak...
The linked content includes a few design patterns implemented with Ruby on Rails. What is the card indented to achieve...
This should be fixed in the latest LTS-branches of our mysql2 fork, 0.2.x-lts and 0.3.x-lts...
To read the Rails session from a Rack middleware, use env['rack.session']. It's an ActionDispatch::Request::Session object.
The inset CSS property is a shorthand that corresponds to the top, right, bottom, and/or left properties. It has the...
Issue: You have an app using jsbundling-rails and esbuild. After deploy, the assets built by esbuild are missing in...
In case you have trouble with the zeitwerk autoloader, you can check out the documentation Autoloading and Reloading Constants and...
You can use the code below to check whether the browser can make connections to the current site: await isOnline...
I recently wanted to add a model for address information but also wanted to add a unique index to those...
Imagine these models and associations: class Deck < ApplicationRecord has_many :cards end class Card < ApplicationRecord belongs_to :deck, optional: true...
When changing code in mailers, updating the corresponding mailer preview can be forgotten very easily. Mailer previews can be tested...
When redirecting you should take care to use the right HTTP status code. From controllers When redirecting from a controller...