When your application is open for public sign up and sends out transactional e-mails to a large number of...
In Ruby (almost) everything is an Object. While this enables a lot of powerful features, this concept might be confusing...
The ActionDispatch module of Rails gives you the helper method flash to access the flash messages in a response.
The linked article shows that there are unclear parts in the JSON specification and that different parsers treat them differently...
We had the issue, that a VCR spec failed, after updating CarrierWave from version 0.11.0 to 1.3.2. In this version...
CarrierWave comes with a set of default configuration options which make sense in most cases. However, you should review these...
tl;dr: Upgrade the gem to at least 4.0.1 When you use rspec_rails in a version < 4 with Rails...
Recently I made an upgrade from Bootstrap 3 to Bootstrap 4 in a bigger project. Here are some tips how...
When running an older version of docker-compose you might see the following error: ERROR: Version in "./docker-compose.yml" is unsupported...
By default, your terminal emulator (Gnome Terminal, Terminator, etc.) sets some kind of window title to reflect the shell type...
There are several tools for DNS debugging which offer you more or less information. Most of the time the more...
In case Ruby does not detected the expected encoding of a file automatically you can specify the known encoding manually...
The Truemail gem (not to be confused with truemail.io) allows validating email addresses, e.g. when users enter them into a...
In long diffs, it can become impossible to spot small changes in larger blocks of moved code. This may be...
Headless Chrome is a way to run the Chrome browser without a visible window. Configuring Capybara Configure the Capybara driver...
When deploying a Rails application that is using Webpacker and Capistrano, there are a few configuration tweaks that optimize the...
In the tab where you need it, open Chrome DevTools with F12, open settings with F1, scroll down to the...
IRB 1.2 (shipped with Ruby 2.7, but works on 2.5+) brings pretty syntax highlighting and multiline cursor navigation. However, pasting...
This card is mainly an explanation how variable fonts work in CSS, not necessarily a recommendation to actually use them...
Git diffs show the surrounding contexts for diff hunks. It does so by applying regular expressions to find the beginning...
Scroll and touch event listeners tend to be computationally expensive as they are triggered very often. Every time the event...
We currently test most of our gems on Travis CI, but want to migrate those tests to Github Actions. This...
If you're experiencing problems with your Google Chrome installation after an update, it might help downgrading Chrome to check...
When loading a database dump created with pg_dump into your database, you might run into an error like