Zeitwerk is the new autoloader of Rails. It is mandatory starting with Rails 7.0. Sometimes, a model needs to know...
Canonical does not ship Ubuntu 24.04+ Vagrant images due to HashiCorps switch to the Business Source License (BSL). There is...
When using Rails credentials, you will edit the encrypted credentials for staging or production environments from time to time. To...
While the main goal always is to prevent long-running queries in the first place, automatic timeouts can serve as...
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...
Rails' default logger prefixes each log entry with timestamp and tags (like request ID). For multi-line entries, only the...
With this command you can run all the spec files which have been edited or added in the current branch...
sudo gitlab-rails console Note This takes some minutes to start Send a mail Use the following...
There are different kind of memory measurement metrics in Linux. These are the differences: Code Name Description vsz virtual memory...
I recently stumbled over a quirk in the way Ruby handles local variables that I find somewhat dangerous. Consider:
While most Rails Apps are tied to at least one external REST API, machine-to-machine communication via GraphQL is...
Add apt source: apt update -y && apt install -y gpg sudo wget curl sudo install -dm 755 /etc/apt/keyrings
Some rubygems come in platform-specific versions (i.e. "x86_64-linux") in addition to the usual "ruby" platform. This is...
If you want someone to be able to access your rails console, but don't want them to be able...
Running gem update --system will install the latest version of RubyGems. However the latest version might not be compatible with...
This card is a short summary on different ways of assigning multiple attributes to an instance of a class.
Using Capistrano, we usually have some array configurations in the config/deploy.rb file, like set :linked_files, %w[config/database.yml], so in...
If you want to find out what type of network card is used for a given network interface on a...
If you are using the routing-filter gem in your Rails 7.1 app for managing URL segments for locales or...
As we're switching from PT to Linear, I've updated the existing bash script to work for commits that...
If you want to use rsync to transfer files that don't belong to your user to another system you...
What is makandra cards? We are makandra, a team of 60 web developers, DevOps and UI/UX experts from Augsburg, Germany...
There are two ways a logout in SAML can happen: Service Provider (SP) initiated and Identity Provider (IDP) initiated logout...