Make sure that you use the correct property when editing an HTML attribute. Using innerHTML with unsafe arguments makes your...
In my career, I have consumed hundreds of REST APIs and produced dozens. Since I often see the same mistakes...
When you find similar groups of expect calls in your tests, you can improve readability by extracting the group into...
If you ever need to restore exact records from one database to another, Marshal might come in handy. Marshal.dump is...
The sprintf method has a reference by name format option: sprintf("% d : % f", { :foo => 1, :bar => 2 }) # => 1 : 2.000000
Apply Test Driven Development(TDD) to the process of building container images by defining test before writing code and automate...
Ruby has the class Rational which allows you to store exact fractions. Any calculation on these variables will now use...
Creating Nagios Config with puppet Let's have a look at the classic way of managing Nagios configuration with exported...
Every modern Rails app should have a Content Security Policy enabled. Very compatible default The following "default" is a minimal...
If you want to automatically delete old container images from your Elastic Container Registry, the solution is a quite simple...
There is a gem puppet-ghostbuster which can help you find dead code in puppet projects. To use it, (as...
For some reason you have to pass the password hash if you want to create a role in postgres. To...
The old Chrome downloads bar had several advantages over the new subtle downloads dropdown: see all (many, at least) downloads...
While upgrading CarrierWave from version 0.11.x to 3.x, we encountered some very nasty fails. Below are the basic...
All direct child directories of app are automatically added to the eager- and autoload paths. They do NOT create a...
On the Rails console, assigning an object to a variable can lead to this strange error (without stacktrace): irb > recipient...
TLDR Using .includes or .eager_load with 1-n associations is dangerous. Always use .preload instead. Consider the following ActiveRecord...
In the discussion of the difference between include and extend in Ruby, there is a misconception that extend would add...
Most of our applications use CarrierWave for file uploads. CarrierWave has an integrated processing mechanism for different file versions with...
I recently stumbled over a problem that my feature tests broke in CI because of a mismatching chromedriver version.
Given you have an array column like this: create_table "users", force: :cascade do |t| t.integer "movie_ids", default: [], array...
It's not possible to change the bwlimit of Proxmox storages via the Web-UI (at least in Proxmox 7...
View specs are a powerful tool to test several rendering paths by their cases instead of using a more costing...
The recommended additional setup of the spreewald gem, a useful set of cucumber steps, includes adding a file for defining...