If you migrate a Rails application from Sprockets to Webpack(er), you can either transpile your CoffeeScript files to JavaScript...
CSP hat zum Ziel einen Browser-seitigen Mechanismus zu schaffen um einige Angriffe auf Webseiten zu verhindern, hauptsächlich XSS...
We use Sentry to be informed about different kinds of issues. One of the key features is that you are...
"Open-source software (OSS) is great. Anyone can use virtually any open-source code in their projects." Well, it depends...
If you have a :string or :text field, you should pair it with a model validation that restricts its length...
Nokogiri is great. It will even fix invalid HTML for you, like a browser would (e.g. move block elements out...
FactoryBot allows to create traits from Enums since version 6.0.0 The automatic definition of traits for Active Record enum attributes...
# Basic HTML example # Javascript API (notable methods and properties) video = document.querySelector('video') video.play() video.pause() video.load() // Reset to the beginning and...
RubyMine has a HTTP Client that can be useful to test web APIs. Just create a .http scratch file an...
In a web application you sometimes have tasks that can not be processed during a request but need to go...
If you render markdown from user input, an attacker might be able to use this to inject javascript code into...
When an event listener on a DOM element throws an error, that error will be silenced and not interrupt your...
Speaker today is Henning Koch, Head of Development at makandra. This talk will be in German with English slides.
Running Cucumber tests while your cucumber.yml is 100% valid may still produce the following error. cucumber.yml was found, but could...
We use CarrierWave in many of our projects to store and serve files of various formats - mostly images. A common...
tl;dr Don't forget require 'English' if you use a named global such as $LAST_MATCH_INFO. Otherwise this...
betterspecs.org is a documentation on how to write better RSpec tests. Note that there are also other approaches like The...
With Rspec you can mock objects or functions, for example like this: expect(my_object).to receive(:my_function).and...
We use the whenever gem to automatically update the crontab of the servers we deploy to. By default, whenever will...
One of the earliest pieces of wisdom we are given as programmers is to not write duplicate code: Don’t...
This seems to be obvious, but you can expect Rake tasks to be called in RSpec. it 'deletes all Users...
Using git fixup helps you to speed up appending changes further back in the git history of your feature branch...
To make CSS rules dependent on the screen size, we use media queries: @media (max-width: 500px) { // rules for screen...
You can install rubygems 3.0.8 (released on February 18, 2020) to keep all the Gem::Specification#rubyforge_project deprecation warnings...