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.
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...
You can install rubygems 3.0.8 (released on February 18, 2020) to keep all the Gem::Specification#rubyforge_project deprecation warnings...
When you have many changes, and you want to spread them across different commits, here is a way to stage...
The linked GitHub repository is a bit like our "dev" cards deck, but groomed from a single person (Josh Branchaud...
In Active Record you can use named bindings in where-conditions. This helps you to make your code more readable...
With puma you can have concurrent requests. There are two concepts on how Puma can handle two incoming requests: Workers...
Test Driven Development is the paradigm to "first write a test, then implement the code". This guide shows how to...
Simplecov is a code coverage tool. This helps you to find out which parts of your application are not tested...
A recent patch level Ruby update caused troubles to some of us as applications started to complain about incompatible gem...
Chrome allows you to throttle the Network and the CPU. Both settings are useful to measure the performance of you...
Embedding videos on a website is very easy, add a tag to your source code and it just works...
Code comments allow for adding human readable text right next to the code: notes for other developers, and for your...
To find an input with the type hidden, you need to specify the type hidden: find_field('Some label', type...