The gemspec for gems allows to add metadata to your gem, some of which have a special meaning and are...
When you need information about a gem (like version(s) or install path(s)), you can use the gem binary...
Due to the way we setup Jasmine tests in our projects, you may run into various errors when Jasmine boots...
This card explains how to generate an entity relationship diagram for your Rails application. We also show how to limit...
Sometimes you will need an input field which wraps content and grows in height as soon as content gets longer...
Redis.current will be removed without replacement in redis-rb 5.0. Version 4.6.0 adds deprecation warnings for Redis.current and Redis.current=: `Redis.current...
To ensure a consistent code style for JavaScript code, we use ESLint. The workflow is similar to integrating rubocop...
Building application assets with esbuild is the new way to do it, and it's great, especially in combination with...
Attaching files to a field that is handled by Carrierwave uploaders (or maybe any other attachment solution for Rails) in...
You want to deploy new features but the latest commits are not ready for production? Then use git merge master...
Sometimes you need to access a dev server running on localhost from another machine that is not part of the...
RSpec Rails can automatically mix in different behaviors to your tests based on their type tag, for example enabling you...
Jasmine has spyOnProperty(), but it only works if the property is implemented using getter and setter functions. This is a...
In my case [...] the catalog is an XML that contains all kinds of possible products, categories and vendors and it...
TL;DR When using Cache-Control on a Rails application, make sure the Vary: Accept header is set.
Rack::SteadyETag is a Rack middleware that generates the same default ETag for responses that only differ in CSRF tokens...
The Interactive Advertising Bureau (IAB) is a European marketing association which has introduced a standard how advertising can be served...
From Exploring ES6: Module imports are hoisted (internally moved to the beginning of the current scope). Therefore, it doesn’t...
Since GitLab 10.3. you can use Mermaid in GitLab comments: Gitlab Doc. With Mermaid you can create diagrams based on...
Jasmine is a great way to unit test your JavaScript components without writing an expensive end-to-end test for...
You want to use fields in your applications. However, your desktop users may encounter some weird quirks: Aside from allowing...
The gem better_errors offers a detailed error page with an interactive REPL for better debugging. I had the issue...
Inspired by recent "git shortcut" cards I figured it would be nice to have one of these for rebasing a...
git --fixup is very handy to amend a change to a previous commit. You can then autosquash your commits with...