When writing XLSX files, there are gems like rubyXL or axlsx. While they do offer features like formatting or graphs...
Git has two kind of tags: annotated lightweight Annotated tags are stored as full objects in the Git database. They...
In most projects I know, Cucumber test suite speed is not an issue. Of course, running 350 features takes its...
When you're using Sidekiq::Web to monitor the Sidekiq status AND have your session cookie configured to a wildcard...
RSpec allows you to mark a single Example/ExampleGroup so that only this will be run. This is very useful when...
When an Rspec example fails, I usually investigate by running that example again using rspec . However, this does not work...
You are not using javascript tests The file is served from a public folder (not via controller) Problem description...
An end-to-end test (E2E test) is a script that remote-controls a web browser with tools like Selenium...
Browsers support different types of redirects. Be very careful with these status codes: 301 Moved Permanently 308 Permanent Redirect
Slides for Henning's talk on Sep 21st 2017. Understanding sync vs. async control flow Talking to synchronous (or "blocking...
If you are using PDFKit / wkhtmltopdf, you might as well want to use custom fonts in your stylesheets. Usually this...
TL;DR: Bundler 2.0 will rename Gemfile to gems.rb and Gemfile.lock to gems.locked (sic). The old filenames will be supported...
RSpec allows defining methods inside describe/context blocks which will only exist inside them. However, classes (or any constants, for that...
There are several gems that make it easy to read and process xlsx files. Parsing the entire file at once...
Here is some JavaScript code that allows you to click the screen and get the clicked element's text contents...
You should prefer native promises to jQuery's Deferreds. Native promises are much faster than their jQuery equivalent. Native promises...
Native promises have no methods to inspect their state. You can use the promiseState function below to check whether a...
You can use local copies of gems in your Gemfile like this: gem 'spreewald', path: '~/gems/spreewald' As soon as you...
rack-cargo gives your API a new /batch route that lets clients perform multiple API calls with a single request...
Use Traim to build a RESTful API for your ActiveRecord models with very little code. Traim assumes your API resources...
I often see the use of || to set a default value for a variable that might be nil, null or...
select2 is a great jQuery library to make (large) fields more usable. For Bootstrap 3 there is select2-bootstrap-theme...
I needed to make sure that an element is visible and not overshadowed by an element that has a higher...
When storing a file with Carrierwave, it is always cached prior to actually storing it (to support form roundtrips).