Array.wrap wraps argument in an array, unless it is array-like already. The behaviour is a bit saner than Array[...]. Array.wrap(nil) # => []
" foo bar \n \t boo".squish # => "foo bar boo" Time.current, Date.current, DateTime.current behaves like .now or .zone.now depending on whether a time zone is set
Enable local logging for Sentry when: Debugging Sentry event capture locally Testing error handling without polluting production metrics Developing background...
On Chrome, Firefox and modern Safari, document.scrollingElement will return the element. The behavior varies on legacy browsers that we no longer support: Old Safari versions, document.scrollingElement will return...
In development, we store files using ActiveStorage's disk service. This means that stored files are served by your Rails...
Short reference on how to quickly debug the vanilla Rails job adapters. Queue Adapters by Environment Environment Adapter
Action Mailer Basics and Previews Chapter "Task H1: Sending Confirmation Emails" from Agile Web Development with Rails (in our...
...other methods within the Method class are useful for advanced metaprogramming, though this is beyond the scope of this card. Also see Ruby: Finding where a method is defined
This card is mainly an explanation how variable fonts work in CSS, not necessarily a recommendation to actually use them...
When RubyMine reports Rubocop returning "exit code -1", upgrading Rubocop can be the fix: gem install rubocop "The logs" can...
There is no such thing as a "default order" of rows in database tables. For instance, when you paginate a...
...boring style violations. When you demonstrate an appreciation for constructive criticism, your reviewer provides better feedback . Make others better: Your code review techniques set an example for your colleagues. Effective...
A list of implementation details that make for a better / expected user experience. Have these in mind when implementing a web design. This document outlines a non-exhaustive list of...
While most Rails Apps are tied to at least one external REST API, machine-to-machine communication via GraphQL is...
...in development + test, but keep action_on_unpermitted_parameters = false in production, your application behaves different between these environments. On the other hand it forces to fix these errors in...
...Parameters).to receive(:action_on_unpermitted_parameters).and_return(false) for tests, that should behave exactly like in production...
...file. Note that this is # not guaranteed to be 100% accurate. It performs a "best guess" based # on a simple test of the first +File.blksize+ characters. # # Example: # # File.binary?('somefile.exe') # => true...
If you expect method calls in RSpec 3, be aware that the argument matchers use very liberal equality rules (more...
Same requests are recorded only once in vcr. Replaying a test fails, if you trigger the same request multiple times...
The attached compiler() function below applies JavaScript behavior to matching HTML elements as they enter the DOM. This works like an Unpoly compiler for apps that don't use Unpoly...
...you will sign out your current user whenever you switch to another app. A better way is to use our own daho.im service. All daho.im subdomains resolve to your local...
Web technology is a broad field and you cannot be an expert in all aspects. However, it is useful to...
Simplecov is a code coverage tool. This helps you to find out which parts of your application are not tested...
In long diffs, it can become impossible to spot small changes in larger blocks of moved code. This may be either a method that was moved from the top to...
...update cucumber Make sure you have a recent version of geordi (it doesn't belong in your Gemfile!): gem install geordi Check if you're using Transforms Transform is no...
The sidekiq-rate-limiter gem allows rate-limiting Sidekiq jobs and works like a charm. However, it needs to be...