tl;dr You can use attribute? as shorthanded version of attribute.present?, except for numeric attributes and associations. Technical Details
If you're deploying code for your lambda function via terraform, this code is usually zipped and uploaded to Amazon...
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...
This are the steps I needed to do to add esbuild to an application that used the vanilla rails asset...
Wir arbeiten bei makandra alle auf Linux-Betriebssystemen und bedienen im DevOps- & Cloud-Bereich primär Kunden, die ebenfalls auf Linux...
Sometimes we write plain SQL queries in migrations so we don't have to mock ActiveRecord classes. These two migrations...
We use foreman to start all necessary processes for an application, which are declared in a Procfile. This is very...
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...
Jasmine is a great tool to unit test your JavaScript components without writing an expensive end-to-end test for...
Learn to create test data effectively using factories. Decouple tests by having each test start with an empty database...
JavaScript code can access and manipulate the browser's DOM tree. Using JavaScript we can add interactive behavior to our...
RSpec Rails can automatically mix in different behaviors to your tests based on their type tag, for example enabling you...
When using where.not with a Hash of multiple attributes, Rails applies logical NAND (NOT (A AND B)). This contrasts with...
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...
Field error steps Spreewald's The...
...field should have an error and The...
...field should have the error...
...steps now...
From Exploring ES6: Module imports are hoisted (internally moved to the beginning of the current scope). Therefore, it doesn’t...
Jasmine is a great way to unit test your JavaScript components without writing an expensive end-to-end test for...
Rails 6.1 has a "strict loading" mode that forces the developer to preload any association they plan to use. Associations...
A flaky test is a test that is often green, but sometimes red. It may only fail on some PCs...
If you want Sidekiq to be able to talk to Redis on staging and production servers, you need to add...
Basic validations Read the Rails Guide on ActiveRecord Validations. You should have an overview which kinds of validations are built...