It sometimes happen that a database dump, that would want to insert into your development database, does not match the...
The sidekiq-rate-limiter gem allows rate-limiting Sidekiq jobs and works like a charm. However, it needs to be...
If a model inherits from others or uses many concerns / traits, it might be hard to see in the code...
When logging in Rails, you can use the log_tags configuration option to add extra information to each line, like...
ActiveRecord provides the ids method to pluck ids from a scope, but what if you need to pluck Global IDs...
This is an extract from the linked article. It shows an approach on how to implement encrypted passwords with the...
A flat folder structure can be cool if you have only a few folders but can be painful for huge...
Rails 5.2+ supports "verbose query logs" where it shows the source of a query in the application log.
When you use Sentry to monitor exceptions, an important feature is Sentry's error grouping mechanism. It will aggregate similar...
Rails middlewares are small code pieces that wrap requests to the application. The first middleware gets passed the request, invokes...
If you want to prevent that two processes run some code at the same time you can use the gem...
grep is the go-to CLI tool to accomplish tasks like filtering large files for arbitrary keywords. When additional context...
If you migrate a Rails application from Sprockets to Webpack(er), you can either transpile your CoffeeScript files to JavaScript...
CSP hat zum Ziel einen Browser-seitigen Mechanismus zu schaffen um einige Angriffe auf Webseiten zu verhindern, hauptsächlich XSS...
If you have a :string or :text field, you should pair it with a model validation that restricts its length...
# Basic HTML example # Javascript API (notable methods and properties) video = document.querySelector('video') video.play() video.pause() video.load() // Reset to the beginning and...
TL;DR PostgreSQL handles Rails 4+ text and string columns the same. Some libraries may still reflect on the column...
Select2 is a fantastic library for advanced dropdown boxes, but it depends on jQuery. Alternatives Tom Select
Select2 comes with AJAX support built in, using jQuery's AJAX methods. ... For remote data sources only, Select2 does not...
There is a reasonable simple way to move data between Redis servers: Simply temporarily configure the new server as a...
Speaker today is Henning Koch, Head of Development at makandra. This talk will be in German with English slides.
To make CSS rules dependent on the screen size, we use media queries: @media (max-width: 500px) { // rules for screen...
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...