Code splitting is a feature of esbuild that can keep huge libraries out of the main bundle. How code splitting...
You can use rake --where task to find the source location that defines task: bundle exec rake --where assets:precompile...
With this Ruby script you can print all values in a Redis database to your console (derived from this bash...
Context and further resources Even though you can get 90% of debugging done with up to 5 basic byebug commands...
I recently noticed that better_errors allows you to to open files from within your favorite editor. However it was...
Looking at the source code of the validates_numericality_of validator, it becomes clear that it converts the attribute in...
When you allow file uploads in your app, a user might upload content that hurts other users. Our primary concern...
Every Rails response has a default ETag header. In theory this would enable caching for multiple requests to the same...
tl;dr asdf allows you to manage multiple runtime versions with a single CLI tool and is backwards compatible by...
tl;dr The strict-dynamic source list keyword allows you to simplify your CSP policy by favoring hashes and nonces...
When trying to intersect conditions of two scopes, be careful with ActiveRecord::Relation#merge: it overwrites existing conditions on the...
If you want to to create maps within SASS/SCSS-files, it normally works like this: $some-map: (key1: value1, key2: value2...
To navigate between test and test subject Rubymine requires you to set the test root sources as Test Sources Root...
Haml 6 was a major rewrite with performance in mind. To achieve a performance improvement of 1.7x, some design...
If you're using a Redis cache in Rails (e.g. :redis_cache_store), it's possible to configure additional parameters...
Capybara has a variety of finder methods like find_button to help you look up DOM elements. There are also...
Usually you add errors to :base in ActiveRecord, in case no appropriate attribute could be used to add the error...
Let's say we have posts with an attribute title that is mandatory. Our example feature request is to tag...
Rails Active Support provides some helpful methods for calculating times and dates, like Duration#ago or Duration#from...
Rails offers the fresh_when method to automatically compute an ETag from the given record, array of records or scope...
By activating strict_loading you force developers to address n+1 queries by preloading all associations used in the index...
Testing your responses in Rails allows to parse the body depending on the response MIME type with parsed_body.
We will achieve this by creating a block accepting method to optionally create and then lock a .lock File of...
Since Ruby 3.2.0 you can measure coverage support for eval statements and support has been added for the simplecov gem...