If you're using a Redis cache in Rails (e.g. :redis_cache_store), it's possible to configure additional parameters...
Usually you add errors to :base in ActiveRecord, in case no appropriate attribute could be used to add the error...
Maintaining larger projects makes it more difficult to balance refactoring and upgrade tasks according to its actual value. Consider to...
When you use native smooth scrolling there is no built-in method to detect the end of the scrolling animation...
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...
The change_column method for rails migrations support casting with a custom SQL statement. This allows us to change a...
If you use a newer SSH key generated with the ED25519 algorithm instead of RSA (see Create a new SSH...
This is a checklist I use to work on issues. For this purpose I extracted several cards related to the...
Rails partials have a lot of "hidden" features and this card describes some non-obvious usages of Rails Partials.
HTTP header values must only contain low-ASCII (7-bit) characters for safe transport. From RFC 7230: Historically, HTTP has...
Not all email clients support external images in all situations, e.g. an image within a link. In some cases, a...
Since Rails 7 you are able to encrypt database information with Active Record. Using Active Record Encryption will store an...
Sometimes I ran across a GitHub merge request of a gem where it was not completely obvious in which version...
In Rails 5+ you can access a helper from a controller using the helpers method: # Inside a controller action
To retrieve only unique combinations of the selected attributes: You can omit rows, where all selected columns are equal with...
The linked article shows how metapogramming macros can use define_method to make a method that can be overridden with...
When an object is created / updated, various callbacks are executed in this order: before_validation after_validation before_save
Bundler so far ignored the version specified under BUNDLED_WITH in the Gemfile.lock. This had two annoying consequences: