Rails partials have a lot of "hidden" features and this card describes some non-obvious usages of Rails Partials.
In the past we validate and set default values for boolean attributes in Rails and not the database itself.
Not all email clients support external images in all situations, e.g. an image within a link. In some cases, a...
Carrierwave's BaseUploader can have some validations that you can use by overriding a certain method, which's expected name...
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...
To retrieve only unique combinations of the selected attributes: You can omit rows, where all selected columns are equal with...
Rails includes milliseconds in Time / DateTime objects when rendering them as JSON: JSON.parse(User.last.to_json)['created_at'] #=> "2001-01-01...
vertical-align is hard. Have you ever wanted to vertically center an icon with text? This usually means "vertically align...
When you use the :as option to map a power to a controller method you can now override the generated...
The linked article found a simple way to rewrite legacy git aliases to make them work with differently named default...
Let's assume that we have a model Movie that registers a callback function when a new instance of Movie...
I recently enjoyed debugging a Cucumber step that tried to be retryable using a patiently block: Then /^"([^"]*)" should( not)? be...
When an object is created / updated, various callbacks are executed in this order: before_validation after_validation before_save
TLDR if you define a equality method for a class you must also implement def hash. Ruby has a lot...
Our CI setup frequently sees this error while running yarn install: yarn install v1.22.19 [1/4] Resolving packages... [2/4] Fetching packages...
Timecop is a great gem to set the current time in tests. However, it is easy to introduce flakyness to...
Usually, design development starts with drafts, sketches and prototypes. These are reviewed, refined and iterated until the final design is...
In a Jasmine spec you want to spy on a function that is imported by the code under test. This...
We usually rely on VCR and WebMock to prevent any real network connection when running our unit tests.
By default subscript ( ) and superscript ( ) tags are styled with vertical-align: sub, respectively vertical-align: super by most browsers.
Usually, Unpoly compiler destructors are returned from the compiler function. However, when using async compiler functions, you can not register...
The cards editor has a feature "Cite other card" to create links to other cards in the same deck as...
You have some SVG files you want to use as icons on your website. How would you embed them?