When you allow file uploads in your app, a user might upload content that hurts other users. Our primary concern...
Rack::SteadyETag was a Rack middleware that generates the same default ETag for responses that only differ in XOR-masked...
Every Rails response has a default ETag header. In theory this would enable caching for multiple requests to the same...
When you're using a third party repository on your Ubuntu or Debian system and need to find out which...
Haml 6 has breaking changes regarding boolean attributes. Only aria-, data- and a list of select attributes (e.g. hidden, disabled...
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 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...
Since Ruby 3.2.0 you can measure coverage support for eval statements and support has been added for the simplecov gem...
When a nginx reverse proxy complains about upstreams sending too big headers, tweaking the buffers responsibly can help to prevent...
Rails partials have a lot of "hidden" features and this card describes some non-obvious usages of Rails Partials.
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...
In Rails 5+ you can access a helper from a controller using the helpers method: # Inside a controller action
How a macro can dynamically define a method that can be overridden with super in the same class.
In a Jasmine spec you want to spy on a function that is imported by the code under test. This...
There are cases where we have multiple exported resources that are identical. There are nodes that provide the same services...
Erfülle die Aufgaben Zeige deinem Mentor in einer Live-Demo was du umgesetzt hast. Wenn du Aufgabe 4 betrachtest...
Jasmine specs for the frontend often need some DOM elements to work with. Because creating them is such a common...
Jasmine specs that work with DOM elements often leave elements in the DOM after they're done. This will leak...
The owner of a scheduled CI/CD pipeline in GitLab will always be notified if the pipeline fails. Follow these steps...
tl;dr The Chrome DevTools are a neat collection of tools for the daily work as a web developer. If...
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