Fix a regression introduced in rails/rails@4b1122c with the upgrade to Rails
6.1.4.1.
Triggered by a call to `SELECT * FROM ip_geolocations WHERE ip_addr in ...`.
A Rails refactoring changed the way that `WHERE ... IN ...` statements
worked, which had the side effect of passing a string value to our
IpAddressType serializer where before we expected a Danbooru::IpAddress
object.
This directory contains library code used through Danbooru. This includes things like defining API clients, dealing with
sources, parsing tag searches, storing and resizing images, and so on.
Many of the files here use the Service Object pattern. Instead of putting complex code in models or controllers, it goes
here, in plain old Ruby objects (POROs). This keeps models and controllers simpler, and keeps domain logic isolated and
independent from the database and the HTTP request cycle.