This is part of the Semicolon&Sons Code Diary - consisting of lessons learned on the job. You're in the rails category.
Last Updated: 2024-11-21
Sometimes you want to create fake association - e.g. all the zip_files associated with
a Product, but you don't want to / can't built the association using has_many
throughs and friends.
The trick is to combine a joins clause (to get the related tables), with a
nested where clause, to work with the conditions, and some data based on an
existing method (e.g. the downloads method, already existent.)
def zip_files
ZipFile
.with_attached_zip
.joins(:subject)
.where(subjects: { product: downloads })
end