ActiveRecord::Associations::Preloader is private API

[mtsmfm]

As you can see, it's marked as :nodoc:

https://github.com/rails/rails/blob/4aa6559beb3be90b48b35a91708181fdd2975462/activerecord/lib/active_record/associations/preloader.rb#L45

I'm not sure how to achieve preloading by only public API though, it's better to avoid using that I think.

graphql-batch/examples/association_loader.rb

Line 38 in 4ae285e

::ActiveRecord::Associations::Preloader.new.preload(records, @association_name)

[gmac]

There's a reason this is part of example code and not part of the core library. Use at your own discretion.