Association with belongs_to does not work

[makketagg]

Summary

belongs_to asscociation does not work for me. I have redefined foreign_key.

Reproduce

rails ~> 5.2
pg ~> 0.21.0

# app/models/example_category.rb
class ExampleCategory < ApplicationRecord
  has_many :examples
end

# app/models/example.rb
class Example < ApplicationRecord
  belongs_to :category, class_name: 'ExampleCategory', foreign_key: :example_category_id
end

Example.reflect_on_association(:category).association_foreign_key # => 'category_id'
Example.reflect_on_association(:category).foreign_key # => example_category_id

This callout breaks getting of association data:

dumpable/lib/dumpable/dumper.rb

Line 51 in cf9d475

object.send("#{reflection.association_foreign_key}=", object.id + @id_padding)