module ActiveRecord::AttributeMethods::Serialization::ClassMethods

def build_column_serializer(attr_name, coder, type, yaml = nil)
  # When ::JSON is used, force it to go through the Active Support JSON encoder
  # to ensure special objects (e.g. Active Record models) are dumped correctly
  # using the #as_json hook.
  coder = Coders::JSON if coder == ::JSON
  if coder == ::YAML || coder == Coders::YAMLColumn
    Coders::YAMLColumn.new(attr_name, type, **(yaml || {}))
  elsif coder.respond_to?(:new) && !coder.respond_to?(:load)
    coder.new(attr_name, type)
  elsif type && type != Object
    Coders::ColumnSerializer.new(attr_name, coder, type)
  else
    coder
  end
end