Example of ActiveModel::Serializer selectively

gistfile1.rb

# Gemfile
gem 'active_model_serializers', require: false

# config/initializers/active_model_serializers.rb
require "active_model"
require "active_model/serializer/version"
require "active_model/serializer"
require 'action_controller/serialization'

# in controller where you want to use active model serializer
class SomeController < ApplicationController
  include ::ActionController::Serialization
end

Is this to avoid explicitly declaring the serializer Class to use for a given response?

@fermion, sorry for late response. I think when I wrote this way back in 2014, we wanted to use active model serializers but they monkey patch rails in ways that made our test suite failed. This was a way of only using those serializers on controllers selectively. Not sure if it still works.

No worries. Can't believe that you actually found this 😆