model_serializer.rb

module ModelSerializer
  def self.serialize(object)
    object.to_json include: nil # don't include any associations - only serialize shallow object
  end

  def self.deserialize(json)
    hash = ActiveSupport::JSON.decode(json) # => { "section": { "id": 42, ... } }
    model = hash.keys.first.camelize.constantize # => Section
    attributes = hash.values.first
    object = model.new
    object.assign_attributes attributes, without_protection: true
    object
  end
end