module ActionController::Serialization

def get_serializer(resource, options = {})
  unless use_adapter?
    warn 'ActionController::Serialization#use_adapter? has been removed. '\
      "Please pass 'adapter: false' or see ActiveSupport::SerializableResource.new"
    options[:adapter] = false
  end
  options.fetch(:namespace) { options[:namespace] = namespace_for_serializer }
  serializable_resource = ActiveModelSerializers::SerializableResource.new(resource, options)
  serializable_resource.serialization_scope ||= options.fetch(:scope) { serialization_scope }
  serializable_resource.serialization_scope_name = options.fetch(:scope_name) { _serialization_scope }
  # For compatibility with the JSON renderer: `json.to_json(options) if json.is_a?(String)`.
  # Otherwise, since `serializable_resource` is not a string, the renderer would call
  # `to_json` on a String and given odd results, such as `"".to_json #=> '""'`
  serializable_resource.adapter.is_a?(String) ? serializable_resource.adapter : serializable_resource
end