Add hook for default jsonapi object.

Author: beauby

lib/jsonapi/rails/action_controller.rb

@@ -40,6 +40,10 @@ def deserializable_resource(key, options = {}, &block)
         end
       end
 
+      def jsonapi_object
+        nil
+      end
+
       def jsonapi_expose
         {
           url_helpers: ::Rails.application.routes.url_helpers

lib/jsonapi/rails/railtie.rb

@@ -30,11 +30,13 @@ class Railtie < ::Rails::Railtie
           ::ActionController::Renderers.add(:jsonapi) do |resources, options|
             self.content_type ||= Mime[:jsonapi]
 
+            options = options.dup
             # Renderer proc is evaluated in the controller context.
             if (pagination_links = jsonapi_pagination(resources))
               (options[:links] ||= {}).merge!(pagination_links)
             end
-            options[:expose] = jsonapi_expose.merge!(options[:expose] || {})
+            options[:expose]  = jsonapi_expose.merge!(options[:expose] || {})
+            options[:jsonapi] = options[:jsonapi_object] || jsonapi_object
 
             RENDERERS[:jsonapi].render(resources, options).to_json
           end

lib/jsonapi/rails/renderer.rb

@@ -10,9 +10,6 @@ def initialize(renderer = JSONAPI::Serializable::SuccessRenderer.new)
       end
 
       def render(resources, options)
-        opts = options.dup
-        opts[:jsonapi] = opts.delete(:jsonapi_object)
-
         @renderer.render(resources, opts)
       end
     end