From e6ec89f91d89b367a7312666c7f622c2a76b3dbe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jannis=20H=C3=BCbl?= <jannis.huebl@web.de>
Date: Fri, 16 Feb 2018 15:29:46 +0100
Subject: [PATCH] allow to access included in relation sideload

---
 lib/sinja.rb                       | 9 +++++++++
 lib/sinja/helpers/relationships.rb | 1 +
 2 files changed, 10 insertions(+)

diff --git a/lib/sinja.rb b/lib/sinja.rb
index 5d20636..e77245e 100644
--- a/lib/sinja.rb
+++ b/lib/sinja.rb
@@ -157,6 +157,15 @@ def data
         end
       end
 
+      def included
+        @included ||= {}
+        @included[request.path] ||= begin
+          deserialize_request_body.fetch(:included, nil)
+        rescue NoMethodError, KeyError
+          raise BadRequestError, 'Malformed {json:api} request payload'
+        end
+      end
+
       def normalize_filter_params
         return {} unless params[:filter]&.any?
 
diff --git a/lib/sinja/helpers/relationships.rb b/lib/sinja/helpers/relationships.rb
index e7579ca..90f9ef1 100644
--- a/lib/sinja/helpers/relationships.rb
+++ b/lib/sinja/helpers/relationships.rb
@@ -23,6 +23,7 @@ def dispatch_relationship_requests!(id, methods: {}, **opts)
         rels = data.fetch(:relationships, {}).to_a
         rels.each do |rel, body, rel_type=nil, count=0|
           rel_type ||= settings._resource_config[:has_one].key?(rel) ? :has_one : :has_many
+          body = body.merge(included: included) if included
           code, _, *json = dispatch_relationship_request id, rel,
             opts.merge(:body=>body, :method=>methods.fetch(rel_type, :patch))