Fixes #237 Resource links missing on create (#238)

Author: garytaylor

lib/json_api_client/resource.rb

@@ -409,6 +409,7 @@ def save
         mark_as_persisted!
         if updated = last_result_set.first
           self.attributes = updated.attributes
+          self.links.attributes = updated.links.attributes
           self.relationships.attributes = updated.relationships.attributes
           clear_changes_information
         end

test/unit/creation_test.rb

@@ -35,6 +35,12 @@ def setup
           id: "1",
           attributes: {
               title: "Rails is Omakase"
+          },
+          links: {
+            self: "http://example.com/articles/1",
+            other: {
+              href: "http://example.com/other"
+            }
           }
         }
       }.to_json)
@@ -68,6 +74,16 @@ def test_can_create_with_new_record_and_save
     assert_equal "1", article.id
   end
 
+  def test_can_create_with_links
+    article = Article.new({
+                              title: "Rails is Omakase"
+                          })
+
+    assert article.save
+    assert article.persisted?
+    assert_equal "http://example.com/articles/1", article.links.self
+  end
+
   def test_can_create_with_new_record_with_relationships_and_save
     stub_request(:post, "http://example.com/articles")
       .with(headers: {content_type: "application/vnd.api+json", accept: "application/vnd.api+json"}, body: {