fix(JsonApiDeSerializer): allow empty collection

jaredcnance · jaredcnance · commit 884740397315 · 2018-08-14T21:35:04.000-07:00
Sequence contains no matching element
diff --git a/src/JsonApiDotNetCore/Serialization/JsonApiDeSerializer.cs b/src/JsonApiDotNetCore/Serialization/JsonApiDeSerializer.cs
@@ -221,8 +221,9 @@ private object SetHasOneRelationship(object entity,
                 var contextGraphEntity = _jsonApiContext.ContextGraph.GetContextEntity(attr.Type);
                 if(navigationPropertyValue != null && contextGraphEntity != null)
                 {
-                    var includedResource = included.Single(r => r.Type == rio.Type && r.Id == rio.Id);
-                    SetRelationships(navigationPropertyValue, contextGraphEntity, includedResource.Relationships, included);
+                    var includedResource = included.SingleOrDefault(r => r.Type == rio.Type && r.Id == rio.Id);
+                    if(includedResource != null) 
+                        SetRelationships(navigationPropertyValue, contextGraphEntity, includedResource.Relationships, included);
                 }
             }
 

Original file line number	Diff line number	Diff line change
`@@ -221,8 +221,9 @@ private object SetHasOneRelationship(object entity,`
`221`	`221`	`var contextGraphEntity = _jsonApiContext.ContextGraph.GetContextEntity(attr.Type);`
`222`	`222`	`if(navigationPropertyValue != null && contextGraphEntity != null)`
`223`	`223`	`{`
`224`		`- var includedResource = included.Single(r => r.Type == rio.Type && r.Id == rio.Id);`
`225`		`- SetRelationships(navigationPropertyValue, contextGraphEntity, includedResource.Relationships, included);`
	`224`	`+ var includedResource = included.SingleOrDefault(r => r.Type == rio.Type && r.Id == rio.Id);`
	`225`	`+ if(includedResource != null)`
	`226`	`+ SetRelationships(navigationPropertyValue, contextGraphEntity, includedResource.Relationships, included);`
`226`	`227`	`}`
`227`	`228`	`}`
`228`	`229`