Deduplicate included resources in JSON:API response

erlendellefsen · erlendellefsen · commit bacdc8ca0bfa · 2025-03-19T12:47:28.000+01:00
diff --git a/JsonApiToolkit/Mapping/JsonApiMapper.cs b/JsonApiToolkit/Mapping/JsonApiMapper.cs
@@ -230,7 +230,10 @@ public static JsonApiDocument<ResourceObject> ToDocument<T>(
             InclusionMapper.AddIncludedResources(entity, includedRelationships, included);
             if (included.Count > 0)
             {
-                document.Included = included;
+                document.Included = included
+                    .GroupBy(r => new { r.Type, r.Id })
+                    .Select(g => g.First())
+                    .ToList();
             }
         }
 

Original file line number	Diff line number	Diff line change
`@@ -230,7 +230,10 @@ public static JsonApiDocument<ResourceObject> ToDocument<T>(`
`230`	`230`	`InclusionMapper.AddIncludedResources(entity, includedRelationships, included);`
`231`	`231`	`if (included.Count > 0)`
`232`	`232`	`{`
`233`		`- document.Included = included;`
	`233`	`+ document.Included = included`
	`234`	`+ .GroupBy(r => new { r.Type, r.Id })`
	`235`	`+ .Select(g => g.First())`
	`236`	`+ .ToList();`
`234`	`237`	`}`
`235`	`238`	`}`
`236`	`239`