5.2.1

CHANGELOG.md

@@ -5,6 +5,23 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [5.2.1] - 2026-02-25
+
+### Fixed
+
+Add missing `[JsonPropertyName]` attributes to properties in the following derived classes:
+
+- `JsonApiResource<T>.Attributes`
+- `JsonApiRelationship<T>.Data`
+- `JsonApiCollectionRelationship<T>.Data`
+
+### Remarks
+
+This change addresses an oversight in previous versions of the library in which some derived generic class properties were missing the `JsonPropertyName` attribute. This introduced errors in the deserialization and serialization processes:
+
+- Deserialized documents would set the property values for the base class, losing the advantage of the generic type property.
+- Serialized documents would produce a second property without the overriding `JsonPropertyName`, falling back to the active `JsonSerializerOptions` instance (if any).
+
 ## [5.2.0] - 2026-02-25
 
 ### Changed
@@ -118,6 +135,7 @@ Additionally, this version aims to be more idiomatic by renaming class propertie
 
 Initial release.
 
+[5.2.1]: https://github.com/twcrews/jsonapi-client/compare/5.2.0...5.2.1
 [5.2.0]: https://github.com/twcrews/jsonapi-client/compare/5.1.0...5.2.0
 [5.1.0]: https://github.com/twcrews/jsonapi-client/compare/5.0.0...5.1.0
 [5.0.0]: https://github.com/twcrews/jsonapi-client/compare/4.0.0...5.0.0

Crews.Web.JsonApiClient/Crews.Web.JsonApiClient.csproj

@@ -9,7 +9,7 @@
 
   <PropertyGroup>
     <PackageId>Crews.Web.JsonApiClient</PackageId>
-    <PackageVersion>5.2.0</PackageVersion>
+    <PackageVersion>5.2.1</PackageVersion>
     <Authors>Tommy Crews</Authors>
     <Description>
       A library containing serialization models and methods for the JSON:API specification.

Crews.Web.JsonApiClient/JsonApiRelationship.cs

@@ -44,6 +44,7 @@ public record JsonApiRelationship<T> : JsonApiRelationship where T : JsonApiReso
     /// <summary>
     /// Gets or sets the data payload associated with the response or request.
     /// </summary>
+    [JsonPropertyName("data")]
     public new T? Data { get; init; }
 }
 
@@ -59,5 +60,6 @@ public record JsonApiCollectionRelationship<T> : JsonApiRelationship where T : I
     /// <summary>
     /// Gets or sets the data payload associated with the response or request.
     /// </summary>
+    [JsonPropertyName("data")]
     public new T? Data { get; init; }
 }

Crews.Web.JsonApiClient/JsonApiResource.cs

@@ -43,6 +43,7 @@ public record JsonApiResource<T> : JsonApiResource
     /// <summary>
     /// Gets or sets the collection of custom attributes associated with this object.
     /// </summary>
+    [JsonPropertyName("attributes")]
     public new T? Attributes { get; init; }
 }