From ef4186d9844e794173f28571d91689a3a77ba4d5 Mon Sep 17 00:00:00 2001
From: Jason Flax <jsfla@gmail.com>
Date: Thu, 16 Feb 2023 10:24:27 -0500
Subject: [PATCH 1/2] Add keyPath initializer for Persisted<LinkingObjects>

---
 RealmSwift/PersistedProperty.swift       | 3 +++
 RealmSwift/Tests/ModernTestObjects.swift | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/RealmSwift/PersistedProperty.swift b/RealmSwift/PersistedProperty.swift
index d094fff055..f623704f05 100644
--- a/RealmSwift/PersistedProperty.swift
+++ b/RealmSwift/PersistedProperty.swift
@@ -361,6 +361,9 @@ extension Persisted where Value: LinkingObjectsProtocol {
     public init(originProperty: String) {
         self.init(wrappedValue: Value(fromType: Value.Element.self, property: originProperty))
     }
+    public init<V>(originProperty: KeyPath<Value.Element, V>) where Value.Element: ObjectBase {
+        self.init(wrappedValue: Value(fromType: Value.Element.self, property: _name(for: originProperty)))
+    }
 }
 extension LinkingObjects: LinkingObjectsProtocol {}
 
diff --git a/RealmSwift/Tests/ModernTestObjects.swift b/RealmSwift/Tests/ModernTestObjects.swift
index b2729c5802..7407cbf0ba 100644
--- a/RealmSwift/Tests/ModernTestObjects.swift
+++ b/RealmSwift/Tests/ModernTestObjects.swift
@@ -156,7 +156,7 @@ class ModernAllTypesObject: Object {
     @Persisted var mapOptObjectId: Map<String, ObjectId?>
     @Persisted var mapOptUuid: Map<String, UUID?>
 
-    @Persisted(originProperty: "objectCol")
+    @Persisted(originProperty: \.objectCol)
     var linkingObjects: LinkingObjects<ModernAllTypesObject>
 }
 

From eb420a0bce300127d370a27415a1164590c62412 Mon Sep 17 00:00:00 2001
From: Jason Flax <jsfla@gmail.com>
Date: Thu, 16 Feb 2023 13:35:59 -0500
Subject: [PATCH 2/2] Specialize originProperty initializer for Links only;
 Update CHANGELOG

---
 CHANGELOG.md                       | 3 ++-
 RealmSwift/PersistedProperty.swift | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 44e500bd88..4fccc5ceb7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,8 @@
 x.y.z Release notes (yyyy-MM-dd)
 =============================================================
 ### Enhancements
-* None.
+* Add support for KeyPath initializiation for LinkingObjects declared with @Persisted: 
+  `@Persisted(originProperty: \.dogs) var persons: LinkingObjects<Person>
 
 ### Fixed
 * <How to hit and notice issue? what was the impact?> ([#????](https://github.com/realm/realm-swift/issues/????), since v?.?.?)
diff --git a/RealmSwift/PersistedProperty.swift b/RealmSwift/PersistedProperty.swift
index f623704f05..bb41855886 100644
--- a/RealmSwift/PersistedProperty.swift
+++ b/RealmSwift/PersistedProperty.swift
@@ -361,7 +361,7 @@ extension Persisted where Value: LinkingObjectsProtocol {
     public init(originProperty: String) {
         self.init(wrappedValue: Value(fromType: Value.Element.self, property: originProperty))
     }
-    public init<V>(originProperty: KeyPath<Value.Element, V>) where Value.Element: ObjectBase {
+    public init<V>(originProperty: KeyPath<Value.Element, V?>) where Value.Element: ObjectBase, V: ObjectBase {
         self.init(wrappedValue: Value(fromType: Value.Element.self, property: _name(for: originProperty)))
     }
 }