eager loading fix

Author: rez1dent3

src/Traits/MorphOneWallet.php

@@ -42,4 +42,21 @@ public function wallet(): MorphOne
             })
         ;
     }
+
+    public function getWalletAttribute(): ?WalletModel
+    {
+        $wallet = $this->getRelationValue('wallet');
+        if ($wallet === null) {
+            return null;
+        }
+
+        assert($wallet instanceof WalletModel);
+
+        if (!$wallet->relationLoaded('holder')) {
+            $holder = app(CastServiceInterface::class)->getHolder($this);
+            $wallet->setRelation('holder', $holder);
+        }
+
+        return $wallet;
+    }
 }

tests/Units/Domain/EagerLoadingTest.php

@@ -35,8 +35,7 @@ public function testUuidDuplicate(): void
         $balances = [];
         foreach ($buyers as $buyer) {
             self::assertTrue($buyer->relationLoaded('wallet'));
-            // self::assertTrue($buyer->wallet->relationLoaded('holder'));
-            // fixme: I did not find a way to load the buyer, maybe someday I will get there.
+            self::assertTrue($buyer->wallet->relationLoaded('holder'));
 
             $uuids[] = $buyer->wallet->uuid;
             $balances[] = $buyer->wallet->balanceInt;