Handle Models that no longer exist

src/Listeners/StoreOutgoingMailListener.php

@@ -132,14 +132,15 @@ protected function getModels(MessageSent $event): Collection
         $modelsArray = json_decode($models, true, 512, JSON_THROW_ON_ERROR);
 
         return collect($modelsArray)
-            ->map(function (array $tuple): Model {
+            ->map(function (array $tuple): ?Model {
                 /** @var Model $model */
                 $model = $tuple['model'];
                 $id = $tuple['id'];
 
-                /** @phpstan-ignore-next-line  */
+                /** @phpstan-var ?Model */
                 return $model::find($id);
             })
+            ->filter()
             ->filter(fn (Model $model) => (new ReflectionClass($model))->implementsInterface(HasSends::class));
     }
 

tests/Listeners/StoreOutgoingMailListenerTest.php

@@ -181,6 +181,37 @@
     ]);
 });
 
+it('attaches related models to a send model by passing arguments to associateWith method but discard models that no longer exist', function () {
+    $testModel = TestModel::create();
+    $anotherTestModel = AnotherTestModel::create();
+
+    $mailable = new TestMailWithRelatedModelsHeaderPassAsArguments($testModel, $anotherTestModel);
+
+    $testModel->delete();
+
+    Mail::to('[email protected]')
+        ->send($mailable);
+
+    assertDatabaseHas('sends', [
+        'mail_class' => null,
+        'subject' => '::subject::',
+        'to' => json_encode(['[email protected]' => null]),
+        'cc' => null,
+        'bcc' => null,
+        ['sent_at', '!=', null],
+    ]);
+    assertDatabaseMissing('sendables', [
+        'send_id' => 1,
+        'sendable_type' => TestModel::class,
+        'sendable_id' => 1,
+    ]);
+    assertDatabaseHas('sendables', [
+        'send_id' => 1,
+        'sendable_type' => AnotherTestModel::class,
+        'sendable_id' => 2,
+    ]);
+});
+
 it('attaches related models to a send model based on the public properties of the mail class', function () {
     $testModel = TestModel::create();