Use model created_at for form submission date() (#306)

* Fallback to created_at date for formsubmissions

* Don't fallback to data['date']

* Add test coverage

* 🍺

* Update test to use attribute

Author: ryanmitchell

src/Forms/Submission.php

@@ -22,7 +22,7 @@ public static function fromModel(Model $model)
     {
         return (new static())
             ->id($model->id)
-            ->date($model->data['date'] ?? Carbon::now())
+            ->date($model->created_at ?? Carbon::now())
             ->data(Arr::except($model->data, 'date'))
             ->model($model);
     }

tests/Forms/FormSubmissionTest.php

@@ -6,6 +6,7 @@
 use PHPUnit\Framework\Attributes\Test;
 use Statamic\Eloquent\Forms\FormModel;
 use Statamic\Eloquent\Forms\SubmissionModel;
+use Statamic\Facades;
 use Tests\TestCase;
 
 class FormSubmissionTest extends TestCase
@@ -81,4 +82,23 @@ public function it_should_not_overwrite_submissions()
 
         $this->assertCount(2, SubmissionModel::all());
     }
+
+    #[Test]
+    public function it_should_not_save_date_in_data()
+    {
+        $form = tap(Facades\Form::make('test')->title('Test'))
+            ->save();
+
+        $submission = tap($form->makeSubmission([
+            'name' => 'John Doe',
+        ]))->save();
+
+        $this->assertInstanceOf(Carbon::class, $submission->date());
+        $this->assertArrayNotHasKey('date', $submission->model()->data);
+
+        $fresh = \Statamic\Eloquent\Forms\Submission::fromModel($submission->model()->fresh());
+
+        $this->assertInstanceOf(Carbon::class, $fresh->date());
+        $this->assertSame($fresh->date()->format('u'), $submission->date()->format('u'));
+    }
 }