module construct, add some templates

kernel/app_modules/photo/service/PhotoService.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace kernel\app_modules\photo\service;
+
+use kernel\app_modules\photo\models\Photo;
+use kernel\FormModel;
+use kernel\helpers\Debug;
+
+class PhotoService
+{
+    public function create(FormModel $form_model): false|Photo
+    {
+        $model = new Photo();
+        $model->image = $form_model->getItem('image');
+        $model->entity = $form_model->getItem('entity');
+        $model->entity_id = $form_model->getItem('entity_id');
+
+        return false;
+    }
+
+    public function update(FormModel $form_model, Photo $photo): false|Photo
+    {
+        $photo->image = $form_model->getItem('image');
+        $photo->entity = $form_model->getItem('entity');
+        $photo->entity_id = $form_model->getItem('entity_id');
+
+        if ($photo->save()){
+            return $photo;
+        }
+
+        return false;
+    }
+
+    public static function getByEntity(string $entity, int $entity_id): string
+    {
+        $photo = Photo::where("entity", $entity)->where("entity_id", $entity_id)->first();
+        return $photo->image ?? "";
+    }
+
+}