restore composer.json, add mysqli extension

app/Services/Dashboard/Region/RegionService.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Services\Dashboard\Region;
+
+use App\Models\Region;
+
+class RegionService
+{
+    public static function deliveryPrice(Region $region, $data)
+    {
+        $toDelete = $region->deliveryPrice()->whereNotIn('power_id', array_column($data, 'power_id'))->get();
+        $toDelete->each->delete();
+
+        foreach ($data as $item) {
+            $region->deliveryPrice()->updateOrCreate(
+                ['power_id' => $item['power_id']],
+                ['price' => $item['price']]
+            );
+        }
+    }
+}