Promo endpoint that display only products on sale.

src/Controller/PromosController.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Krzysiej\RyobiCrawler\Controller;
+
+use Illuminate\Database\Eloquent\Builder;
+use Krzysiej\RyobiCrawler\Models\Product;
+
+final class PromosController extends BaseController
+{
+    public function __invoke(): void
+    {
+        $products = Product::whereHas('currentPrice', fn(Builder $query) => $query->whereColumn('price', '<', 'productStandardPrice'))->with(['currentPrice'])->get();
+        $this->twig->display('productList.html.twig', ['products' => $products]);
+    }
+}