first upload all files

Modules/Product/Http/Middleware/SetProductSortOption.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace Modules\Product\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+
+class SetProductSortOption
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param \Illuminate\Http\Request $request
+     * @param \Closure $next
+     * @return mixed
+     */
+    public function handle(Request $request, Closure $next)
+    {
+        if ($this->shouldSetRelevanceSortOption($request)) {
+            $request->query->set('sort', 'relevance');
+        }
+
+        if ($this->shouldSetLatestSortOption($request)) {
+            $request->query->set('sort', 'latest');
+        }
+
+        return $next($request);
+    }
+
+    /**
+     * Determine if the request should set "relevance" sort option.
+     *
+     * @param \Illuminate\Http\Request $request
+     * @return void
+     */
+    private function shouldSetRelevanceSortOption($request)
+    {
+        return $request->has('query') && ! $request->has('sort');
+    }
+
+    /**
+     * Determine if the request should set "latest" sort option.
+     *
+     * @param \Illuminate\Http\Request $request
+     * @return bool
+     */
+    private function shouldSetLatestSortOption($request)
+    {
+        return ! $request->has('query') && ! $request->has('sort');
+    }
+}