Add seeders and factories for all models

database/seeds/WinningBidsTableSeeder.php

@@ -0,0 +1,24 @@
+<?php
+
+use Illuminate\Database\Seeder;
+use App\Models\WinningBids;
+use App\Models\Bidders;
+use App\Models\Items;
+
+class WinningBidsTableSeeder extends Seeder
+{
+    public function run()
+    {
+        $bidders = Bidders::all();
+        $items = Items::all();
+
+        foreach ($items as $item) {
+            if (rand(0, 1)) {
+                factory(WinningBids::class)->create([
+                    'winning_bidder_num' => $bidders->random()->idbidders,
+                    'winning_item_num' => $item->iditems,
+                ]);
+            }
+        }
+    }
+}