updates for admin area

app/Models/AdminNotification.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class AdminNotification extends Model
+{
+    protected $fillable = ['title', 'body', 'audience', 'status', 'published_at'];
+
+    protected function casts(): array
+    {
+        return ['published_at' => 'datetime'];
+    }
+}