more fixes

app/Models/Notification.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class Notification extends Model
+{
+    use HasFactory;
+
+    protected $table = 'notifications';
+
+    protected $fillable = [
+        'user_id',
+        'type',
+        'data',
+        'read_at',
+    ];
+
+    protected $casts = [
+        'data' => 'array',
+        'read_at' => 'datetime',
+        'created_at' => 'datetime',
+        'updated_at' => 'datetime',
+    ];
+
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'user_id');
+    }
+
+    public function markAsRead(): void
+    {
+        if ($this->read_at === null) {
+            $this->forceFill(['read_at' => now()])->save();
+        }
+    }
+}