phase 8 and 9

app/Models/AlertNotification.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class AlertNotification extends Model
+{
+    protected $fillable = [
+        'alert_id',
+        'value',
+        'message',
+        'is_read',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'value' => 'decimal:2',
+            'is_read' => 'boolean',
+        ];
+    }
+
+    public function alert(): BelongsTo
+    {
+        return $this->belongsTo(Alert::class);
+    }
+}