Add

app/Models/Rating.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\MorphTo;
+use Illuminate\Database\Eloquent\Model;
+
+#[Fillable(['user_id', 'category', 'stars', 'thumbs_up', 'body'])]
+class Rating extends Model
+{
+    protected function casts(): array
+    {
+        return [
+            'stars' => 'integer',
+            'thumbs_up' => 'boolean',
+        ];
+    }
+
+    public function rateable(): MorphTo
+    {
+        return $this->morphTo();
+    }
+
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class);
+    }
+}