añadir nuevas funcionalidades

app/Models/Comment.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+
+class Comment extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'content',
+        'user_id',
+        'document_id',
+        'parent_id',
+        'page',
+        'x',
+        'y'
+    ];
+
+    public function user()
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    public function document()
+    {
+        return $this->belongsTo(Document::class);
+    }
+
+    public function replies()
+    {
+        return $this->hasMany(Comment::class, 'parent_id');
+    }
+}