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web10/app/Models/Comment.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Comment extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'target_type',
+        'target_id',
+        'nickname',
+        'email',
+        'content',
+        'status',
+        'like_count',
+        'reply_content',
+        'replied_at',
+        'ip',
+        'user_agent',
+    ];
+
+    protected $casts = [
+        'replied_at' => 'datetime',
+    ];
+
+    public function product()
+    {
+        return $this->belongsTo(Product::class, 'target_id')
+            ->where('target_type', 'product');
+    }
+
+    public function article()
+    {
+        return $this->belongsTo(Article::class, 'target_id')
+            ->where('target_type', 'article');
+    }
+}