二手车

backend/app/model/UsedCarPdfLog.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace app\Model;
+
+use support\Model;
+
+/**
+ * 二手车PDF生成日志模型
+ */
+class UsedCarPdfLog extends Model
+{
+    protected $table = 'used_car_pdf_log';
+
+    protected $fillable = [
+        'user_id',
+        'used_car_id',
+        'price_snapshot',
+        'pdf_path',
+    ];
+
+    protected $casts = [
+        'price_snapshot' => 'integer',
+        'created_at' => 'datetime',
+        'updated_at' => 'datetime',
+    ];
+
+    /**
+     * 关联用户
+     */
+    public function user()
+    {
+        return $this->belongsTo(User::class, 'user_id');
+    }
+
+    /**
+     * 关联二手车
+     */
+    public function usedCar()
+    {
+        return $this->belongsTo(UsedCar::class, 'used_car_id');
+    }
+
+    /**
+     * 作用域：按二手车筛选
+     */
+    public function scopeByUsedCar($query, int $usedCarId)
+    {
+        return $query->where('used_car_id', $usedCarId);
+    }
+
+    /**
+     * 作用域：按用户筛选
+     */
+    public function scopeByUser($query, int $userId)
+    {
+        return $query->where('user_id', $userId);
+    }
+}