更新代码

app/Models/Cart.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Models;
+
+use App\User;
+use Auth;
+
+class Cart extends Model
+{
+
+    public function params()
+    {
+        return $this->belongsTo(GoodsParams::class, 'params_id', 'id');
+    }
+
+    public function user()
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    public function lesson()
+    {
+        return $this->belongsTo(SellerLesson::class);
+    }
+    public function scopeMine($query)
+    {
+        return $query->where('user_id', Auth::id());
+    }
+}