restore composer.json, add mysqli extension

app/Models/Cart.php

@@ -0,0 +1,71 @@
+<?php
+
+namespace App\Models;
+
+use App\Models\User;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Support\Facades\Cookie;
+
+/**
+ * Class Cart
+ * @property integer|null $user_id
+ * @property integer $product_id
+ * @property integer $count
+ * @property string|null $size
+ * @property string|null $token
+ * @mixin Model
+ */
+class Cart extends Model
+{
+    /**
+     * @var array
+     */
+    protected $guarded = ['id'];
+
+    /**
+     * @var array
+     */
+    protected $casts = [
+        'user_id' => 'integer',
+        'token' => 'string',
+        'product_id' => 'integer',
+        'count' => 'integer',
+        'size' => 'string'
+    ];
+
+    /**
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    public function product()
+    {
+        return $this->belongsTo(Product::class);//->where('parent_id', null);
+    }
+
+    /**
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    public function user()
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    /**
+     * @param $query
+     * @param $token
+     * @return mixed
+     */
+    public function scopeFindByToken($query, $token)
+    {
+        return $query->where('token', $token);
+    }
+
+    /**
+     * @param $query
+     * @param $user_id
+     * @return mixed
+     */
+    public function scopeFindByUser($query, $user_id)
+    {
+        return $query->where('user_id', $user_id);
+    }
+}