laravel_sketch/app/Models/Cart.php

<?php

namespace App\Models;

use App\Base\BaseModel;
use Illuminate\Support\Arr;

/**
 * App\Models\Cart
 *
 * @property int                             $id
 * @property int                             $user_id
 * @property int                             $goods_id
 * @property array                           $extra
 * @property int                             $count
 * @property \Illuminate\Support\Carbon|null $created_at
 * @property \Illuminate\Support\Carbon|null $updated_at
 * @method static \Illuminate\Database\Eloquent\Builder|Cart newModelQuery()
 * @method static \Illuminate\Database\Eloquent\Builder|Cart newQuery()
 * @method static \Illuminate\Database\Eloquent\Builder|Cart query()
 * @method static \Illuminate\Database\Eloquent\Builder|Cart whereCount($value)
 * @method static \Illuminate\Database\Eloquent\Builder|Cart whereCreatedAt($value)
 * @method static \Illuminate\Database\Eloquent\Builder|Cart whereExtra($value)
 * @method static \Illuminate\Database\Eloquent\Builder|Cart whereGoodsId($value)
 * @method static \Illuminate\Database\Eloquent\Builder|Cart whereId($value)
 * @method static \Illuminate\Database\Eloquent\Builder|Cart whereUpdatedAt($value)
 * @method static \Illuminate\Database\Eloquent\Builder|Cart whereUserId($value)
 * @mixin \Eloquent
 * @property-read mixed                      $thumb
 * @property-read mixed                      $goods_name
 */
class Cart extends BaseModel
{

    protected $table = "cart";

    protected $casts = [
        "extra" => "array",
    ];

    public function getThumbAttribute()
    {
        return Arr::get($this->extra, "thumb", "");
    }

    public function getGoodsNameAttribute()
    {
        return Arr::get($this->extra, "goods_name", "");
    }
}