Trecho Order Model, single database com Laravel no modelo Multi-Tenancy. Em https://codeexperts.com.br

Order.php

<?php 

public function setShippingValueAttribute($prop)
{
   $this->attributes['shipping_value'] = $prop * 100;
}

public function getShippingValueAttribute()
{
   return $this->attributes['shipping_value'] / 100;
}

public function getItemsAttribute()
{
   return unserialize($this->attributes['items']);
}