Reusing an accessors & mutators - laravel

Question

In several of my models I have code like this
public function setTotalAttribute($value)
{
return $this->attributes['total'] = $value * 100;
}
public function getTotalAttribute($value)
{
return $value * 0.01;
}
Sometimes the field that I am mutating is called purchase or price, but the code is the same (changing 7.99 to 799 to store in the DB, and change it back on return).
If all the fields were named the same I could use a trait, however they are slightly different.... is there a way I can setup something similar to the date fields which auto-mutate to Carbon instances?

Answer 1

One solution is to define the fields that deal with dollars/cents conversion in the models that have such fields, and then use a trait to override the global mutators/accessors.
class Model
{
use HasMoneyFields;
protected $moneyFields = ['purchase', 'price', 'total'];
}
trait HasMoneyFields
{
public function getAttributeValue($key)
{
$value = parent::getAttributeValue($key);
if (property_exists($this, 'moneyFields')) {
if (in_array($key, $this->moneyFields)) {
$value /= 100;
}
}
return $value;
}
public function setAttribute($key, $value)
{
parent::setAttribute($key, $value);
if (property_exists($this, 'moneyFields')) {
if (in_array($key, $this->moneyFields)) {
$this->attributes[$key] = $value * 100;
}
}
}
}

Answer 2

You might be interested in https://github.com/topclaudy/eloquent-mutators
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Post extends Model
{
use \Awobaz\Mutator\Mutable;
protected $accessors = [
'title' => 'trim_whitespace',
'content' => 'trim_whitespace',
];
}
The package allows you to create custom accessors/mutators extensions.