Paie.php

<?php
namespace App\Model\Entity;

use Cake\Database\Expression\QueryExpression;
use Cake\ORM\Entity;
use Cake\ORM\TableRegistry;
use Carbon\Carbon;
use Versadrill\Periode;

/**
 * Paie Entity.
 */
class Paie extends Entity
{

    public $periode_Fin;
    public $periode_debut;
    /**
     * Fields that can be mass assigned using newEntity() or patchEntity().
     *
     * @var array
     */
    protected $_accessible = [
        '*' => true,
    ];


    protected  function _setDate(){
        $date = $this->_setPeriode()["debut"];
        return $date;
    }

    /**
     * Déclare la date de debut et de fin d'une période
     */
    protected  function _setPeriode()
    {
        $p = Periode::getStartAndEndDate($this->week,$this->year);
        $this->periode_debut =$p["debut"];
        $this->periode_Fin = $p["fin"];
        return $p;
    }
}