<?php
   namespace controllers;

   class RiskController
   {
        private $_params;

    public function __construct($params = [], $endpoint2 = null, $payload = [])
    {
        $this->params = $params;
        $this->payload = $payload;
    }

    public function get($id = null)
    {
        $service = new dataserviceriskservice();
        if ($id == null)
            return $service->findAll();
        return $service->findOne($id);
    }

    public function post($id = null)
    {
        $service = new dataserviceriskservice();
        return $service->createOne($this->payload);
    }

    public function put($id = null)
    {
        $service = new dataserviceriskservice();
        return $service->updateOne($this->payload);
    }
 }

<?php
    namespace dataservice;

    class riskservice extends service
    {
        protected function _getMapper()
        {
            $db = $this->db()->getHandle();
            return new datamapperrisks($db);
        }

        public function findOne($id)
        {
            $mapper = $this->_getMapper();
            $params = array('risk' => $id);
            return $mapper->findOne($params);
        }
    }

<?php
    namespace dataservice;

    class riskservice extends service
    {
        protected function _getMapper()
        {
            $db = $this->db()->getHandle();
            return new datamapperrisks($db);
        }

        public function findOne($id)
        {
            $mapper = $this->_getMapper();
            $params = array('risk' => $id);
            return $mapper->findOne($params);
        }
    }