shops/application/controllers/controller_get_rayons_json.php

<?php
class Controller_Get_Rayons_Json extends Controller
{
	function __construct()
    {
    $this->model = new Model_Get_Rayons_Json();
	}
	
	function action_index()
    {	
		$data = $this->model->get_rayon($_POST['city'],$_POST['rayon']);		
		echo json_encode($data);
    }
}
?>