How to build an automatic router in php? - php

Question

I have this code:
index.php
$router = new Core\Libraries\Router();
$router->add('', ['controller' => 'HomeAdminController', 'action' => 'index']);
$router->add('home', ['controller' => 'HomeAdminController', 'action' => 'indexAction']);
$router->add('home2', ['controller' => 'HomeAdminController', 'action' => 'indexAction2']);
$router->add('home3', ['controller' => 'HomeAdminController', 'action' => 'indexAction3']);
router.php
class Router
{
protected $_routes = [];
protected $_params = [];
public function add(string $route, array $params = [])
{
$route = preg_replace('/\//', '\\/', $route);
$route = preg_replace('/\{([a-z]+)\}/', '(?P<\1>[a-z-]+)', $route);
$route = preg_replace('/\{([a-z]+):([^\}]+)\}/', '(?P<\1>\2)', $route);
$route = '/^' . $route . '$/i';
$this->_routes[$route] = $params;
}
public function getRoutes(): string
{
return $this->_routes;
}
public function match(string $url): bool
{
foreach ($this->_routes as $route => $params) {
if (preg_match($route, $url, $matches)) {
foreach ($matches as $key => $match) {
if (is_string($key)) {
$params[$key] = $match;
}
}
$this->_params = $params;
return true;
}
}
return false;
}
public function getParams(): string
{
return $this->_params;
}
public function dispatch(string $url)
{
$url = $this->removeQueryStringVariables($url);
if ($this->match($url)) {
$controller = $this->_params['controller'];
$controller = $this->convertToStudlyCaps($controller);
$controller = $this->getNamespace() . $controller;
if (class_exists($controller)) {
$controller_object = new $controller($this->_params);
$action = $this->_params['action'];
$action = $this->convertToCamelCase($action);
if (is_callable([$controller_object, $action])) {
$controller_object->$action();
} else {
throw new \Exception("Method $action (in controller $controller) not found");
}
} else {
throw new \Exception("Controller class $controller not found");
}
} else {
throw new \Exception('No route matched.', 404);
}
}
protected function convertToStudlyCaps(string $string): string
{
return str_replace(' ', '', ucwords(str_replace('-', ' ', $string)));
}
protected function convertToCamelCase(string $string): string
{
return lcfirst($this->convertToStudlyCaps($string));
}
protected function removeQueryStringVariables(string $url): string
{
if ($url != '') {
$parts = explode('&', $url, 2);
if (strpos($parts[0], '=') === false) {
$url = $parts[0];
} else {
$url = '';
}
}
return $url;
}
protected function getNamespace(): string
{
$namespace = null;
$namespace = 'Controllers\\';
if (array_key_exists('namespace', $this->_params)) {
$namespace .= $this->_params['namespace'] . '\\';
}
return $namespace;
}
}
**controllers: Home.php**
class HomeAdminController extends Controllers\Controller
{
protected function before()
{
}
protected function after()
{
}
public function indexAction()
{
echo "## 1";
}
public function index()
{
echo "## 2";
$config = Registry::register("Core\Libraries\Config");
View::renderTemplate('Home/index.twig', [
'name' => 'Dave',
'colours' => ['red', 'green', 'blue']
]);
}
public function indexAction2()
{
echo "## 2";
$config = Registry::register("Core\Libraries\Config");
View::renderTemplate('Home/home2.twig', [
'name' => 'Dave',
'products' => [
[
'name' => 'Notebook',
'description' => 'Core i7',
'value' => 800.00,
'date_register' => '2017-06-22',
],
[
'name' => 'Mouse',
'description' => 'Razer',
'value' => 125.00,
'date_register' => '2017-10-25',
],
[
'name' => 'Keyboard',
'description' => 'Mechanical Keyboard',
'value' => 250.00,
'date_register' => '2017-06-23',
],
]
]);
}
public function indexAction3()
{
echo "home 3";
print_r($_POST);
View::renderTemplate('Home/home2.twig', [
'name' => 'Dave',
'colours' => ['red', 'green', 'blue']
]);
}
}
Controlers path: Controllers\Name.php
Is it possible to automatically build such routers?
I mean search the directory: Controllers \ and build for example based on files:
- Controllers \ home.php
- Controllers \ product.php
- Controllers \ contact.php
- Controllers \ productList.php
....
in an automatic way:
$ router-> add ('', ['controller' => 'HomeAdminController', 'action' => 'index']);
$ router-> add ('home', ['controller' => 'HomeAdminController', 'action' => 'indexAction']);
  $ router-> add ('home2', ['controller' => 'HomeAdminController', 'action' => 'indexAction2']);
  $ router-> add ('home3', ['controller' => 'HomeAdminController', 'action' => 'indexAction3']);
$ router-> add (product '', ['controller' => 'Product AdminController', 'action' => 'index']);
$ router-> add ('contact', ['controller' => 'ContactAdminController', 'action' => 'index']);
$ router-> add ('productList', ['controller' => 'ProductListAdminController', 'action' => 'index']);
I would like to automatically build this router so that I do not have to manually.
Does anyone know how to do it?