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thomas.guiseppin 2017-10-21 22:04:42 +02:00
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code/web/backend/application/core/Application.php Normal file
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<?php
/**
* Class Application
* The heart of the application
*/
class Application
{
/** @var mixed Instance of the controller */
private $controller;
/** @var array URL parameters, will be passed to used controller-method */
private $parameters = array();
/** @var string Just the name of the controller, useful for checks inside the view ("where am I ?") */
private $controller_name;
/** @var string Just the name of the controller's method, useful for checks inside the view ("where am I ?") */
private $action_name;
/**
* Start the application, analyze URL elements, call according controller/method or relocate to fallback location
*/
public function __construct()
{
// create array with URL parts in $url
$this->splitUrl();
// creates controller and action names (from URL input)
$this->createControllerAndActionNames();
// does such a controller exist ?
if (file_exists(Config::get('PATH_CONTROLLER') . $this->controller_name . '.php')) {
// load this file and create this controller
// example: if controller would be "car", then this line would translate into: $this->car = new car();
require Config::get('PATH_CONTROLLER') . $this->controller_name . '.php';
$this->controller = new $this->controller_name();
// check for method: does such a method exist in the controller ?
if (method_exists($this->controller, $this->action_name)) {
if (!empty($this->parameters)) {
// call the method and pass arguments to it
call_user_func_array(array($this->controller, $this->action_name), $this->parameters);
} else {
// if no parameters are given, just call the method without parameters, like $this->index->index();
$this->controller->{$this->action_name}();
}
} else {
header('location: ' . Config::get('URL') . 'error');
}
} else {
header('location: ' . Config::get('URL') . 'error');
}
}
/**
* Get and split the URL
*/
private function splitUrl()
{
if (Request::get('url')) {
// split URL
$url = trim(Request::get('url'), '/');
$url = filter_var($url, FILTER_SANITIZE_URL);
$url = explode('/', $url);
// put URL parts into according properties
$this->controller_name = isset($url[0]) ? $url[0] : null;
$this->action_name = isset($url[1]) ? $url[1] : null;
// remove controller name and action name from the split URL
unset($url[0], $url[1]);
// rebase array keys and store the URL parameters
$this->parameters = array_values($url);
}
}
/**
* Checks if controller and action names are given. If not, default values are put into the properties.
* Also renames controller to usable name.
*/
private function createControllerAndActionNames()
{
// check for controller: no controller given ? then make controller = default controller (from config)
if (!$this->controller_name) {
$this->controller_name = Config::get('DEFAULT_CONTROLLER');
}
// check for action: no action given ? then make action = default action (from config)
if (!$this->action_name OR (strlen($this->action_name) == 0)) {
$this->action_name = Config::get('DEFAULT_ACTION');
}
// rename controller name to real controller class/file name ("index" to "IndexController")
$this->controller_name = ucwords($this->controller_name) . 'Controller';
}
}