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<?php |
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/** |
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* Class Application |
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* The heart of the application |
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*/ |
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class Application |
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{ |
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/** @var mixed Instance of the controller */ |
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private $controller; |
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/** @var array URL parameters, will be passed to used controller-method */ |
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private $parameters = array(); |
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/** @var string Just the name of the controller, useful for checks inside the view ("where am I ?") */ |
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private $controller_name; |
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/** @var string Just the name of the controller's method, useful for checks inside the view ("where am I ?") */ |
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private $action_name; |
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/** |
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* Start the application, analyze URL elements, call according controller/method or relocate to fallback location |
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*/ |
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public function __construct() |
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{ |
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// create array with URL parts in $url |
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$this->splitUrl(); |
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// creates controller and action names (from URL input) |
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$this->createControllerAndActionNames(); |
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// does such a controller exist ? |
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if (file_exists(Config::get('PATH_CONTROLLER') . $this->controller_name . '.php')) { |
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// load this file and create this controller |
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// example: if controller would be "car", then this line would translate into: $this->car = new car(); |
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require Config::get('PATH_CONTROLLER') . $this->controller_name . '.php'; |
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$this->controller = new $this->controller_name(); |
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// check are controller and method existing and callable? |
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if (is_callable(array($this->controller, $this->action_name))) { |
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if (!empty($this->parameters)) { |
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// call the method and pass arguments to it |
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call_user_func_array(array($this->controller, $this->action_name), $this->parameters); |
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} else { |
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// if no parameters are given, just call the method without parameters, like $this->index->index(); |
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$this->controller->{$this->action_name}(); |
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} |
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} else { |
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// load 404 error page |
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require Config::get('PATH_CONTROLLER') . 'ErrorController.php'; |
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$this->controller = new ErrorController; |
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$this->controller->error404(); |
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} |
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} else { |
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// load 404 error page |
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require Config::get('PATH_CONTROLLER') . 'ErrorController.php'; |
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$this->controller = new ErrorController; |
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$this->controller->error404(); |
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} |
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} |
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/** |
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* Get and split the URL |
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*/ |
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private function splitUrl() |
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{ |
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if (Request::get('url')) { |
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// split URL |
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$url = trim(Request::get('url'), '/'); |
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$url = filter_var($url, FILTER_SANITIZE_URL); |
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$url = explode('/', $url); |
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// put URL parts into according properties |
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$this->controller_name = isset($url[0]) ? $url[0] : null; |
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$this->action_name = isset($url[1]) ? $url[1] : null; |
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// remove controller name and action name from the split URL |
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unset($url[0], $url[1]); |
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// rebase array keys and store the URL parameters |
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$this->parameters = array_values($url); |
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} |
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} |
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/** |
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* Checks if controller and action names are given. If not, default values are put into the properties. |
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* Also renames controller to usable name. |
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*/ |
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private function createControllerAndActionNames() |
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{ |
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// check for controller: no controller given ? then make controller = default controller (from config) |
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if (!$this->controller_name) { |
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$this->controller_name = Config::get('DEFAULT_CONTROLLER'); |
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} |
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// check for action: no action given ? then make action = default action (from config) |
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if (!$this->action_name OR (strlen($this->action_name) == 0)) { |
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$this->action_name = Config::get('DEFAULT_ACTION'); |
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} |
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// rename controller name to real controller class/file name ("index" to "IndexController") |
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$this->controller_name = ucwords($this->controller_name) . 'Controller'; |
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} |
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} |
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panique /
huge
