/**
* Initializes controller and checks if target method is callable
* @throws InvalidRouteException
*/
private function initController()
{
$fullClassName = $this->route->getControllerClass();
$methodName = $this->route->getControllerMethod();
if (!class_exists($fullClassName)) {
throw new InvalidRouteException('Controller class does not exist: ' . $fullClassName);
}
$this->controller = new $fullClassName();
if (!method_exists($this->controller, $methodName)) {
throw new InvalidRouteException('Controller method does not exist: ' . $methodName);
}
}
