/**
* Calls the closure or class/method pair assigned to route
*
* @param mixed $params Parameters to pass to the class construction or closure
* If a route calls a closure, $params is prepended to the
* URL pattern values array. If the route calls a class
* and method, $params is given the class upon construction
* and only the pattern values are given to the method
* @return mixed Whatever is returned by the closure or method
*/
public function dispatch($params = null)
{
// Process filters
if ($this->filter) {
foreach ($this->filter as $filter) {
if (!Router::hasFilter($filter)) {
throw new Exceptions\FailedFilterException("Filter '{$filter}' not registered");
}
if (!Router::handleFilter($filter)) {
throw new Exceptions\FailedFilterException("Filter '{$filter}' failed");
}
}
}
// Extract variables from URL
$vars = $this->getVars($this->url);
// Call Closure if available
if (!is_null($this->callable)) {
if ($params) {
array_unshift($vars, $params);
}
return call_user_func_array($this->callable, $vars);
}
// If no Closure, instantiate class
if (!$this->class || !class_exists($this->class)) {
throw new Exceptions\RouteException("Controller '{$this->class}' wasn't found.");
}
$controller = new $this->class($params);
// Call class method
if (method_exists($controller, $this->method) && is_callable([$controller, $this->method])) {
return call_user_func_array([$controller, $this->method], $vars);
} else {
throw new Exceptions\RouteException("Method '{$this->method}' wasn't found in Class '{$this->class}' or is not public.");
}
}
