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<?php
/*
Class: creovel
The main class where the model, view and controller interact.
*/
class creovel
{
const VERSION = '0.02';
const RELEASE_DATE = 'Feb 02 2007 02:00:00';
// Section: Public
/*
Function: run
Runs the framework.
Parameters:
events - Assoc. array of controller, action & id.
params - Assoc. array of params.
return_as_str - *Optional* Returns controller as string.
Returns:
<controller> object or string.
*/
public function run($events = null, $params = null, $return_as_str = false)
{
// set event and params
$events = $events ? $events : self::get_events();
$params = $params ? $params : self::get_params();
// include controllers and helpers
if ( is_array($events['nested_controllers']) ) {
$path = '';
foreach ( $events['nested_controllers'] as $nested_controller ) {
self::_include_controller($path.$nested_controller);
$path .= $nested_controller.DS;
}
} else {
self::_include_controller($events['controller']);
}
// create controller object and build the framework
$controller = $events['controller'] . '_controller';
$controller = new $controller();
// set controller properties
$controller->_set_events($events);
$controller->_set_params($params);
// execute action
$controller->_execute_action();
// output to user
return $controller->_output($return_as_str);
}
/*
Function: get_events
Returns the framework events (controller, action & id).
Parameters:
event_to_return - Name of event to return.
uri - *Optional* url routing path.
Returns:
Array.
*/
public function get_events($event_to_return = null, $uri = null)
{
// read URI which was given in order to access this page, remove any trailing forward slashes
$uri = $uri ? $uri : $_SERVER['REQUEST_URI'];
$uri = explode('?', ( $uri{strlen($uri) - 1} == '/' ? substr($uri, 0, strlen($uri) - 1) : $uri ));
if (isset($_ENV['routes'][$uri[0]])) header('Location: '.$_ENV['routes'][$uri[0]]);
// get event args from uri
$args = explode('/', substr($uri[0], 1));
// check/set nested controllers
$path = '';
if ( count($args) ) foreach ( $args as $arg ) {
if ( file_exists(CONTROLLERS_PATH.$path.$arg.'_controller.php') ) {
$events['nested_controllers'][] = $arg;
}
$path .= $arg.DS;
}
// set events for framework with array indexes
switch ( true ) {
case ( count($events['nested_controllers']) > 1 ):
$events['controller'] = $events['nested_controllers'][ count($events['nested_controllers']) - 1 ];
foreach ( $args as $key => $arg ) {
if ( $arg == $events['controller'] ) {
$events['action'] = $args[ $key + 1 ];
$id = $args[ $key + 2 ];
break;
}
}
break;
case ( count($args) > 2 ):
$events['controller'] = $args[ count($args) - 3 ];
$events['action'] = $args[ count($args) - 2 ];
$id = $args[ count($args) - 1 ];
break;
default:
$events['controller'] = $args[0];
$events['action'] = $args[1];
break;
}
// return id only
if ( $event_to_return == 'id' ) {
return $id;
}
// set controller & action
$events['controller'] = $events['controller'] ? $events['controller'] : $_ENV['routes']['default']['controller'];
$events['action'] = $events['action'] ? $events['action'] : $_ENV['routes']['default']['action'];
return ( $event_to_return ? $events[$event_to_return] : $events );
}
/*
Function get_params
Returns the framework params.
Parameters:
param_to_return - Name of param to return.
Returns:
Array.
*/
public function get_params($param_to_return = null)
{
// intialize params
$params = ( $id = self::get_events('id') ) ? array('id'=>$id) : array();
$requests = array($_GET, $_POST);
// add each request add keys & values to $params
foreach ( $requests as $request ) {
if ( count($request) === 0 ) continue;
foreach ( $request as $field => $value ) $params[$field] = $value;
}
// $GLOBALS['HTTP_RAW_POST_DATA'] used for observer ajax calls
// Note: HTTP_RAW_POST_DATA must set to on in php.ini
if ( $GLOBALS['HTTP_RAW_POST_DATA'] ) {
$params['raw_post'] = str_replace('&_=', '', $GLOBALS['HTTP_RAW_POST_DATA']);
}
// unset blank vaiable set by $GLOBALS['HTTP_RAW_POST_DATA']
unset($params['_']);
return ( $param_to_return ? $params[$param_to_return] : $params );
}
// Section: Private
/*
Function: _include_controller
Includes the required files for a controller and the controller helpers.
Parameters:
controller_path - Server path of controller to include.
*/
private function _include_controller($controller_path)
{
// include application controller
$controllers = array_merge(array('application'), explode(DS, $controller_path));
$path = '';
foreach ( $controllers as $controller ) {
$class = $controller . '_controller';
$controller_path = CONTROLLERS_PATH . $path . $class . '.php';
$helper_path = HELPERS_PATH . $path . $controller . '_helper.php';
try {
if ( $class == '_controller' ) {
$_ENV['error']->add("Looking for an 'Unknown Controller' in <strong>".str_replace('_controller'.'.php', '', $controller_path)."</strong>");
}
if ( file_exists($controller_path) ) {
require_once($controller_path);
} else {
$controller_path = str_replace($class . '.php', '', $controller_path);
throw new Exception("Controller '{$class}' not found in <strong>".str_replace('_controller'.'.php', '', $controller_path)."</strong>");
}
} catch ( Exception $e ) {
// add to errors
$_ENV['error']->add($e->getMessage(), $e);
}
// include helper
if ( file_exists($helper_path) ) require_once($helper_path);
// append to path if a nested controller
$path .= str_replace('application'.DS, '', $controller.DS);
}
}
}
?>
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