/**
* yangzie入口
* 开始处理请求，如果没有指定uri，默认处理当前的uri请求,
* 如果没有指定method，则以请求的方法为主（get post put delete）
*
* @param string $uri
* @param string $method
* @param bool $return true则return，false直接输出
* @return string
*/
function yze_go($uri = null, $method = null, $return = null, $request_method = null)
{
$output_view = function ($request, $controller, $response, $return) {
$layout = new YZE_Layout($controller->get_layout(), $response, $controller);
$output = $layout->get_output();
$request->remove();
$controller->cleanup();
if ($return) {
return $output;
}
echo $output;
exit;
};
$output_header = function ($request, $controller, $response, $return) {
$output = $response->output($return);
if ($return) {
$controller->cleanup();
$request->remove();
return $output;
}
$controller->cleanup();
$request->remove();
if ($output) {
header("Location: {$output}");
}
exit;
};
try {
$request = YZE_Request::get_instance();
$session = YZE_Session_Context::get_instance();
$dba = YZE_DBAImpl::getDBA();
$format = null;
//之前已经有请求了，则copy一个新请求
if ($request->has_request()) {
$old_uri = $request->the_uri();
$format = $request->get_output_format();
$request = $request->copy();
}
$request->init($uri, $method, $format, $request_method);
// 初始化请求上下文环境,请求入栈
$controller = $request->controller();
// 如果yze_go 是从一个控制器的处理中再次调用的，则为新的控制器copy一个上下文环境
if (@$old_uri) {
$session->copy($old_uri, $request->the_uri());
}
$action = "YZE_ACTION_BEFORE_" . ($request->is_get() ? "GET" : "POST");
\yangzie\YZE_Hook::do_hook(constant($action), $controller);
$request->auth();
$dba->beginTransaction();
$response = $request->dispatch();
$dba->commit();
// content output
if (is_a($response, "\\yangzie\\YZE_View_Adapter")) {
return $output_view($request, $controller, $response, $return);
}
//header output
return $output_header($request, $controller, $response, $return);
} catch (\Exception $e) {
$controller = $request->controller();
//嵌套调用的，把异常往外层抛
//是请求的控制器自己处理异常好，还是把异常一直抛出到顶级请求来处理好？
if (!$request->is_top_request()) {
$request->remove();
throw $e;
}
try {
$dba->rollback();
if (!@$controller || is_a($e, "\\yangzie\\YZE_Suspend_Exception")) {
$controller = new YZE_Exception_Controller();
}
$response = $controller->do_exception($e);
if (!$response) {
$errController = new YZE_Exception_Controller();
$response = $errController->do_exception($e);
}
$filter_data = \yangzie\YZE_Hook::do_hook(YZE_FILTER_YZE_EXCEPTION, array("exception" => $e, "controller" => $controller, "response" => $response));
$response = $filter_data['response'];
// content output
if (is_a($response, "\\yangzie\\YZE_View_Adapter")) {
return $output_view($request, $controller, $response, $return);
}
//header output
return $output_header($request, $controller, $response, $return);
} catch (\Exception $notCatch) {
$controller = new YZE_Exception_Controller();
$controller->do_exception(new YZE_RuntimeException($notCatch->getMessage()))->output();
$request->remove();
}
}
}
/**
* 返回当前控制器的出错信息
*
* @author leeboo
*
* @param $begin_tag 每条错误消息的开始html标签
* @param $end_tag 每条错误消息的结束html标签
*
* @return string
*
*/
function yze_controller_error($begin_tag = null, $end_tag = null)
{
$session = YZE_Session_Context::get_instance();
if ($exception = YZE_Request::get_instance()->getException()) {
return $begin_tag . $exception->getMessage() . $end_tag;
}
}