Life cycle of a request object

dipayan · May 30, 2012, 1:37am

How to keep alive a request object in a Chain request process? Or how to keep alive an object through the application? and without the use of session or cookie…

Simply I want to keep it alive through my request.

softark · May 30, 2012, 4:26am

I don’t understand what you mean.

What kind of data exactly do you want to keep alive?

What use cases do you have in mind?

Anyway I think there’s no way of doing it without the use of user session.

Why don’t you use CWebUser::setState() and CWebUser::getState()?

dipayan · May 30, 2012, 9:52am

Actually i was searching for the similar thing that happens in java with “forward”. As we know using forward if we forward a request to another page then we will be able to get all the objects over there in the next page. So there remains a chain link in such requests. and in the next page to get these objects I don’t have to use session.

So basically is there any way we can do the same functionality over here. Because I have seen there is




$this->forward('');

but don’t know whether will it do the same functionality or not…

So if you can tell me how to get this kinda functionality in yii, it will be very helpful.

Thanks for the reply.

jacmoe · May 30, 2012, 10:04am

PHP is state-less.

Life-cyle of a request is a http request.

It’s that simple.

softark · May 30, 2012, 10:10am

I see.

I’m sorry but I don’t have experience in Java. Maybe someone over there …

[EDIT] Oh, jacmoe has already answered.

cbell · May 31, 2012, 2:15pm

Maclein,

I don’t think this would be such a hard feature to implement your self. I would start by understanding how Java does its forwarding of requests. Read up on Java Servlet 2.4 specification.

According to the Java Doc the following occurs:

[sup]1. [/sup]Forwards a request from a servlet to another resource (servlet, JSP file, or HTML file) on the server. This method allows one servlet to do preliminary processing of a request and another resource to generate the response. For a RequestDispatcher obtained via getRequestDispatcher(), the ServletRequest object has its path elements and parameters adjusted to match the path of the target resource.

forward should be called before the response has been committed to the client (before response body output has been flushed). If the response already has been committed, this method throws an IllegalStateException. Uncommitted output in the response buffer is automatically cleared before the forward.

The request and response parameters must be either the same objects as were passed to the calling servlet’s service method or be subclasses of the ServletRequestWrapper or ServletResponseWrapper classes that wrap them.

This method sets the dispatcher type of the given request to DispatcherType.FORWARD.

[sup]1. Java EE 6 Javadoc for RequestDispatcher[/sup]

In simplest forms you would recreate the incoming request and send it to another relative resource.

cbell · May 31, 2012, 2:42pm

Since I’m new to Yii of course I did not know this but this feature already exists. See the post http://www.yiiframework.com/forum/index.php/topic/29727-redirect-with-post/

dipayan · June 2, 2012, 2:18pm

Thanks everyone for throwing some light on this topic. Thanks guys.