Hi Lennart, Please take a look the Vlib example and its use to ICallback interface:
public class net.sf.tapestry.vlib.Protected extends BasePage .. {
..
/**
* Checks if the user is logged in. If not, they are sent
* to the {@link Login} page before coming back to whatever this
* page is.
*
**/
public void validate(IRequestCycle cycle) throws RequestCycleException
{
Visit visit = (Visit) getVisit();
if (visit != null && visit.isUserLoggedIn())
return;
// User not logged in ... redirect through the Login page.
Login login = (Login) cycle.getPage("Login");
login.setCallback(new PageCallback(this));
throw new PageRedirectException(login);
}
..
}
public class net.sf.tapestry.vlib.pages.Login extends BasePage .. {
..
private ICallback callback;
public void setCallback(ICallback value)
{
callback = value;
fireObservedChange("callback", value);
}
public ICallback getCallback()
{
return callback;
}
..
/**
* Sets up the {@link Person} as the logged in user, creates
* a cookie for thier email address (for subsequent logins),
* and redirects to the appropriate page ({@link MyLibrary}, or
* a specified page).
*
**/
public void loginUser(Person person, IRequestCycle cycle)
throws RequestCycleException, RemoteException
{
..
// After logging in, go to the MyLibrary page, unless otherwise
// specified.
if (callback == null)
cycle.setPage("MyLibrary");
else
callback.performCallback(cycle);
..
}
}
regards Malcolm
p.s. we really need to document this in the DevelopersGuide
From: Lennart Benoot <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
CC: [EMAIL PROTECTED]
Subject: [Tapestry-developer] Web Application Platform
Date: Thu, 12 Dec 2002 15:28:10 +0100
Hey All,
I am currently in the process of defining a web application platform to provide web services. We have chosen Tapestry as MVC layer. I have a few problems I haven't been able to resolve (at least not in an elegant way):
1) I want the whole application to be available only for logged in users. We have an existing framework for security. I think when a request comes in, the front controller servlet should check wether the user has logged in. If not, reroute the user to the login page. How do I do this in tapestry?
2) Authorisation is also an important part of the web app platform. I would like to call some java-code whenever a new page is loaded. This code should check wether the user is allowed to access the page. If the user does not have the right permissions, he is rerouted to some other page. What would be a good way to do this?
Thanks in advance,
Lennart
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