Session timeout redirection

The session timeout can be handled using few properties in the portal-ext.properties file. .

# Extending session automatically
session.timeout.auto.extend=false



#This property can be used to redirect to home page when the session expires.
session.timeout.redirect.on.expire=true

#Set the login url
auth.login.url=/web/guest/home


note :
for session.timeout.warning=30,
#it is redirects to http://localhost:8080/web/guest/home

for session.timeout.warning=0,
#it is redirects to
#http://localhost:8080/web/guest/home?p_p_id=58&p_p_lifecycle=0&p_p_state=maximized&p_p_mode=view&saveLastPath=0&_58_struts_action=%2flogin%2flogin&_58_redirect=%2fweb%2f10311%2fwelcome

Form re submission of/on Page Reload Errror

The property 'action-url-redirect' must be added to the liferay-portlet.xml file. This will not allow the form to be re submitted once the page is refreshed after a form submission is already done.


<action-url-redirect>true</action-url-redirect>

By default the property is false and thus the form resubmission occurs

How to get the current logged in user in liferay

There are more than one way to do this. Let's look at some of the options available.

1. User user = (User) request.getAttribute(WebKeys.USER);
   The User class is the Liferay's model User class.
   
   
2. ThemeDisplay td  = (ThemeDisplay) request.getAttribute( WebKeys.THEME_DISPLAY );
   User user = td.getUser();
   
   This ' ThemeDisplay 'class can be used to get various information about the portal page,user and theme. Classes ThemeDisplay, User and WebKeys are available in portal-service.jar
   
   
3. User currentUser = PortalUtil.getUser( request );
   
   The 'PortalUtil' has various utility functions , which come handy during Liferay Programming. This is also a part of the Portal-service.jar.
   
   
4. LiferayFacesContext liferayFacesContext = LiferayFacesContext.getInstance();
   User currentUser=liferayFacesContext.getUser();
   
   The class 'PortalFacesContext' has been renamed to 'LiferayFacesContext'.This class exists in order to assist with migrating old JSF 1.2 based projects from the legacy PortletFaces-Tools project to the new LiferayFaces project.
   
   Hope It helps you in your portal programming. Happy Coding :)