Adding Messages to JSPs

Displaying Messages and Errors

Step 3 of 3

Any messages the user should see are now stored in either SessionMessages or SessionErrors. Next, you’ll make these messages appear in your JSPs.

1. In the guestbook-web module, open guestbook/view.jsp. Add the following block of success messages to the top of the file, just below the init.jsp include statement:

   <liferay-ui:success key="entryAdded" message="entry-added" />
   <liferay-ui:success key="entryDeleted" message="entry-deleted" />
   

   This tag accesses what’s stored in SessionMessages. It has two attributes. The first is the SessionMessages key that you provided in the GuestbookPortlet.java class’s add and delete methods. The second looks up the specified key in the Language.properties file. You could have specified a hard-coded message here, but it’s far better to provide a localized key.

2. Now open guestbook_admin/view.jsp. Add the following block of success messages in the same spot below the include:

   <liferay-ui:success key="guestbookAdded" message="guestbook-added" />
   <liferay-ui:success key="guestbookUpdated" message="guestbook-updated" />
   <liferay-ui:success key="guestbookDeleted" message="guestbook-deleted" />
   

Figure 1: Now the message displays the value you specified in `Language.properties`.

Congratulations! You’ve added useful feedback for operations in your application.

Your application is shaping up, but it is missing another important feature: permissions. Next, you’ll add permission checking for your guestbooks and entries.

Look for the next part soon!