Targetable messages with severity levels

We sometimes need to target a FacesMessage instance to a specific component. For example, suppose we have p:growl and p:messages/p:message tags on the same page, and need to display some messages as p:growl and some as p:messages/p:message. PrimeFaces has a grouping feature for messages to associate a notification component to specific command components, so that messages created as a result of an action will be displayed in the associated message(s) or the growl tags.

In this recipe, we will develop samples for targetable messages. Furthermore, we will discuss the severity attribute. By means of severity, we can display messages depending on their severities.

How to do it...

Let us use one p:messages and two p:growl tags, as shown in the following code snippet:

<p:messages for="save" showDetail="true"/>
<p:growl for="change" showDetail="true"/>
<p:growl globalOnly="true" showDetail="true"/>

<p:commandButton value="Save" update...