[jboss-user] [JBoss Seam] - Re: Validation: @NotNull && required=true

[monkeyden]

There is no way to do it globally but you can use a phase listener:

import java.util.Iterator;
  | 
  | import javax.faces.application.FacesMessage;
  | import javax.faces.component.UIComponent;
  | import javax.faces.component.UIViewRoot;
  | import javax.faces.context.FacesContext;
  | import javax.faces.event.PhaseEvent;
  | import javax.faces.event.PhaseId;
  | import javax.faces.event.PhaseListener;
  | 
  | /**
  |  * Example messages.properties entries: 
  |  * javax.faces.validator.LengthValidator.MAXIMUM="[fieldLabel]" value is greater than allowable maximum of {0} characters.
  |  * javax.faces.validator.LengthValidator.MINIMUM="[fieldLabel]" value must contain at least {0} characters.
  | */
  | 
  | @SuppressWarnings("serial")
  | public class MessageListener implements PhaseListener {
  | 
  |     public PhaseId getPhaseId() {
  |         return PhaseId.RENDER_RESPONSE;
  |     }
  | 
  |     public void beforePhase(PhaseEvent e) {
  |         FacesContext fc = e.getFacesContext();
  |         UIViewRoot root = fc.getViewRoot();
  |         Iterator i = fc.getClientIdsWithMessages();
  |         while (i.hasNext()) {
  |             String clientId = (String) i.next();
  |             if(clientId != null) {
  | 	            UIComponent c = root.findComponent(clientId);
  | 	            if (c != null) {
  | 		            String fieldRef = 
  | 		                (String) c.getAttributes().get("fieldLabel");
  | 		            if (fieldRef != null) {
  | 		                Iterator j = fc.getMessages(clientId);
  | 		                while (j.hasNext()) {
  | 		                    FacesMessage fm = (FacesMessage) j.next();
  | 		                    String s = fm.getSummary();
  | 		                    s = s.replaceFirst("\\[fieldLabel\\]", fieldRef);
  | 		                    fm.setSummary(s);
  | 		                }
  | 		            }
  | 	            }
  |             }
  |         }
  |     }
  | 
  |     public void afterPhase(PhaseEvent e) {
  |     }
  | }
  | 

Then specify the fielLabel in the f:attribute tag:

<h:inputText value="#{contactUs.email}" size="50" maxlength="75" required="true">
  | <f:attribute name="fieldLabel" value="Email"/>
  | </h:inputText>

Or, if you require completely different messages for each component, you could specify a resource bundle key
<h:inputText value="#{contactUs.email}" size="50" maxlength="75" required="true">
  | <f:attribute name="bundleKey" value="contactus.error.email.required"/>
  | </h:inputText>

Using the latter approach, you would get the resource bundle key from the component attributes map in the listener and replace the summary text altogether.

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