f:validator

The f:validator Facelet tag exposes the functionality of a Validator inside Facelet views. f:validator tags facilitate validation of complex data structures.

General Usage

Validators must be annotated with @FacesValidator (or declared as a validator in a faces-config.xml file) and implement Validator in order to be accessible via the f:validator tag. 


                   

                  

                 

                

               

               
Source Code

               

                
                

                 

                  

                   
  1. <ui:composition xmlns="http://www.w3.org/1999/xhtml" xmlns:f="http://xmlns.jcp.org/jsf/core"
  2. 	xmlns:ui="http://xmlns.jcp.org/jsf/facelets" xmlns:h="http://xmlns.jcp.org/jsf/html">
  3.  
  4. 	<h:form>
  5. 		<label class="control-label">#{i18n['please-enter-your-email']}</label>
  6. 		<h:inputText id="email" value="#{inputTextModelBean.text}" label="#{i18n['validate-email-label']}">
  7. 			<f:validator validatorId="com.liferay.faces.showcase.validator.EmailValidator" />
  8. 		</h:inputText>
  9. 		<br />
  10. 		<h:message for="email" />
  11. 		<hr />
  12. 		<h:commandButton value="#{i18n['submit']}">
  13. 			<f:ajax	execute="@form" render="@form" />
  14. 		</h:commandButton>
  15. 		<h:outputText value="#{inputTextModelBean.text}" />
  16. 	</h:form>
  17.  
  18. </ui:composition>

                  

                 

                 

                  

                   
  1. @ManagedBean
  2. @RequestScoped
  3. public class InputTextModelBean {
  4.  
  5. 	private Date date = new GregorianCalendar().getTime();
  6. 	private String text;
  7.  
  8. 	public Date getDate() {
  9. 		return date;
  10. 	}
  11.  
  12. 	public String getText() {
  13. 		return text;
  14. 	}
  15.  
  16. 	public void setDate(Date date) {
  17. 		this.date = date;
  18. 	}
  19.  
  20. 	public void setText(String text) {
  21. 		this.text = text;
  22. 	}
  23. }

                  

                 

                 

                  

                   
  1. @FacesValidator("com.liferay.faces.showcase.validator.EmailValidator")
  2. public class EmailValidator implements Validator {
  3.  
  4. 	private static final String EMAIL_REGEX = ".+[@].+[.].+";
  5.  
  6. 	@Override
  7. 	public void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException {
  8.  
  9. 		String message = "";
  10.  
  11. 		try {
  12. 			Pattern pattern = Pattern.compile(EMAIL_REGEX);
  13. 			Matcher matcher = pattern.matcher((String) value);
  14.  
  15. 			if (!matcher.matches()) {
  16. 				message = ValidatorHelper.getMessage(context, "email-is-not-valid");
  17.  
  18. 				FacesMessage facesMessage = new FacesMessage(FacesMessage.SEVERITY_WARN, message, message);
  19. 				throw new ValidatorException(facesMessage);
  20. 			}
  21. 		}
  22. 		catch (PatternSyntaxException pse) {
  23. 			message = ValidatorHelper.getMessage(context, "unexpected-validation-error-ocurred");
  24.  
  25. 			FacesMessage facesMessage = new FacesMessage(FacesMessage.SEVERITY_FATAL, message, message);
  26. 			throw new ValidatorException(facesMessage);
  27. 		}
  28. 	}
  29. }

                  

                 

                

               

               
 
               

              

              

               Liferay Faces Bridge Implementation 5.0.0 + Showcase Common 3.1.1 + Liferay Faces Util 3.4.1 + Mojarra 2.2.20