Validating against 2 fields

[qwertywin]

Ok so I have been trying in vain for a day now to get this to work, Im trying to validate my 2 password fields, but all the example I try end up with bogus errors, though the root is probably that I just dont understand what is going on/wrong

so far I have

 <s:decorate id="passwordField" template="/layout/edit.xhtml">
                     <ui:define name="label">Password</ui:define>
                     <h:inputSecret id="password"
                            required="true"
                                size="45"
                           maxlength="45"
                               value="#{memberHome.instance.password}"
                                validator="#{memberValidator.validatePassword}" >
                         <f:attribute name="passwordId" value="memberProfile:confirmPassword" />
                         <f:validateLength minimum="6"/>
                         <a:support event="onblur" reRender="passwordField" bypassUpdates="true" ajaxSingle="true" />
                     </h:inputSecret>
                 </s:decorate>
                 
                 <s:decorate id="confirmPasswordField" template="/layout/edit.xhtml">
                     <ui:define name="label">Confirm Password</ui:define>
                     <h:inputSecret id="confirmPassword"
                            required="true"
                                size="45"
                           maxlength="45"
                                value="#{memberPasswordValidator.confirmPassword}"
                                validator="#{memberValidator.validatePassword}" >
                         <f:attribute name="passwordId" value="memberProfile:password" />
                              <f:validateLength minimum="6"/>
                         <a:support event="onblur" reRender="passwordField" bypassUpdates="true" ajaxSingle="true"/>
                     </h:inputSecret>
                 </s:decorate>

and in my component

@Name(value="memberValidator")
@BypassInterceptors
public class MemberValidator {

     public void validatePassword(FacesContext context, UIComponent component, Object value)
               throws ValidatorException {
          
           // Obtain the client ID of the first password field from f:attribute.
        String passwordId = (String) component.getAttributes().get("passwordId");

        // Find the actual JSF component for the client ID.
        UIInput passwordInput = (UIInput) context.getViewRoot().findComponent(passwordId);

        if( passwordInput != null ){
             // Get its value, the entered password of the first field.
             String password = (String) passwordInput.getValue();
     
             // Cast the value of the entered password of the second field back to String.
             String confirm = (String) value;
     
             // Compare the first password with the second password.
             if (!password.equals(confirm)) {
                 throw new ValidatorException(new FacesMessage("Passwords are not equal."));
             }
     
             // You can even validate the minimum password length here and throw accordingly.
             // Or, if you're smart, calculate the password strength and throw accordingly ;)
        }
     }
     
     private String confirmPassword;

     public void setConfirmPassword(String confirmPassword) {
          this.confirmPassword = confirmPassword;
     }
     public String getConfirmPassword() {
          return confirmPassword;
     }


     
}

If someone could steer me in the right direction that'd be great.

[lvdberg]

Hi Dave,

I think you're making it more complex than really necessary. I see you're using a Home component and the most simplest thing would be to create a subclass of the Home-class with an additional field for the passwordconfirmation. At the moment you type in the second field (confirmation) you can fire a simple validation in its setter (checking if both fields are the same) or you could do that after pressing a submit. In this specific case therre is really no need for an additional validator nor do you have to interact with the faces context, Seam can o that for you.

Another small remrk is about the annotation you have on the clsss membervalidator. You're basically saying you want a Seam component with a specific name, but you don't want to use Seam interceptors for it.

[qwertywin]

Hi Leo,

Thanks for the reply,

But I am wanting to show the validation on the fly as with the other required fields, though if its not possible then I guess I can live with that.

as for the @BypassInterceptors thats just left over from playing about with using the class as a registered validator.

[qwertywin]

ok sorted it out and now i have almost exactly what I want

except when I use h:inputSecret  after validation is appears to clear the field out, which is no good

                 <s:decorate id="passwordField" template="/layout/edit.xhtml">
                     <ui:define name="label">Password</ui:define>
                     <h:inputText id="password"
                            required="true"
                                size="45"
                           maxlength="45"
                               value="#{memberHome.instance.password}"
                               validator="#{memberValidator.validatePassword}" >
                          <f:attribute name="passwordId" value="memberProfile:confirmPasswordField:confirmPassword" />
                         <f:validateLength minimum="6"/>
                         <a:support event="onblur" reRender="passwordField" bypassUpdates="true" ajaxSingle="true"/>
                     </h:inputText>
                 </s:decorate>
                 
                 <s:decorate id="confirmPasswordField" template="/layout/edit.xhtml">
                     <ui:define name="label">Confirm Password</ui:define>
                     <h:inputText id="confirmPassword"
                            required="true"
                                size="45"
                           maxlength="45"
                           validator="#{memberValidator.validatePassword}">
                              <f:validateLength minimum="6"/>
                              <f:attribute name="passwordId" value="memberProfile:passwordField:password" />
                              <a:support event="onblur" reRender="confirmPasswordField" bypassUpdates="true" ajaxSingle="true"/>
                     </h:inputText>
                 </s:decorate>

and the validator

@Name("memberValidator")
@Scope(ScopeType.PAGE)
public class MemberValidator {
     
     public void validatePassword(FacesContext context, UIComponent component, Object value)
               throws ValidatorException {
          // Obtain the client ID of the first password field from f:attribute.
        String passwordId = (String) component.getAttributes().get("passwordId");

        // Find the actual JSF component for the client ID.
        UIInput passwordInput = (UIInput) context.getViewRoot().findComponent(passwordId);

        // Get its value, the entered password of the first field.
        String password = (String) passwordInput.getValue();
        

        // Cast the value of the entered password of the second field back to String.
        String confirm = (String) value;
        
       

        // Compare the first password with the second password.
        if ( confirm != null && password != null && !password.equals(confirm)) {
            throw new ValidatorException(new FacesMessage("Passwords are not equal." ) );
        }

        // You can even validate the minimum password length here and throw accordingly.
        // Or, if you're smart, calculate the password strength and throw accordingly ;)
     }
          
}

[vuntermann]

Hi Dave,

When you use h:inputSecret you should add redisplay=true to remain the contents of the field.

[serkan.s.eskici.online.nl]

See the example in:
http://docs.jboss.org/seam/2.1.2/reference/en-US/html/validation.html

[lavanyak]

Hi Dave,

What deos memberProfile refer to here in your code?

Thanks.