[jbossseam-issues] [JBoss JIRA] Commented: (JBSEAM-432) Support @IfInvalid functionality without @IfInvalid

[Norman Richards (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBSEAM-432?page=comments#action_12348877 ] 
            
Norman Richards commented on JBSEAM-432:
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I don't understand this request.  Why does immediate="true" not work?   That will allow you to trigger a back action without applying the values.  Is there the desire is to keep the input fields populated with the potentially invalid data?  You certainly don't want to push these values to the model without validation.  That defeats the whole purpose of having validation in the first place.  Even if you did skip validation, how would you handle an error when updating the model from the input value that wasn't validated?  Am I missing something here?

If immediate="true" is really insufficient, I think the solution would be to simply not bounce between different views.  If you stay within the same view, you can preserve the invalid state in the view without corrupting the model.    The easiest way that I know of to accomplish this is to put all the panels one one view and only render the active panel.  You are free to move between panels with validation and model updates or between panels with no validation and only updating the UI component data, which will still be there if a panel is re-rendered later.

> Support @IfInvalid functionality without @IfInvalid
> ---------------------------------------------------
>
>                 Key: JBSEAM-432
>                 URL: http://jira.jboss.com/jira/browse/JBSEAM-432
>             Project: JBoss Seam
>          Issue Type: Feature Request
>          Components: Core
>    Affects Versions: 1.1.0.BETA1
>            Reporter: Christian Bauer
>         Assigned To: Norman Richards
>             Fix For: 1.1.1.GA
>
>
> The "Previous Page" button has to Update Model Values, but not Process Validations:
>             <h:form>
>                 <f:facet name="beforeInvalidField">
>                     <h:graphicImage value="/img/attention.gif"
>                                     width="18" height="18"
>                                     styleClass="attentionImage"/>
>                 </f:facet>
>                 <f:facet name="afterInvalidField">
>                     <s:message/>
>                 </f:facet>
>                 <f:facet name="aroundInvalidField">
>                     <s:span styleClass="errors"/>
>                 </f:facet>
>                 <div class="errors" align="center">
>                     <h:messages globalOnly="true"/>
>                 </div>
>               <s:validateAll>
>                 <div class="entry">
>                     <div class="label">#{messages['Firstname']}:</div>
>                     <div class="input">
>                         <s:decorate>
>                             <h:inputText size="32" required="true"
>                                          value="#{register.user.firstname}"/>
>                         </s:decorate>
>                     </div>
>                 </div>
>                 <div class="entry">
>                     <div class="label">#{messages['Lastname']}:</div>
>                     <div class="input">
>                         <s:decorate>
>                             <h:inputText size="32" required="true"
>                                          value="#{register.user.lastname}"/>
>                         </s:decorate>
>                     </div>
>                 </div>
>                 <div class="entry">
>                     <div class="label">#{messages['Email']}:</div>
>                     <div class="input">
>                         <s:decorate>
>                             <h:inputText size="32" required="true"
>                                          value="#{register.user.email}"/>
>                         </s:decorate>
>                     </div>
>                 </div>
>                 <div class="entry">
>                     <div class="label">&#160;</div>
>                     <div class="input">
>                         <h:commandButton value="#{messages['PrevPage']}" styleClass="button"
>                                          action="register"/>
>                         <h:commandButton value="#{messages['NextPage']}" styleClass="button"
>                                          action="#{register.enterProfile}"/>
>                     </div>
>                 </div>
>             </s:validateAll>
>             </h:form>

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