[richfaces-issues] [JBoss JIRA] (RF-12071) a4j:outputPanel h:inputText render problem

[Brian Leathem (JIRA)]

    [ https://issues.jboss.org/browse/RF-12071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12678489#comment-12678489 ] 

Brian Leathem commented on RF-12071:
------------------------------------

c:if is perfectly valid JSF, it just executes at a different stage of the lifecycle.  If a component is excluded with _c:_ tag, it is omitted from the component tree, as opposed to just not being rendered.  This means they should be avoided in cases where the exclusion logic can change throughout the request lifecycle.

In fact, appropriate use of _c:_ tags can be a real performance benefit.
                
> a4j:outputPanel h:inputText render problem
> ------------------------------------------
>
>                 Key: RF-12071
>                 URL: https://issues.jboss.org/browse/RF-12071
>             Project: RichFaces
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: component-panels-layout-themes
>            Reporter: Abdullah İlhanlı
>              Labels: waiting_on_user
>
> Create dynamic screen with JSF is so hard and painfull.
> I used a4j:outputPanel so many times.
> Today i am trying to create dynamic screen based on combo selected value. When value is for example option1 it generate inputText, otherwise comboBox.
> But i face to rendered problem son many times.  Problem is on submited object value.
> My problem code like  these:
> {code}
> <h:panelGrid columns="2" id="conditionKeyGrid">
>       <h:outputLabel value="#{msg['key.type.form']}" />
>       <h:selectOneMenu value="#{conditionKeyBean.conditionKey.compType}"
>                        valueChangeListener="#{conditionKeyBean.compTypeChanged}">
>               <f:selectItems value="#{conditionKeyBean.compTypeItem}" />
>               <a4j:ajax event="change" execute="@this"
>                         render="checkableLabel,checkableField" />
>             </h:selectOneMenu>
>             <a4j:outputPanel id="checkableLabel">
>                   <h:outputLabel value="#{msg['key.caption.form']}"
>                         rendered="#{conditionKeyBean.checkable}" />
>             </a4j:outputPanel>
>             <a4j:outputPanel id="checkableField">
>                   <h:panelGrid rendered="#{conditionKeyBean.checkable}">
>                         <h:inputText value="#{conditionKeyBean.captionValue}" />
>                   </h:panelGrid>
>             </a4j:outputPanel>
> <h:panelGrid/>
> {code}
> Problem detail:
> Captionvalue is unique in database.
> When exception is throwed from back end(JPA uniquness error). I pops up error to user. Then user edit captionValue and try to resubmit. But captionValue is not change, even user changed it. When i remove  rendered="#{conditionKeyBean.checkable}" problem is solved. rendered is not working correctly i think.
> How can i solve this problem?

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