Hello,
Can PPR be used to change an attribute of a component based on a value change
for another?
A simple case is when at least one of two fields must be filled in. After
supplying a value for one it would be nice to set required="false" for the
other. I've attempted to do this with a backing bean with bound components for
both af:inputText instances. The JSF components are each set up thusly:
<af:inputText label="Required Field A"
value="#{valueBean.reqFieldA}"
id="reqFieldA"
partialTriggers="reqFieldB"
required="#{componentBean.reqFieldARequired}"
autoSubmit="true"
immediate="true"
binding="#{componentBean.reqFieldAComponent}"
valueChangeListener="#{componentBean.processValueChange}" />
Filling in a value and tabbing out tries to do the right thing: my
ValueChangeListener is called, I see the new value, and I twiddle the required
attribute on the reqFieldB component as well as setting the reqFieldBRequired
property on the backing bean. However, the input for reqFieldB is still
required on the page after the partial update and I see this in the log:
16:38:09,471 INFO [STDOUT] Jun 29, 2006 4:38:09 PM
org.apache.myfaces.adfinternal.renderkit.core.ppr.PPRResponseWriter$PPRTag
finish
WARNING: No PPR-capable id found for elements of
CoreInputText[UIXEditableFacesBeanImpl, id=reqFieldB]. This component has not
written-out an id attribute.
Reloading the page at this point does mark reqFieldB as optional, but moves it
before reqFieldA.
I feel that I'm either close to getting something working or being an idiot.
Pointers would be much appreciated either way!
Many thanks,
Keith
