JSF composite component validation

Question

I want to create composite component and attach some validators to it's children, but I want message from validation to be attached to composite component, not to it's child.

In the page using the composite component I want something like this:

<zzz:mycomponent id="my" />
<h:message for="my" />

Now it doesn't work, because message is for component's child, not composite component itself. How to make it for whole component?

Or even better, I would like to add validator to composite component, like:

<zzz:mycomponent id="my" validator="#{bean.validateComposite}" />

And receiver something like booleans array as value, because inside composite component there are h:selectBooleanCheckbox elements. Is that possible?

score 1 · Answer 1 · answered Dec 09 '11 at 13:36

Maybe very late to respond on this question but this is how I should do it:

<zzz:mycomponent id="my">
   <f:event type="postValidate" listener="#{bean.doValidation}"/>
</zzz:mycomponent>

The doValidation is then called after the validation of the childs in the 'container'. The method llooks like this:

public void doValidation(ComponentSystemEvent event) {
    ...
}

And you have 2 options in that method:

Access the child components (event.getComponent().getChildren() ) and do whatever you want to do with the values submitted on those childs.
Or loop over the FacesMessages and reallocate the clientId so that they are placed on your container component (id = my)

score 1 · Answer 2 · edited Aug 22 '12 at 12:20

You have to put the next code inside your composite definition

      <cc:interface>
          .....
          <cc:editableValueHolder name="attName" targets="Idcomponent" /><!--It allows to acces to the composite-->
          <cc:facet name="textMessage"/>                                 <!--Define the Facet-->
      </cc:interface>
      <cc:implementation id="#{cc.attrs.id}" >
          ......
          <h:inputText id="Idcomponent" value="#{cc.attrs.value}" required="#{cc.attrs.required}"/>
          <cc:renderFacet name="textMessage"/>
      </cc:implementation>

You can use in the JSF page

      <zzz:textBox id="txbTest" label="#{}" value="#{}" >
           <f:validateLongRange for="attName" minimum="-10" maximum="10"/>
           <f:facet name="textMessage">
                <h:message for="value" style="color: blue"/>
            </f:facet>
      </zzz:textBox>

Or another option could be :

      <zzz:textBox id="txbTest" label="#{}" value="#{}" validator="#{bean.yourValidateMethod}" >
           <f:facet name="textMessage">
                <h:message for="value" style="color: blue"/>
            </f:facet>
      </zzz:textBox>

JSF composite component validation

2 Answers2