CODEWITHSUNDEEP
jsfprimefacesrenderselectonemenu
Loric
Loric

Reputation: 1708

Primefaces selectonemenu on string check null value

I want to render a panelgroup only if the value of my selectOneMenu is not null. I have this:

<h:selectOneMenu value="#{bean.myString}">
    <f:selectItem itemValue=#{null} itemLabel="None" />
    <f:selectItem itemValue="first" itemLabel="First" />
    <f:selectItem itemValue="second" itemLabel="Second" />
    <f:ajax render="panelWrap" />
</h:selectOneMenu>

<h:panelGroup id="panelWrap">
    <h:panelGroup rendered="#{bean.myString == null ? false : true}">
        // My content
    </h:panelGroup>
</h:panelGroup>

I did this a lot with objects but here I am stuck on a simple string value. Can anybody help? Thanks

Upvotes: 0

Views: 11171

Answers (1)

Andy
Andy

Reputation: 6568

On your first <f:selectItem> change itemValue=#{null} to itemValue="#{null}". In your second panelGroup change the rendered condition to "#{not empty bean.myString}". You might find this link helpful.

Evaluate empty or null JSTL c tags

Upvotes: 2

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