Question

I have a bean validation according to:

@Min(value = 0)
@Max(value = 1000000)    
private int kilometres;

In my facelet I have:

<p:messages autoUpdate="true" showDetail="true" showSummary="true" />

<p:outputLabel for="kilometres" value="Kilometres" />
<p:inputText id="kilometres" value="#{bean.vehicle.kilometres}">
     <p:ajax event="change" />
</p:inputText>

When i have this it works fine, except that all messages for all field ids will be shown. I would like to specify for each field, like this:

<p:messages for="kilometres" autoUpdate="true" showDetail="true" showSummary="true" />

However, when I add the for=”kilometres” option, then no validation messages is shown. Have I missed something or is it a bug?

Best regards

Answer 1

Use the <p:message/> component to show validation messages for each input component separately:

<p:outputLabel for="kilometres" value="Kilometres" />
<p:inputText id="kilometres" value="#{bean.vehicle.kilometres}">
    <p:ajax/>
</p:inputText>
<p:message for="kilometres"/>

Showcase: AJAX – Validations

UPDATE

In order to show multiple message for a given component (with p:messages) you need to specify the relevant component ID in for="kilometres" and in your backing bean too:

FacesContext context = FacesContext.getCurrentInstance();

context.addMessage("kilometres", new FacesMessage("Message 1"));
context.addMessage("kilometres", new FacesMessage("Message 2"));