SelectOneMenu onchange

[frer]

Hi,

Is it possible to have an event called when the selectOneMenu component is modified.

For example for the locale selection:

            <h:form id="locale">
                <h:selectOneMenu value="#{localeSelector.localeString}" >
                    <f:selectItems value="#{localeSelector.supportedLocales}"/>
                </h:selectOneMenu>
                <h:commandButton action="#{localeSelector.select}" value="#{messages['ChangeLanguage']}"/>
            </h:form>

I would prefer not to have any commandButton but rather only a select and when you change the select the method

#{localeSelector.select}

would be called.

Is this possible? Is so how?

Thank you,

Francois

[accless]

User RichFaces 
a:support-Tag within the h:selectOneMenu-Tag.

This meets your requirements

[damianharvey.damianharvey.gmail.com]

You'll be wanting to read up on Richfaces and the a4j:support tag.

<h:form id="locale">
    <h:selectOneMenu value="#{localeSelector.localeString}" >
        <f:selectItems value="#{localeSelector.supportedLocales}"/>
        <a4j:support event="onchange" action="#{localeSelector.select}" ajaxSingle="true"/>
    </h:selectOneMenu>
</h:form>

Cheers,

Damian.

[frer]

Thank you both for your answers!

How can I integrate ajax4jsf to my seam deployment...I added the oscache-2.3.2.jar and the ajax4jsf.jar in my WEB-INF/lib but do I need to specify anything in my web.xml?

Thank you,

Francois

[dan.j.allen]

In this case Ajax4jsf might be overkill (though you could certainly use it). You can simply use the JavaScript onchange event:

onchange="submit()"

[frer]

Thanks Dan!  That's actually a better solution for me since I do not wish to use ajax4jsf anywhere else (at least for now) and I was having trouble setting up ajax4jsf...

Here is my final code snippet:

            <h:form id="locale" action="#{localeSelector.select}">
                <h:selectOneMenu value="#{localeSelector.localeString}" onchange="submit()">
                    <f:selectItems value="#{localeSelector.supportedLocales}"/>
                </h:selectOneMenu>
            </h:form>

Thanks again,

Francois

[dan.j.allen]

You shouldn't need to. Seam has a built-in filter that is automatically activated when Ajax4jsf is on the classpath. The only JAR files you need to add Ajax4jsf is:

• jboss-seam-ui.jar (this is where the filter is defined)


• richfaces-api.jar


• richfaces-impl.jar


• richfaces-ui.jar

Yes, RichFaces is Ajax4jsf. You can use Ajax4jsf alone, but its just easier to throw it all in together.

[dan.j.allen]

Make sure you have the Seam filter configured (in web.xml).

[frer]

Ok thanks, I'll try that if ever I find the need for ajax4jsf but for now your Javascript option is perfect.

Thanks again,

François