CODEWITHSUNDEEP
jsf
user1799537
user1799537

Reputation:

Update object in bean without reload

On my page i have form with data from database. I want to implement, as default behaviour, writing all changes to db.
I found such example

<h:selectOneMenu value="#{bean.options}" onchange="submit()"
                        var="#{bean.options}" valueChangeListener="#{bean.changeListernMethod}">
                        <f:selectItem itemValue="1" itemLabel="option1" />
                        <f:selectItem itemValue="2" itemLabel="option2" />
                        <f:selectItem itemValue="3" itemLabel="option3" />
                    </h:selectOneMenu>

but it not call listener method and reload all page. I can't reload page on every inputText edit or menu selection change. Do you have idea how to achieve such behaviour? Update objects in bean without page reload.

Upvotes: 1

Views: 1956

Answers (1)

onderbewustzijn
onderbewustzijn

Reputation: 965

<f:ajax listener="#{bean.changeListernMethod}" render="@form" event="valueChange"/>

This is how you implement partial submit, or in your words: update objects in bean without page reload. The line I typed will fire ajax and update (only) the form whenever a value is selected and is different from the previous selected.

For more info:

https://docs.oracle.com/javaee/6/javaserverfaces/2.1/docs/vdldocs/facelets/f/ajax.html

Upvotes: 2

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