How to send the currently iterated item to h:selectBooleanCheckbox with f:ajax event=change

Question

I\'ve the below form:

Answer 1

For selectBooleanCheckbox it only reacts on the event click and the form should be posted.

so add this to the checkbox

valueChangeListener="#{mybean.myfunction}" onchange="submit();"

it should get fired !

Answer 2

First of all, the valueChangeListener is the wrong tool for the job. Use <f:ajax listener>. Second, event="change" is the wrong choice in case of checkboxes/radiobuttons because their physical value actually never changes. You should use event="click", but this is the default already, so you can just omit it.

All in all, the proper initial code should look like this:

<h:selectBooleanCheckbox value="#{item.enabled}">
    <f:ajax listener="#{bean.onchangeEnabled}" />
</h:selectBooleanCheckbox>

with

public void onchangeEnabled(AjaxBehaviorEvent event) { // Note: event argument is optional.
    // ...
}

Once fixed it like that, then you can easily make use of EL 2.2 capability to pass method arguments:

<h:selectBooleanCheckbox value="#{item.enabled}">
    <f:ajax listener="#{bean.onchangeEnabled(item)}" />
</h:selectBooleanCheckbox>

with

public void onchangeEnabled(Item item) {
    // ...
}

See also:

• When to use valueChangeListener or f:ajax listener?
• What values can I pass to the event attribute of the f:ajax tag?
• How can I pass selected row to commandLink inside dataTable?
• Understanding PrimeFaces process/update and JSF f:ajax execute/render attributes