How to pass JSF InputText value to ajax listener

Question

I want to pass value in the input box to the ajax listener. Please refer following code.

JSF :

<h:dataTable id="cleanerAttendance" value="#{bean.objMap.entrySet().toArray()}">
    <h:column> 
        <f:facet name="header">
            <div>Attendance</div>
        </f:facet>
        <div>
            <h:inputText value="entry.value">
                <f:ajax execute="@this" listener="#{bean.updateMap(entry)}"/>
            </h:inputText>
        </div>
    </h:column>
</h:dataTable>

Bean :

private Map<Obj2,Integer> objMap = new HashMap<Obj2,Integer>();

public void updateMap(Entry<Obj2,Integer> entry){
    System.out.println(entry.getValue());
    objMap.put(entry.getKey(), entry.getValue());
}

I want to update objMap when input value changed. But when I run this, updateMap method get called. But entry.getValue() print as null. Does anyone know why it is not working and correct way to do this?

I have already checked following answers and it was not worked for me.

Pass h:inputText value to f:ajax listener

How to pass parameter to f:ajax in h:inputText? f:param does not work

Possible duplicate of How to pass parameter to f:ajax in h:inputText? f:param does not work — Simon Martinelli

Xtreme Biker Xtreme Biker · Accepted Answer · 2018-04-25T12:18:46

I would do it other way. First provide a getter for the Map:

public Map<Obj2,Integer> getObjMap(){
  return objMap;
}

Then iterate over the keys and set the value based in the key you're interested in:

<h:dataTable id="cleanerAttendance" value="#{bean.objMap.keySet().toArray()}" var="obj">
    <h:column> 
        <f:facet name="header">
            <div>Attendance</div>
        </f:facet>
        <div>
            <h:inputText value="#{bean.objMap[obj]}">
                <f:ajax execute="@this" />
            </h:inputText>
        </div>
    </h:column>
</h:dataTable>

This will basically invoke the model update once each of the ajax binded event happens, no listener needed. Haven't tested it myself, so give it a try!

See also:

How to set a Map value in h:inputText

How to pass JSF InputText value to ajax listener

1 Answers