kidwon kidwon - 3 months ago 14
Ajax Question

Send additional parameter to ajax request

I am having a ajax listener who should redirect to item view page.
However since I am using generic type as model I would like to specify additionally in my common datatable controller what is the view with a second parameter.

Unfortunately one can choose between two listener approaches one using event parameter which helps identifying the object and the second one gives you the opportunity to send free param but lacks the event.

template:

<p:dataTable value="#{aObj.objList}" var="item" .... selectionMode="single">

<p:ajax event="rowSelect" listener="#{aObj.viewItem}" />
<p:ajax event="rowSelect" listener="#{aObj.viewItem('myItemView?_id=')}" />

...
</p:dataTable>


controller:

public void viewItem(SelectEvent event) {
// ...
}

public void viewItem(String viewUrl) {
// ...
}


I can add additional properties to the bean but since it is generic and providing model items doesn't feel right to pollute it.

Is there any workaround?

Answer

You could set an attribute in your data table and read it in your select listener.

XHTML:

<p:dataTable value="#{aObj.objList}" var="item" .... selectionMode="single">

  <f:attribute name="test" value="abc" />
  <p:ajax event="rowSelect" listener="#{aObj.viewItem}" />

  ...
</p:dataTable>

Listener:

public void viewItem(SelectEvent event) {
  String test = (String) event.getComponent().getAttributes().get("test");
  // ...
}