JSF checkbox value not sent to bean
Question
While the view can get all values from the bean, when a checkbox ( h:selectBooleanCheckbox ) is toggled the bean is not updated. The setSelected() method in Item is never called from the view.
I've tried changing the scope of the bean to application, using a map instead of a value for the selected property and a foolish attempt at writing my own ajax javascript function.
The application I'm working with is a bit legacy so I'm using Tomcat 6, JSF 1.2 and Richfaces 3.3.3.Final.
It seems like it should be simple, I think I'm missing something obvious, but I've been at this for two days and can't figure out why the bean isn't updated.
My view is:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:c="http://java.sun.com/jstl/core"
xmlns:fn="http://java.sun.com/jsp/jstl/functions"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<head>
<title>JSF</title>
</head>
<body>
<h:form id="tableForm">
<rich:dataTable id="table" value="#{managedBean}" var="item" width="100%">
<rich:column label="Select" align="center" width="40px" >
<f:facet name="header">
<h:outputText value="Select" />
</f:facet>
<h:selectBooleanCheckbox value="#{item.selected}" >
<a4j:support execute="@this" event="onclick" ajaxSingle="true"/>
</h:selectBooleanCheckbox>
</rich:column>
<rich:column label="Name" align="center" width="40px">
<f:facet name="header">
<h:outputText value="Name" />
</f:facet>
<h:outputText value="#{item.name}" />
</rich:column>
</rich:dataTable>
</h:form>
</body>
</html>
I have a managed bean ItemBean in session scope:
import org.richfaces.model.ExtendedTableDataModel;
public class ItemBean extends ExtendedTableDataModel<Item>{
public ItemBean() {super(new ItemProvider());}
}
ItemProvider is:
import org.richfaces.model.DataProvider;
public class ItemProvider implements DataProvider<Item>{
private List<Item> items = new ArrayList<Item>();
public ItemProvider(){
for(int i = 0; i < 10; i++){
items.add(new Item(i, "Item "+i));
}
}
public Item getItemByKey(Object key) {return items.get((Integer)key);}
public List<Item> getItemsByRange(int fromIndex, int toIndex) {
return new ArrayList<Item>(items.subList(fromIndex, toIndex));
}
public Object getKey(Item arg0) {return arg0.getId();}
public int getRowCount() {return items.size();}
}
and Items are:
public class Item {
private final int id;
private final String name;
private boolean selected;
public Item(int id, String name) {
this.id = id;
this.name = name;
selected = false;
}
public int getId(){
return id;
}
public String getName(){
return name;
}
public boolean isSelected(){
return selected;
}
public void setSelected(boolean selected){
this.selected = selected;
}
}
2 answers
solution1
1 2017-06-02 17:41:00
I would assume, that your vanilla html , head and body tags might cause this.
Ajax-stuff (javascript) sometimes has to go into the <head> section of the page (along with required script references). Because JSF is working with components, it needs to insert the javascript required for a certain component at the time the component is added to the underlaying Object-Model.
Therefore JSF itself needs to manage the html , head and body tags.
So, instead of creating them as vanilla-html, use the proper <h:html> , <h:body> and <h:head> tags, which will handover this task to JSF. This way, the required javascript code for your onclick-event handler should be generated and the checkbox should work as expected.
solution2
0 ACCPTED 2017-06-13 11:47:52
The issue was that I hadn't set up my web.xml properly.
I was missing the following which routes the request to richfaces:
<filter>
<display-name>RichFaces Filter</display-name>
<filter-name>richfaces</filter-name>
<filter-class>org.ajax4jsf.Filter</filter-class>
</filter>
<filter-mapping>
<filter-name>richfaces</filter-name>
<servlet-name>Faces Servlet</servlet-name>
<dispatcher>REQUEST</dispatcher>
<dispatcher>FORWARD</dispatcher>
<dispatcher>INCLUDE</dispatcher>
</filter-mapping>
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