Hi,
I'm new to JSF. I have a basic example with JSF h:datatable which displays data. When I click on the table row new page is opened and an argument s passed via the http header:
Datatable:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<head>
<title>test</title>
<script type="text/javascript">
function addOnclickToDatatableRows() {
//gets all the generated rows in the html table
var trs = document.getElementById('myForm:dataTable').getElementsByTagName('tbody')[0]
.getElementsByTagName('tr');
//on every row, add onclick function (this is what you're looking for)
for (var i = 0; trs.length > i; i++) {
trs.onclick = new Function("rowOnclick(this)");
}
}
function rowOnclick(tr) {
// var childNodes = tr.childNodes;
// for(var i = 0; childNodes.length > i; i++) {
//
// }
var elements = tr.cells[0].childNodes;
for(var i = 0; elements.length > i; i++) {
if ((typeof elements[i].id !== "undefined") &&
(elements[i].id.indexOf("lnkHidden") > -1)) {
//opne in a new window// window.open(elements[i].href);
location.href=elements[i].href
break;
}
}
return false;
}
</script>
</head>
<body onload="addOnclickToDatatableRows();">
<h:form id="myForm">
<h1>Click on table row example</h1>
<h:dataTable id="dataTable" var="data" value="#{datatableBean.lstData}" border="1">
<h:column>
<f:facet name="header">
<h:outputText value="ID" />
</f:facet>
<h:outputText value="#{data.id}" />
<h:outputLink id="lnkHidden" value="AnotherPage.xhtml"
style="display:none">
<f:param name="id" value="#{data.id}" />
</h:outputLink>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="Value1" />
</f:facet>
<h:outputText value="#{data.value}" />
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="Value2" />
</f:facet>
<h:outputText value="#{data.value}" />
</h:column>
</h:dataTable>
</h:form>
</body>
</html>
Managed bean:
package edu.home;
import edu.home.model.Data;
import java.util.ArrayList;
import java.util.List;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
@ManagedBean
@ViewScoped
public class DatatableBean {
private List<Data> lstData;
/**
* Creates a new instance of datatableBean
*/
public DatatableBean() {
lstData = new ArrayList<Data>();
lstData.add(new Data(1, "Hello World"));
lstData.add(new Data(2, "Hello 123"));
lstData.add(new Data(3, "Hello abv"));
lstData.add(new Data(4, "Hello qaz"));
}
/**
* @return the lstData
*/
public List<Data> getLstData() {
return lstData;
}
/**
* @param lstData the lstData to set
*/
public void setLstData(List<Data> lstData) {
this.lstData = lstData;
}
}
The Java object:
package edu.home.model;
public class Data {
private int id;
private String value;
public Data(int id, String value) {
this.id = id;
this.value = value;
}
/**
* @return the id
*/
public int getId() {
return id;
}
/**
* @param id the id to set
*/
public void setId(int id) {
this.id = id;
}
/**
* @return the value
*/
public String getValue() {
return value;
}
/**
* @param value the value to set
*/
public void setValue(String value) {
this.value = value;
}
}
The page which is opened after the row is clicked:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html">
<head>
<title>TODO supply a title</title>
</head>
<body>
<h1>This is another page</h1>
<h:panelGrid columns="2">
<h:outputText value="Selected ID" />
<h:outputText value="#{anotherPageBean.id}" />
</h:panelGrid>
</body>
</html>
The managed bean of the opened page:
package edu.home;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
import javax.faces.context.FacesContext;
@ManagedBean
@RequestScoped
public class AnotherPageBean {
private int id;
/**
* Creates a new instance of AnotherPageBean
*/
public AnotherPageBean() {
try {
this.id = Integer.parseInt((String)FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("id"));
}
catch (Exception e) {
this.id = 0;
}
}
/**
* @return the id
*/
public int getId() {
return id;
}
/**
* @param id the id to set
*/
public void setId(int id) {
this.id = id;
}
}
My question is how I can pass the argument into the background, without using the http header? Can you help me to implement this example?
Best Wishes
Peter
Edited by: 932633 on May 7, 2012 3:18 PM
Edited by: 932633 on May 7, 2012 3:18 PM