JSF Output not coming as expected by using commandLink, ViewScope in dataTable

Question

Below are the files I have.

manageStaff.xhtml

<h:dataTable var="c" value="#{newStaffMemberServiceBean.newStaffMemberDataBeanList}"
             styleClass="order-table"
             headerClass="order-table-header"
             rowClasses="order-table-odd-row,order-table-even-row"
             border="1" id="staffListDataTable" width="100%">

    <h:column>
        <f:facet name="header">
            Staff Member Name
    </f:facet>
        <h:form>
            <h:commandLink action="viewStaffMemberProfileData" value="#{c.firstName}">
                <f:setPropertyActionListener target="#{newStaffMemberServiceBean.userId}" value="XXXYYYZZZZ"/>
            </h:commandLink>
        </h:form>
    </h:column>
</h:dataTable>

viewStaffMemberProfileData.xhtml

 My Name is -<h:outputText value="#{newStaffMemberServiceBean.userId}" />-

NewStaffMemberServiceBean.java

@ManagedBean(name = "newStaffMemberServiceBean")
//@RequestScoped
@ViewScoped
//@SessionScoped
public class NewStaffMemberServiceBean {

    private String userId;

    public String getUserId() {
        return userId;
    }

    public void setUserId(String userId) {
        this.userId = userId;
    }

In output what I get is in below format

Staff Member Name
++++++++++++++++++

Name 1
Name 2
Name 3
.
.
.
.

On Clicking Name 1, I get re-directed to viewStaffMemberProfileData.xhtml.

BUT problems are

To get re-directed on viewStaffMemberProfileData.xhtml page, I have to click link (Name 1, Name 2, etc) twice :(
When I get re-directed to viewStaffMemberProfileData.xhtml I only see output as

My Name is --

What I want is My Name is -XXXYYYZZZZ-.

Suggest me where I am going wrong.

NOTE

I have all beans in ViewScope.

Update 1

@prajeeshkumar

Getter setter are as below

    public List<NewStaffMemberDataBean> getNewStaffMemberDataBeanList() {
    return newStaffMemberDataBeanList;
    }

    public void setNewStaffMemberDataBeanList(List<NewStaffMemberDataBean> newStaffMemberDataBeanList) {
    this.newStaffMemberDataBeanList = newStaffMemberDataBeanList;
    }

The same question again ? http://stackoverflow.com/questions/9653078/hcommandlink-not-working-inside-datatable/9653541 — prajeesh kumar, Mar 12 '12 at 08:36
what is the getter/setter for the property `newStaffMemberDataBeanList` ? — prajeesh kumar, Mar 12 '12 at 08:38
@prajeeshkumar : ***READ AGAIN*** They are NOT same question. Look at the two problems that I listed. Now I am able to get re-directed to new page by using `ViewScope`. — Fahim Parkar, Mar 12 '12 at 08:44
It would help if you edit your question to more adequately indicate the differences with your previous question. — Tim Post, Mar 12 '12 at 09:58
@TimPost : In earlier question, h:commandLink was not working. In this question it is working but (1) I have to click twice to get re-directed to another page (2) & output is not coming as expected .. Problem 1 is solved and I am still looking into second question. — Fahim Parkar, Mar 12 '12 at 10:03

Daniel · Accepted Answer · 2012-03-12T08:28:25.520

2

The reason for this behavior is the view scope of the newStaffMemberServiceBean , its being destroyed and created again... so the value is being nullified... here an alternative solution:

haven't tried this one, But worth trying

change

<h:commandLink action="viewStaffMemberProfileData" value="#{c.firstName}">
     <f:setPropertyActionListener target="#{newStaffMemberServiceBean.userId}" value="XXXYYYZZZZ"/>
</h:commandLink>

into

<h:link value="#{c.firstName}" outcome="nameOfXhtmlGoesHere">
     <f:param name="id" value="XXXYYYZZZZ" />
</h:link>

and in viewStaffMemberProfileData.xhtml

add this before the <h:head>

<f:metadata>
    <f:viewParam name="id" value="#{newStaffMemberServiceBean.userId}" />
</f:metadata>

you can also add <f:event type="preRenderView" listener="#{newStaffMemberServiceBean.init}" /> to the f:metadata in order to do some init...

based on this BalusC great article - Communication in JSF 2.0

OR

you can turn the scope of newStaffMemberServiceBean into SessionScope...

edited Mar 12 '12 at 08:28

answered Mar 12 '12 at 07:14

Daniel

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this is working ***BUT*** I am getting `?id=XXXYYYZZZZ` in URL which is ***BAD*** :( Any OTHER solution? – Fahim Parkar Mar 12 '12 at 07:38
Also any idea why on first click same page is shown & on second click the page get re-directed to the page requested?? – Fahim Parkar Mar 12 '12 at 08:24
I think I will have to use `Flash flash = FacesContext.getCurrentInstance().getExternalContext().getFlash();` here. Your thoughts on it?? – Fahim Parkar Mar 12 '12 at 08:32
haven't worked with Flash , but... http://mkblog.exadel.com/2010/07/learning-jsf2-using-flash-scope/ looks like a good place to start – Daniel Mar 12 '12 at 08:38

score 0 · Answer 2 · answered Mar 12 '12 at 09:24

0

If you have newStaffMemberServiceBean in view scope, then when you are going to a different page (view) will that bean be available in that scope ? I mean manageStaff.xhtml will have one instance and viewStaffMemberProfileData.xhtml will have another one. Your solution here will be using the session scope or using the h:link or h:outputLink

answered Mar 12 '12 at 09:24

prajeesh kumar

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why to bring id in session scope what it will be for one request only? – Fahim Parkar Mar 12 '12 at 09:59