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How to capture the clicked row number in a p:dataTable from the backer bean?

Posted on 2014-04-07
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Last Modified: 2014-04-09
I have tried this, But I do not get the value printed. Instead an exception. Can someone help?

<p:dataTable id="theTable"  var="theTableIterator"
    value="#{theBean.jobList}"
    selection="#{theBean.selectedRow}"
    rowIndexVar="rowIndex"
    widgetVar="datatableVar" >

    <p:column>
          <p:commandLink value="#{theTableIterator.jobName}"
                        style="#{theBean.styleString}"
                        update="theTable"
                       actionListener="#{theBean.goToClickedLink()}"
    />
   </p:column>  
        
        <p:column>
          <p:outputLabel value="#{theTableIterator.jobDescription}"
style="#{theBean.styleString}" />


public void goToClickedLink()
{      
   try {
      FacesContext context = FacesContext.getCurrentInstance();
      DataTable dt = (DataTable)
                  FacesContext.getCurrentInstance().getViewRoot().findComponent("theTable");
      
               System.out.println("Row Index : " + dt.getRowIndex());
        }
        catch (Exception e) {
                         
        }
            
      }
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Comment
Question by:prain
  • 2
3 Comments
 
LVL 36

Accepted Solution

by:
mccarl earned 1000 total points
ID: 39987701
Again, I don't know too much about JSF/Primefaces but since no one else has commented with a solution, I'll give what I think *MAY* work...

Try this, in your p:commandLink can you pass variables as arguments, where "rowIndex" is what you defined in your p:dataTable as the rowIndexVar, ie...
          <p:commandLink value="#{theTableIterator.jobName}"
                        style="#{theBean.styleString}"
                        update="theTable"
                       actionListener="#{theBean.goToClickedLink(rowIndex)}"  />

Open in new window

And then in your Java code, you might be able to define the ActionListener to accept that variable...
public void goToClickedLink(int rowIndex)
{
    // do something with "rowIndex"
}

Open in new window

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Author Closing Comment

by:prain
ID: 39988870
You Buty. Thanks a bunch. I do not know why I did not think in that way.
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LVL 36

Expert Comment

by:mccarl
ID: 39990506
Glad it worked for you! :)
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