Persisting value across VF pages in Controller

Question

I am creating a wizard using VF and I have a public variable public Id transferToUserId {get; set;} which is being set in step one.

However when I go to step two of my wizard, the variable is blank.

How can I make the value persist across my steps? Is there something I have to do in the controller, like

if (transferToUserId != null) {this.transferToUserId = transferToUserId}

Answer 1

Assuming you are getting value for transferToUserId in constructor of the first page. To persist the values across same controller, you need to use the same controller for both vf pages. At the time of redirection, you need to use setRedirect(false) which will persist all the variables values as it is.

public class RedirectDemo{
    public Id transferToUserId  {get; set;}
    public RedirectDemo(){
        transferToUserId  = Apexpages.currentpage().getparameters().get('id');
    }

    public Pagereference redirectPage2(){
        Pagereference pg = new Pagereference('/apex/Page2');
        pg.setRedirect(false);
        return pg;
    }
}