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up vote 3 down vote favorite

I want to display the message at another page when user click a button. Such as the user clicks button at Page A, then my action method will redirect user to Page B and show the message which is defined in the Page A controller.

Page A and Page B not use the same controller. 

String pageHeaderReferer = ApexPages.currentPage().getHeaders().get('Referer'); 
if((pageHeaderReferer != null && pageHeaderReferer.containsIgnoreCase('Page1')) || isLtIE9()) 
{    
    ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.INFO, message)); 
}

Be careful, using the above code in IE8 that there is no 'Referer' value.

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1 Answer

up vote 6 down vote accepted

The easiest way would be to pass the message as a parameter when redirecting the user, then have the second controller add that parameters content to the page.

Controller 1

public PageReference GoToPage2()
{
  ApexPages.PageReference pr = new ApexPages.PageReference(Page.Page2);
  pr.SetRedirect(true);
  pr.GetParameters().Put('message', 'Hello, World!');
  return pr;
}

Page 1

<apex:commandButton action="{!GoToPage2}" value="Page 2!"/>

Controller 2

public void Init()
{
  String message = '' + ApexPages.CurrentPage().GetParameters().Get('message');
  String pageHeaderReferer = ApexPages.currentPage().getHeaders().get('Referer'); 

  // Use the referrer parameter to only show the message when coming from Page 1
  if(pageHeaderReferer != null && pageHeaderReferer.containsIgnoreCase('Page1') && message != 'null')
  {
    ApexPages.CurrentPage().AddMessage(new ApexPages.Message(ApexPages.Severity.Info, message));
  }
}

Page 2

<apex:page controller="Page2Controller" action="{!Init}">
  <apex:pageMessages/>

The exact message syntax might be a little off, will double check it. It's one of those things I can remember when I'm coding but not when I'm just writing in the browser!

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+1 .Was drafting same and then just saw this :) –  Mohith Kumar Jun 30 at 3:47
 
Thanks, but I think this will add a new parameter in the URL, if the user refresh the Page 2, the message will display again. I just want the message to display only one time. –  Jair Jun 30 at 4:15
 
You can always clear the parameter after reading it. An alternative mechanism would be writing it to a temporary object or custom setting (the latter might be better). –  LaceySnr♦ Jul 1 at 0:11
 
String pageHeaderReferer = ApexPages.currentPage().getHeaders().get('Referer'); if(pageHeaderReferer != null && pageHeaderReferer.containsIgnoreCase('Page1')) { ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.INFO, message)); } –  Jair Jul 2 at 6:22

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