That's because there's no check to see if there are children of the page or not, before creating the children.

Your code should probably look something like this instead:

function onAfterWrite() {
	if(!$this->Children()) {
		$cp = new ProgramPage(); 
		$cp->ParentID = $this->ID; 
		$cp->Title = "Test Page";
		$cp->write(); 
	}
	return parent::onAfterWrite(); 
}

Hmmm... something seems to be wrong...

I'm using SS2.3.0 and added Persons.php and FormContact.php to mysite/code.
In Persons.php I added

class Persons_Controller extends Page_Controller {

function onAfterWrite() {
   if(!$this->Children()) {
      $cp = new FormContact();
      $cp->ParentID = $this->ID;
      $cp->Title = "Contactform";
      $cp->write();
   }
   return parent::onAfterWrite();
}

}

Next I did run a db/build just to be sure.

After that I logged in to the CMS and choose Persons in the pagetype-dropdown and clicked Go.
However, only a persons-page is created, without any contactform-subpage.
I also tried it without if(!$this->Children()){}, but with no luck either.

Am I making a mistake or am I expecting the wrong behaviour of onAfterWrite() and should I do something else to accomplish this?

Hi Alien

The onAfterWrite() function has to go in your model class, not your controller :)

class ProgramHolder extends SiteTree {
   static $db = array(
   );
   static $has_one = array(
   );

   static $allowed_children = array('ProgramPage');
 
   function onAfterWrite() {
      if(!$this->Children()) {  
       
      $cp = new ProgramPage();
      $cp->ParentID = $this->ID;
      $cp->Title = "New day";
      $cp->write();
 
     } 
    return $this->onAfterWrite(); 
   }
   
   
}

dosn't create any page, GO button dosen't work

you need to return parent::onAfterWrite(); not $this->onAfterWrite();

now i have the same problem like theAlien, only pageholder is created without subpage

Hi Snaip

For some reason $this->children() is returning true even when there are no children. So I added a count on the end and it seems to work now, so my if statement looks like this:

if(!$this->Children()->count()){

}

hope that helps :)

it works very good now :)
thanks a lot :))