Question

I have some models witch are using Doctrine nestedset feature.
I want to add delete functionaly of elements from tree since that is required in my application. I was trying with snippets from documentation but I am getting a very strange error with that code.

YAML is here: http://pastie.org/820978

And I am trying with this code in my Menu class witch extends generated abstract class BaseMenu and BaseMenu extends Doctrine_Record 🙂

Anyway my code:

 public function getMenuItem($id)
 {
     return Doctrine::getTable('Menu')->find($id);
 }

 public function delete($id)
 {
     $item = $this->getMenuItem($id);

     //echo get_class($item); will return Menu so object exists !?

     $item->getNode()->delete();
 }

And I get this an error:

Fatal error: Call to a member function
getNode() on a non-object

And I just noticed that get_class($item) is trowing a warring (so that probabbly is reason for this strange behavior):

Warning: get_class() expects parameter
1 to be object, boolean given in…

However I need a solution for this and all hints are welcome…

Answer 1

getNode() returns a Doctrine_Node, not a Doctrine_Record.

A Doctrine_Record can be deleted, but a Doctrine_Node cannot be deleted — because it is not persistent anyway.

The correct logic would simply be:

$item = $this->getMenuItem($id)->delete();

Also, don’t name a method in your model ‘delete’!! This will override Doctrine_Record’s delete() method, which will drive you crazy trying to debug it.