Comments on: Kohana ORM Tip : ORM Tree

By: Matt

Matt — Sat, 24 Jul 2010 10:59:10 +0000

Thanks very much! It was indeed at Newcastle as well by the way. Matt

By: Johnathan Au

Johnathan Au — Fri, 23 Jul 2010 15:42:22 +0000

Nice website. Was skimming through your dissertation and noticed that Jeff Yan was your supervisor. It wasn’t Jeff Yan from Newcastle by any chance? I’m studying CS there right now.

By: Peter Buchmann

Peter Buchmann — Thu, 08 Oct 2009 07:21:44 +0000

Great tutorial that was a big help to me, thanks a lot!

By: Jyskal

Jyskal — Sat, 27 Jun 2009 14:43:51 +0000

@bumperbox & Bicho44

Use protected $ORM_Tree_children instead of protected $children.

GreetZ

By: Bicho44

Bicho44 — Mon, 18 May 2009 03:25:48 +0000

Hi: i receive the same error like bumperbox, anyone have the solution?

By: bumperbox

bumperbox — Sun, 26 Apr 2009 03:01:08 +0000

i have tried a really simple example of this and can’t get it working.

do i need to have a foreign key on the table ?

this is my table
catalogues
id
parent_id
name

my model file
class Catalogue_Model extends ORM_Tree {
protected $children = “catalogues”;
}

my code
$catalogues = ORM::factory(‘catalogue’)->where(‘parent_id’, $id)->find_all();

foreach($catalogues as $cat) {
foreach ($cat->children as $subcat) {
do stuff
}

error message
Fatal error: Class ‘_Model’ not found in \system\libraries\ORM.php on line 82

By: Dexter

Dexter — Tue, 13 Jan 2009 13:20:31 +0000

How can I add categories/subcategories in table ‘categories’ using ORM or I need every time using SQL query like this:
INSERT INTO `categories` VALUES (1,’root’,0),(2,’beer’,1),(3,’meat’,1),(4,’pork’,3),(5,’beef’,3); ???

By: Matt

Matt — Sat, 18 Oct 2008 09:32:26 +0000

Hi jshaw,

I noticed shortly after your post here that Wouter helped you out with this over at the Kohana Forums, so hopefully you have managed to resolve this!

For others wanting to follow the resolution to this then check out the thread at the forums.

/Matt

By: jshaw86

jshaw86 — Thu, 16 Oct 2008 21:29:31 +0000

I’ve been trying to get this to work for a couple hours now. I had a couple questions:
1) do we still need our pivot table relationship arrays(ie has_one, has_and_belongs_to_many).
2) I don’t get the children thing, why is categories a child of Category.

My situtation is I have 3 entities:events,people,sororities, all are many-to-many relationships. So all entities are parents and children of eachother. Thanks.

By: Matt

Matt — Tue, 30 Sep 2008 21:45:34 +0000

Thanks for the comments!

Zeelot – I’ll try and get some more usage examples of this together for you, although the beauty of this is that it is a simple extension of the ORM library, so it inherits all the standard ORM features

Spirit – Off the top of my head you could always retreive the child and then recursively determine the parent until you encounter the root node

  while(true)
  {
    if($node->parent == null) break;

    $crumbs[] = $node->parent;
    $node = $node->parent;
  }

**Note the above is sudo code, but that is the basic idea, just start with your node in question and loop through its parents until you hit root

Hope that helps!

/Matt