Find a model's siblings using a relation - php

Question

This is the table for the model:
CREATE TABLE IF NOT EXISTS `SomeModel` (
`id` int NOT NULL AUTO_INCREMENT,
`parent_id` int NOT NULL
)
My goal is to be able to query a model with its siblings using:
SomeModel::model()->with('siblings')->findByPk($id);
Here is my current attempt at the relation:
public function relations()
{
return array(
'siblings' => array(self::HAS_MANY, 'SomeModel', array('parent_id'=>'parent_id')),
);
}
The problem is that I can't find a way to create a condition so that the model itself isn't returned along with it's siblings in the $model->siblings array.
Any thoughts would be great.
Thanks!

Answer 1

Change your relation to this:
'siblings'=>array(self::HAS_MANY, 'Address', array('parent_id'=>'parent_id'),'condition'=>'siblings.id!=t.id')
Edit: Some explanation, in the documentation for relation(), we can specify extra options for the join that takes place and these additional options:
Additional options may be specified as name-value pairs in the rest array elements.
Plus the default alias for the table is t hence use t.id.
Edit: from the comments:
Implementing lazy loading, the way you want it, will be tough to accomplish(I don't know how, not sure if possible either), however i can suggest making the current code better, by
using named scopes, use a scope when you are doing eager loading, and add the condition siblings.id!=t.id in the scope:
// add this function to your model, and remove the condition from the relation
public function scopes(){
return array(
'eagerSibs'=>array(
'condition'=>'siblings.id!=t.id',
),
);
}
Do eager loading with scope:
SomeModel::model()->eagerSibs()->with('siblings')->findByPk($id);
This will remove the error with lazy loading $model->siblings
Although the error of lazy loading will be removed you will still be getting the current record, to counter that you can add and use a function of the model which will load the related records without the current one, but ofcourse you won't be using $model->siblings, and instead have something like: $model->getLazySibs();
public function getLazySibs(){
$sibs=$this->siblings;
foreach ($sibs as $asib){
if ($asib->id != $this->id)
$lazySibs[]=$asib;
}
return $lazySibs;
}