Yii Framework | Nested arrays in same table - php

Question

Using CActiveRecord my table looks like this:
A column parent_id has relation many to id, and it works properly.
id | parent_id
---+----------
1 1 <- top
2 1 <- means parent_id with 1 has parent with id=1
3 1
4 2 <- parent for is id=2
5 2
6 2 and so many nested levels....
A goal is how to properly get nested as PHP classically way nested arrays data (arrays inside arrays).
array(1,1) {
array(2,1) {
array(4,2) ....
}
}
Problem is Yii. I didn't find properly way how to pick up a data as nested array using properly CActiveRecord.
What is best way to make nested array results? A main goal is to easy forward to render view so I don't separate with too many functions and calling many models outside from modules or models.
A good is one function to get a result.

Answer 1

Solved using this: Recursive function to generate multidimensional array from database result
You need get a data as arrays from model:
$somemodel = MyModel::model()->findAll();
Then put all in array rather then Yii objects model or what you need:
foreach ($somemodel as $k => $v)
{
$arrays[$k] = array('id' => $v->id, 'parent_id' => $v->parent_id, 'somedata' => 'Your data');
}
Then call a function:
function buildTree(array $elements, $parentId = 0) {
$branch = array();
foreach ($elements as $element) {
if ($element['parent_id'] == $parentId) {
$children = buildTree($elements, $element['id']);
if ($children) {
$element['children'] = $children;
}
$branch[] = $element;
}
}
return $branch;
}
Then call put all $arrays data into buildTree function to rebuild nesting arrays data.
$tree = buildTree($arrays);
Now your $tree is nested arrays data.
Note: there aren't depth into function but in convient way you can add using like this sample: Create nested list from Multidimensional Array