Category Hierarchy with Selected and Disable Mode (PHP-MySQL) - php

Question

I use this code to make dropdown list like this, support selected parent when update mode
Current category dropdown (select category 1.1 a child of category 1)
public static function dropdown($parent, $child = null) {
static $level = 0;
static $return = '';
$search = self::all(array('parent' => $parent, 'status' => 1));
foreach ($search as $data) {
$level--;
$space = '';
for($i = 1; $i < ($level*-1); $i++) $space .= ' ';
if ($child == $data->id) $selected = 'selected';
else $selected = '';
$return .= '<option value="'.$data->id.'" '.$selected.'>'.$space.'- '.$data->name.'</option>';
self::dropdown($data->id, $child);
$level++;
}
return $return;
}
Problem : How to disable all child of category 1.1 and him self when i update category 1.1 ??
Goal screenshot :

Answer 1

try this :
public static function dropdown($parent, $child = null, $isSelected=false) {
static $level = 0;
static $return = '';
$search = self::all(array('parent' => $parent, 'status' => 1));
foreach ($search as $data) {
$level--;
$space = '';
for($i = 1; $i < ($level*-1); $i++) $space .= ' ';
if ($child == $data->id || $isSelected){
$selected = 'selected';
$isSelected = true;
}else{
$selected = '';
}
$return .= '<option value="'.$data->id.'" '.$selected.'>'.$space.'- '.$data->name.'</option>';
self::dropdown($data->id, $child, $isSelected);
$level++;
}
return $return;
}
Basically you have to transfer the status (selected or not) of the current node, and transfers it to his childs.