/**
* Create all of the child nodes of a root node.
*
* @param array $nodes
*/
protected function createNodes($nodes)
{
// $parent is the array of parent nodes.
$parent = [];
foreach ($nodes as $load_record) {
$match = preg_match('/^\\*+/', $load_record, $matches);
// If there is no match then we have hit a top level category.
// Add this to the $result array and reset the $parent array.
if ($match === 0) {
$node_name = trim($load_record);
$root_node = Category::create(['name' => $node_name, 'description' => $node_name]);
$parent = [0 => $root_node];
continue;
}
// If there is a match then check how many levels deep we are.
$levels = strlen($matches[0]);
// Grab the node name
$node_name = trim(substr($load_record, $levels));
// Grab the current node at the level of the parent.
/** @var Category $current */
$current = $parent[$levels - 1];
// Add this node as a child of the parent.
$child_node = $current->children()->create(['name' => $node_name]);
// Update the description, just for fun
$child_node->description = $child_node->path;
$child_node->save();
// Store this node name as a potential future parent.
$parent[$levels] = $child_node;
}
}
public function run()
{
$nodes = $this->getNodes();
// Build the above list of nodes as a heirarchical tree
// of categories.
foreach ($nodes as $node_name => $node_children) {
// Create each root node.
$root_node = Category::create(['name' => $node_name, 'description' => $node_name]);
// Create the children of the root node.
if (!empty($node_children)) {
$this->createNodes($root_node, $node_children);
}
}
}
