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<?php
namespace Webfactor\Laravel\Backpack\NestedModels\Traits;
use Kalnoy\Nestedset\Collection;
use Kalnoy\Nestedset\NodeTrait;
trait NestedModelTrait
{
use NodeTrait;
/**
* Build the collection representing the tree with possibly many root nodes
*
* @param Collection|null $nodes
* @return Collection
*/
public static function loadTree(Collection $nodes = null)
$nodes = $nodes ?? static::all();
return $nodes->where((new static)->getParentIdName(), null)
->values()
->each(function ($item) use ($nodes) {
$nodes->toTree($item);
});
}
/*
|--------------------------------------------------------------------------
| Kalnoy/NestedSet
|
| Overwrite the default tree columns here to fit with backpack reorder
public function getLftName()
return 'lft';
public function getRgtName()
return 'rgt';
public function getParentIdName()
return 'parent_id';
webfactor /
laravel-backpack-nestedmodels
