Staudenmeir\LaravelAdjacencyList\Eloquent\Graph\Collection::toTree()

Complexity

Conditions	4
Paths	5

Size

Total Lines	32
Code Lines	17

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	0	Features	0

<?php
    public function toTree(string $childrenRelation = 'children'): static
    {
        if ($this->isEmpty()) {
            return $this;
        }

        $model = $this->first();

        $parentKeyName = $model->relationLoaded('pivot')
            ? 'pivot.' . $model->getParentKeyName()
            : 'pivot_' . $model->getParentKeyName();

        $localKeyName = $model->getLocalKeyName();

        $depthName = $model->getDepthName();

        $depths = $this->pluck($depthName);

        $graph = new static(
            $this->where($depthName, $depths->min())->values()
        );

        $itemsByParentKey = $this->groupBy($parentKeyName);

        foreach ($this->items as $item) {
            $item->setRelation(
                $childrenRelation,
                $itemsByParentKey[$item->$localKeyName] ?? new static()
            );
        }

        return $graph;
    }