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

Complexity

Conditions	4
Paths	5

Size

Total Lines	28
Code Lines	16

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

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

        $parentKeyName = $this->first->relationLoaded('pivot')
            ? 'pivot.' . $this->first()->getParentKeyName()
            : 'pivot_' . $this->first()->getParentKeyName();
        $localKeyName = $this->first()->getLocalKeyName();
        $depthName = $this->first()->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;
    }