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<?php |
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declare(strict_types=1); |
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namespace Umbrellio\LTree\Collections; |
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use Illuminate\Database\Eloquent\Collection; |
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use Illuminate\Database\Eloquent\Model; |
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use Umbrellio\LTree\Helpers\LTreeBuilder; |
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use Umbrellio\LTree\Helpers\LTreeNode; |
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use Umbrellio\LTree\Interfaces\HasLTreeRelations; |
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use Umbrellio\LTree\Interfaces\LTreeInterface; |
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use Umbrellio\LTree\Interfaces\ModelInterface; |
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use Umbrellio\LTree\Traits\LTreeModelTrait; |
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/** |
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* @method LTreeInterface|ModelInterface first() |
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* @property LTreeInterface[]|ModelInterface[]|HasLTreeRelations[] $items |
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*/ |
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class LTreeCollection extends Collection |
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{ |
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private $withLeaves = true; |
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public function toTree(bool $usingSort = true, bool $loadMissing = true): LTreeNode |
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{ |
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if (!$model = $this->first()) { |
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return new LTreeNode(); |
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} |
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if ($loadMissing) { |
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$this->loadMissingNodes($model); |
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} |
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if (!$this->withLeaves) { |
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$this->excludeLeaves(); |
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} |
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$builder = new LTreeBuilder( |
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$model->getLtreePathColumn(), |
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$model->getKeyName(), |
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$model->getLtreeParentColumn() |
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); |
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return $builder->build($collection ?? $this, $usingSort); |
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} |
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public function withLeaves(bool $state = true): self |
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{ |
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$this->withLeaves = $state; |
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return $this; |
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} |
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private function loadMissingNodes($model): self |
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{ |
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if ($this->hasMissingNodes($model)) { |
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$this->appendAncestors($model); |
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} |
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return $this; |
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} |
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private function excludeLeaves(): void |
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{ |
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foreach ($this->items as $key => $item) { |
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/** @var LTreeModelTrait $item */ |
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if ($item->ltreeChildren->isEmpty()) { |
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$this->forget($key); |
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} |
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} |
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} |
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/** |
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* @param LTreeInterface|ModelInterface $model |
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*/ |
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private function hasMissingNodes($model): bool |
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{ |
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$paths = collect(); |
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foreach ($this->items as $item) { |
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$paths = $paths->merge($item->getLtreePath()); |
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} |
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return $paths |
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->unique() |
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->diff($this->pluck($model->getKeyName())) |
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->isNotEmpty(); |
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} |
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/** |
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* @param LTreeInterface|ModelInterface $model |
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*/ |
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private function appendAncestors($model): void |
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{ |
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$paths = $this |
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->pluck($model->getLtreePathColumn()) |
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->toArray(); |
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$ids = $this |
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->pluck($model->getKeyName()) |
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->toArray(); |
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/** @var Model $model */ |
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$parents = $model::parentsOf($paths) |
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->whereKeyNot($ids) |
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->get(); |
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foreach ($parents as $item) { |
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$this->add($item); |
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} |
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} |
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} |
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umbrellio /
laravel-ltree
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