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<?php |
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namespace Anfischer\Cloner; |
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use Illuminate\Database\Eloquent\Model; |
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use Illuminate\Database\Eloquent\Relations\Pivot; |
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use Illuminate\Support\Arr; |
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use Illuminate\Support\Collection; |
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class CloneService implements CloneServiceInterface |
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{ |
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protected $originalKeyToClonedKeyMap; |
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public function __construct() |
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{ |
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$this->originalKeyToClonedKeyMap = new Collection(); |
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} |
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/** |
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* Clones a model and its relationships |
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* |
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* @param Model $model |
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* @return Model |
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*/ |
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public function clone(Model $model) : Model |
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{ |
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return $this->cloneRecursive( |
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$this->getFreshInstance($model) |
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)->first(); |
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} |
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/** |
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* Recursively clones a model and its relationships |
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* |
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* @param $model |
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* @return mixed |
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*/ |
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private function cloneRecursive($model) |
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{ |
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Collection::wrap($model)->each(function ($item) { |
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Collection::wrap($item->getRelations())->each(function ($method, $relation) use ($item) { |
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$collection = $this->getFreshInstance($this->cloneRecursive($method), $item); |
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$item->setRelation( |
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$relation, |
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$this->getItemOrCollection($collection) |
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); |
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}); |
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}); |
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return $model; |
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} |
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/** |
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* Gets the first item of the collection if the collection |
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* only contains one item, otherwise it returns the collection |
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* |
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* @param Collection $collection |
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* @return Collection|mixed |
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*/ |
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private function getItemOrCollection(Collection $collection) |
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{ |
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return $collection->count() > 1 ? $collection : $collection->first(); |
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} |
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/** |
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* Gets a fresh cloned instance of the model |
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* which is stripped of the original models unique attributes |
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* |
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* @param object $model |
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* @param object $parent |
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* @return Collection |
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*/ |
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private function getFreshInstance($model, $parent = null) : Collection |
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{ |
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return Collection::wrap($model)->map(function ($original) use ($parent) { |
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return tap(new $original, function ($instance) use ($original, $parent) { |
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// Ensure we can get hold of the new ID relative to the original |
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$instance->saved(function () use ($original, $instance) { |
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$this->pushToKeyMap($original, $instance); |
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}); |
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$filter = [ |
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$original->getForeignKey(), |
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$original->getKeyName(), |
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$original->getCreatedAtColumn(), |
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$original->getUpdatedAtColumn(), |
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]; |
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if ($parent && ! is_a($instance, Pivot::class)) { |
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array_push($filter, $parent->getForeignKey()); |
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} |
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$attributes = Arr::except( |
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$original->getAttributes(), |
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$filter |
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); |
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$instance->setRawAttributes($attributes); |
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$instance->setRelations($original->getRelations()); |
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}); |
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}); |
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} |
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/** |
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* Get the key map Collection. |
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* |
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* @return Collection |
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*/ |
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public function getKeyMap(): Collection |
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{ |
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return $this->originalKeyToClonedKeyMap; |
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} |
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/** |
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* Add an old to new object key to the map. |
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* |
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* @param Model $original The original model. |
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* @param Model $cloned The model cloned from the original. |
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* @return void |
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*/ |
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public function pushToKeyMap(Model $original, Model $cloned): void |
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{ |
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$class = get_class($original); |
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$this->originalKeyToClonedKeyMap->get($class, function () use ($class) { |
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return tap(new Collection, function ($collection) use ($class) { |
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$this->originalKeyToClonedKeyMap->put($class, $collection); |
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}); |
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})->put($original->getKey(), $cloned->getKey()); |
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} |
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} |
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anfischer /
cloner
