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<?php |
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namespace Staudenmeir\LaravelAdjacencyList\Eloquent\Relations\Traits\Concatenation; |
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use Illuminate\Database\Eloquent\Builder; |
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use Illuminate\Database\Eloquent\Collection; |
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use Illuminate\Database\Eloquent\Model; |
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trait IsConcatenableDescendantsRelation |
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{ |
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use IsConcatenableRelation; |
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/** |
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* Set the constraints for an eager load of the deep relation. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @param array $models |
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* @return void |
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*/ |
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public function addEagerConstraintsToDeepRelationship(Builder $query, array $models): void |
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{ |
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$andSelf = $this->andSelf; |
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$this->andSelf = true; |
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$this->addEagerConstraints($models); |
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$this->andSelf = $andSelf; |
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$this->mergeExpressions($query, $this->query); |
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} |
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/** |
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* Match the eagerly loaded results for a deep relationship to their parents. |
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* |
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* @param array $models |
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* @param \Illuminate\Database\Eloquent\Collection $results |
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* @param string $relation |
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* @return array |
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*/ |
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public function matchResultsForDeepRelationship(array $models, Collection $results, string $relation): array |
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{ |
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$dictionary = $this->buildDictionaryForDeepRelationship($results); |
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foreach ($models as $model) { |
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$key = $model->{$this->localKey}; |
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if (isset($dictionary[$key])) { |
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$value = $this->related->newCollection($dictionary[$key]); |
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$model->setRelation($relation, $value); |
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} |
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} |
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return $models; |
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} |
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/** |
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* Build the model dictionary for a deep relation. |
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* |
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* @param \Illuminate\Database\Eloquent\Collection $results |
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* @return array |
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*/ |
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protected function buildDictionaryForDeepRelationship(Collection $results): array |
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{ |
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$pathSeparator = $this->related->getPathSeparator(); |
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if (!$this->andSelf) { |
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$results = $results->filter( |
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fn (Model $result) => str_contains($result->laravel_through_key, $pathSeparator) |
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); |
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} |
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return $results->mapToDictionary(function (Model $result) use ($pathSeparator) { |
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$key = strtok($result->laravel_through_key, $pathSeparator); |
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return [$key => $result]; |
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})->all(); |
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} |
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} |
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staudenmeir /
laravel-adjacency-list
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