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<?php |
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namespace Staudenmeir\EloquentJsonRelations\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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use Illuminate\Database\Query\Expression; |
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use Illuminate\Database\Query\JoinClause; |
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use Illuminate\Support\Arr; |
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trait IsConcatenableHasManyJsonRelation |
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{ |
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use IsConcatenableRelation; |
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/** |
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* Append the relation's through parents, foreign and local keys to a deep relationship. |
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* |
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* @param \Illuminate\Database\Eloquent\Model[] $through |
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* @param array $foreignKeys |
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* @param array $localKeys |
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* @param int $position |
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* @return array |
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*/ |
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public function appendToDeepRelationship(array $through, array $foreignKeys, array $localKeys, int $position): array |
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{ |
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if ($position === 0) { |
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$foreignKeys[] = function (Builder $query, Builder $parentQuery = null) { |
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if ($parentQuery) { |
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$this->getRelationExistenceQuery($this->query, $parentQuery); |
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} |
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$this->mergeWhereConstraints($query, $this->query); |
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}; |
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$localKeys[] = $this->localKey; |
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} else { |
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$foreignKeys[] = function (Builder $query, JoinClause $join) { |
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[$sql, $bindings] = $this->relationExistenceQueryParentKey($query); |
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$query->addBinding($bindings, 'join'); |
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$join->whereJsonContains( |
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$this->getQualifiedPath(), |
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$query->getQuery()->connection->raw($sql) |
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); |
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}; |
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$localKeys[] = null; |
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} |
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return [$through, $foreignKeys, $localKeys]; |
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} |
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/** |
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* Get the custom through key for an eager load of the relation. |
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* |
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* @param string $alias |
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* @return \Illuminate\Database\Query\Expression |
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*/ |
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public function getThroughKeyForDeepRelationships(string $alias): Expression |
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{ |
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$throughKey = $this->getJsonGrammar($this->query)->compileJsonValueSelect($this->path); |
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$alias = $this->query->getQuery()->grammar->wrap($alias); |
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return new Expression("$throughKey as $alias"); |
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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 = $this->getDictionaryKey($model->{$this->localKey}); |
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if (isset($dictionary[$key])) { |
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$collection = $this->related->newCollection($dictionary[$key]); |
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$model->setRelation($relation, $collection); |
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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 $results): array |
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{ |
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$dictionary = []; |
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$key = $this->key ? str_replace('->', '.', $this->key) : null; |
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foreach ($results as $result) { |
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$values = json_decode($result->laravel_through_key, true); |
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if ($key) { |
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$values = array_filter( |
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Arr::pluck($values, $key), |
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fn ($value) => $value !== null |
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); |
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} |
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foreach ($values as $value) { |
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$dictionary[$value][] = $result; |
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} |
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} |
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return $dictionary; |
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} |
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} |
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staudenmeir /
eloquent-json-relations
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