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<?php |
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namespace Staudenmeir\EloquentHasManyDeep; |
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use Illuminate\Database\Eloquent\Builder; |
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use Illuminate\Database\Eloquent\Model; |
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use Illuminate\Database\Eloquent\Relations\Pivot; |
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use Staudenmeir\EloquentHasManyDeep\Traits\ConcatenatesRelationships; |
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use Staudenmeir\EloquentHasManyDeep\Traits\ReversesRelationships; |
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trait HasRelationships |
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{ |
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use ConcatenatesRelationships; |
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use ReversesRelationships; |
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/** |
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* Define a has-many-deep relationship. |
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* |
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* @param string $related |
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* @param array $through |
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* @param array $foreignKeys |
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* @param array $localKeys |
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* @return \Staudenmeir\EloquentHasManyDeep\HasManyDeep |
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*/ |
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public function hasManyDeep($related, array $through, array $foreignKeys = [], array $localKeys = []) |
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{ |
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return $this->newHasManyDeep(...$this->hasOneOrManyDeep($related, $through, $foreignKeys, $localKeys)); |
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} |
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/** |
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* Define a has-one-deep relationship. |
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* |
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* @param string $related |
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* @param array $through |
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* @param array $foreignKeys |
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* @param array $localKeys |
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* @return \Staudenmeir\EloquentHasManyDeep\HasOneDeep |
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*/ |
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public function hasOneDeep($related, array $through, array $foreignKeys = [], array $localKeys = []) |
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{ |
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return $this->newHasOneDeep(...$this->hasOneOrManyDeep($related, $through, $foreignKeys, $localKeys)); |
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} |
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/** |
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* Prepare a has-one-deep or has-many-deep relationship. |
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* |
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* @param string $related |
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* @param array $through |
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* @param array $foreignKeys |
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* @param array $localKeys |
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* @return array |
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*/ |
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protected function hasOneOrManyDeep($related, array $through, array $foreignKeys, array $localKeys) |
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{ |
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$relatedSegments = preg_split('/\s+from\s+/i', $related); |
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/** @var \Illuminate\Database\Eloquent\Model $relatedInstance */ |
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$relatedInstance = $this->newRelatedInstance($relatedSegments[0]); |
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if (isset($relatedSegments[1])) { |
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$relatedInstance->setTable($relatedSegments[1]); |
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} |
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$throughParents = $this->hasOneOrManyDeepThroughParents($through); |
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$foreignKeys = $this->hasOneOrManyDeepForeignKeys($relatedInstance, $throughParents, $foreignKeys); |
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$localKeys = $this->hasOneOrManyDeepLocalKeys($relatedInstance, $throughParents, $localKeys); |
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return [$relatedInstance->newQuery(), $this, $throughParents, $foreignKeys, $localKeys]; |
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} |
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/** |
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* Prepare the through parents for a has-one-deep or has-many-deep relationship. |
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* |
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* @param array $through |
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* @return array |
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*/ |
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protected function hasOneOrManyDeepThroughParents(array $through) |
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{ |
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return array_map(function ($class) { |
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$segments = preg_split('/\s+(as|from)\s+/i', $class, -1, PREG_SPLIT_DELIM_CAPTURE); |
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$instance = str_contains($segments[0], '\\') |
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? (method_exists($this, 'newRelatedThroughInstance') // TODO[L10] |
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? $this->newRelatedThroughInstance($segments[0]) |
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: new $segments[0]()) |
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: (new Pivot())->setTable($segments[0]); |
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if (isset($segments[1])) { |
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$instance->setTable( |
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$segments[1] === 'as' |
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? $instance->getTable().' as '.$segments[2] |
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: $segments[2] |
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); |
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} |
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return $instance; |
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}, $through); |
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} |
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/** |
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* Prepare the foreign keys for a has-one-deep or has-many-deep relationship. |
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* |
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* @param \Illuminate\Database\Eloquent\Model $related |
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* @param \Illuminate\Database\Eloquent\Model[] $throughParents |
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* @param array $foreignKeys |
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* @return array |
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*/ |
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protected function hasOneOrManyDeepForeignKeys(Model $related, array $throughParents, array $foreignKeys) |
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{ |
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foreach (array_merge([$this], $throughParents) as $i => $instance) { |
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/** @var \Illuminate\Database\Eloquent\Model $instance */ |
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if (!isset($foreignKeys[$i])) { |
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if ($instance instanceof Pivot) { |
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$foreignKeys[$i] = ($throughParents[$i] ?? $related)->getKeyName(); |
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} else { |
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$foreignKeys[$i] = $instance->getForeignKey(); |
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} |
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} |
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} |
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return $foreignKeys; |
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} |
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/** |
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* Prepare the local keys for a has-one-deep or has-many-deep relationship. |
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* |
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* @param \Illuminate\Database\Eloquent\Model $related |
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* @param \Illuminate\Database\Eloquent\Model[] $throughParents |
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* @param array $localKeys |
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* @return array |
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*/ |
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protected function hasOneOrManyDeepLocalKeys(Model $related, array $throughParents, array $localKeys) |
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{ |
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foreach (array_merge([$this], $throughParents) as $i => $instance) { |
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/** @var \Illuminate\Database\Eloquent\Model $instance */ |
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if (!isset($localKeys[$i])) { |
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if ($instance instanceof Pivot) { |
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$localKeys[$i] = ($throughParents[$i] ?? $related)->getForeignKey(); |
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} else { |
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$localKeys[$i] = $instance->getKeyName(); |
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} |
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} |
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} |
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return $localKeys; |
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} |
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/** |
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* Instantiate a new HasManyDeep relationship. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @param \Illuminate\Database\Eloquent\Model $farParent |
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* @param \Illuminate\Database\Eloquent\Model[] $throughParents |
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* @param array $foreignKeys |
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* @param array $localKeys |
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* @return \Staudenmeir\EloquentHasManyDeep\HasManyDeep |
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*/ |
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protected function newHasManyDeep(Builder $query, Model $farParent, array $throughParents, array $foreignKeys, array $localKeys) |
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{ |
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return new HasManyDeep($query, $farParent, $throughParents, $foreignKeys, $localKeys); |
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} |
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/** |
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* Instantiate a new HasOneDeep relationship. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @param \Illuminate\Database\Eloquent\Model $farParent |
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* @param \Illuminate\Database\Eloquent\Model[] $throughParents |
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* @param array $foreignKeys |
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* @param array $localKeys |
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* @return \Staudenmeir\EloquentHasManyDeep\HasOneDeep |
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*/ |
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protected function newHasOneDeep(Builder $query, Model $farParent, array $throughParents, array $foreignKeys, array $localKeys) |
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{ |
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return new HasOneDeep($query, $farParent, $throughParents, $foreignKeys, $localKeys); |
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} |
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} |
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staudenmeir /
eloquent-has-many-deep
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