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<?php |
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namespace Staudenmeir\LaravelAdjacencyList\Eloquent\Relations; |
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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\Eloquent\Relations\HasMany; |
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/** |
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* @template TRelatedModel of \Illuminate\Database\Eloquent\Model |
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* @extends HasMany<TRelatedModel> |
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*/ |
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class Siblings extends HasMany |
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{ |
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/** |
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* Whether to include the parent model. |
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* |
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* @var bool |
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*/ |
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protected $andSelf; |
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/** |
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* Create a new siblings relationship instance. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @param \Illuminate\Database\Eloquent\Model $parent |
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* @param string $foreignKey |
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* @param string $localKey |
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* @param bool $andSelf |
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* @return void |
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*/ |
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public function __construct(Builder $query, Model $parent, $foreignKey, $localKey, $andSelf) |
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{ |
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$this->andSelf = $andSelf; |
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parent::__construct($query, $parent, $foreignKey, $localKey); |
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} |
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/** |
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* Set the base constraints on the relation query. |
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* |
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* @return void |
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*/ |
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public function addConstraints() |
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{ |
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if (static::$constraints) { |
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$this->query->where($this->foreignKey, '=', $this->getParentKey()); |
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if (!$this->andSelf) { |
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$this->query->where( |
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$this->related->getQualifiedLocalKeyName(), |
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'<>', |
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$this->parent->{$this->parent->getLocalKeyName()} |
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); |
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} |
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if (!array_key_exists($this->localKey, $this->parent->getAttributes())) { |
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$this->query->whereNotNull($this->foreignKey); |
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} |
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} |
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} |
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/** |
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* Set the constraints for an eager load of the relation. |
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* |
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* @param array $models |
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* @return void |
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*/ |
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public function addEagerConstraints(array $models) |
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{ |
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$keys = $this->getKeys($models, $this->localKey); |
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$this->query->where( |
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function (Builder $query) use ($keys) { |
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$query->whereIn($this->foreignKey, $keys); |
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if (in_array(null, $keys, true)) { |
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$query->orWhereNull($this->foreignKey); |
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} |
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} |
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); |
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} |
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/** |
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* Match the eagerly loaded results 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 match(array $models, Collection $results, $relation) |
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{ |
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$dictionary = $this->buildDictionary($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[$key]); |
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if (!$this->andSelf) { |
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$value = $value->reject(function (Model $result) use ($model) { |
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return $result->{$result->getLocalKeyName()} == $model->{$model->getLocalKeyName()}; |
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})->values(); |
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} |
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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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* Get the results of the relationship. |
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* |
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* @phpstan-return \Traversable<int, TRelatedModel> |
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*/ |
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public function getResults() |
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{ |
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return $this->query->get(); |
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} |
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/** |
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* Add the constraints for a relationship query. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @param \Illuminate\Database\Eloquent\Builder $parentQuery |
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* @param array|mixed $columns |
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* @return \Illuminate\Database\Eloquent\Builder |
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*/ |
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public function getRelationExistenceQuery(Builder $query, Builder $parentQuery, $columns = ['*']) |
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{ |
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if ($query->getQuery()->from === $parentQuery->getQuery()->from) { |
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return $this->getRelationExistenceQueryForSelfRelation($query, $parentQuery, $columns); |
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} |
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$first = $this->foreignKey; |
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$second = $parentQuery->qualifyColumn($this->localKey); |
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$query->select($columns) |
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->where(function (Builder $query) use ($first, $second) { |
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$query->whereColumn($first, '=', $second) |
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->orWhere(function (Builder $query) use ($first, $second) { |
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$query->whereNull($first)->whereNull($second); |
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}); |
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}); |
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if (!$this->andSelf) { |
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$query->whereColumn( |
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$this->related->getQualifiedLocalKeyName(), |
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'<>', |
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$this->parent->getQualifiedLocalKeyName() |
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); |
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} |
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return $query; |
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} |
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/** |
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* Add the constraints for a relationship query on the same table. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @param \Illuminate\Database\Eloquent\Builder $parentQuery |
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* @param array|mixed $columns |
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* @return \Illuminate\Database\Eloquent\Builder |
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*/ |
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public function getRelationExistenceQueryForSelfRelation(Builder $query, Builder $parentQuery, $columns = ['*']) |
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{ |
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$table = $this->getRelationCountHash(); |
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$query->from($query->getModel()->getTable().' as '.$table); |
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$query->getModel()->setTable($table); |
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$first = $table.'.'.$this->getForeignKeyName(); |
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$second = $this->getQualifiedParentKeyName(); |
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$query->select($columns) |
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->where(function (Builder $query) use ($first, $second) { |
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$query->whereColumn($first, '=', $second) |
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->orWhere(function (Builder $query) use ($first, $second) { |
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$query->whereNull($first)->whereNull($second); |
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}); |
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}); |
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if (!$this->andSelf) { |
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$query->whereColumn( |
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$table.'.'.$this->related->getLocalKeyName(), |
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'<>', |
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$this->parent->getQualifiedLocalKeyName() |
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); |
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} |
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return $query; |
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} |
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} |
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