*/ class FiltersBelongsTo implements Filter { /** {@inheritdoc} */ public function __invoke(Builder $query, $value, string $property) { $values = array_values(Arr::wrap($value)); $propertyParts = collect(explode('.', $property)); $relation = $propertyParts->pop(); $relationParent = $propertyParts->implode('.'); $relatedModel = $this->getRelatedModel($query->getModel(), $relation, $relationParent); $relatedCollection = $relatedModel->newCollection(); array_walk($values, fn ($v) => $relatedCollection->add( tap($relatedModel->newInstance(), fn ($m) => $m->setAttribute($m->getKeyName(), $v)) )); if ($relatedCollection->isEmpty()) { return $query; } if ($relationParent) { $query->whereHas($relationParent, fn (Builder $q) => $q->whereBelongsTo($relatedCollection, $relation)); } else { $query->whereBelongsTo($relatedCollection, $relation); } } protected function getRelatedModel(Model $modelQuery, string $relationName, string $relationParent): Model { if ($relationParent) { $modelParent = $this->getModelFromRelation($modelQuery, $relationParent); } else { $modelParent = $modelQuery; } $relatedModel = $this->getRelatedModelFromRelation($modelParent, $relationName); return $relatedModel; } protected function getRelatedModelFromRelation(Model $model, string $relationName): ?Model { $relationObject = $model->$relationName(); if (! $relationObject instanceof Relation) { throw RelationNotFoundException::make($model, $relationName); } $relatedModel = $relationObject->getRelated(); return $relatedModel; } protected function getModelFromRelation(Model $model, string $relation, int $level = 0): ?Model { $relationParts = explode('.', $relation); if (count($relationParts) == 1) { return $this->getRelatedModelFromRelation($model, $relation); } $firstRelation = $relationParts[0]; $firstRelatedModel = $this->getRelatedModelFromRelation($model, $firstRelation); if (! $firstRelatedModel) { return null; } return $this->getModelFromRelation($firstRelatedModel, implode('.', array_slice($relationParts, 1)), $level + 1); } }