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<?php |
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namespace Staudenmeir\LaravelMergedRelations\Eloquent\Relations; |
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use Illuminate\Database\Eloquent\Collection; |
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use Illuminate\Database\Eloquent\Relations\HasMany; |
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class MergedRelation extends HasMany |
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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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* @return mixed |
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*/ |
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public function getResults() |
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{ |
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$results = ! is_null($this->getParentKey()) |
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? $this->get() |
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: $this->related->newCollection(); |
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foreach ($results as $result) { |
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unset($result->laravel_foreign_key); |
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} |
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return $results; |
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} |
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/** |
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* Execute the query as a "select" statement. |
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* |
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* @param array $columns |
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* @return \Illuminate\Database\Eloquent\Collection |
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*/ |
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public function get($columns = ['*']) |
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{ |
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$builder = $this->prepareQueryBuilder($columns); |
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$models = $builder->getModels(); |
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if (count($models) > 0) { |
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$models = $builder->eagerLoadRelations($models); |
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} |
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return $this->related->newCollection($models); |
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} |
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/** |
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* Execute the query and get the first related model. |
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* |
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* @param array $columns |
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* @return mixed |
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*/ |
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public function first($columns = ['*']) |
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{ |
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$results = $this->take(1)->get($columns); |
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return count($results) > 0 ? $results->first() : null; |
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} |
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/** |
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* Get a paginator for the "select" statement. |
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* |
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* @param int|null $perPage |
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* @param array $columns |
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* @param string $pageName |
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* @param int $page |
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* @return \Illuminate\Contracts\Pagination\LengthAwarePaginator |
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*/ |
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public function paginate($perPage = null, $columns = ['*'], $pageName = 'page', $page = null) |
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{ |
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$this->query->addSelect( |
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$this->shouldSelect($columns) |
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); |
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return $this->query->paginate($perPage, $columns, $pageName, $page); |
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} |
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/** |
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* Prepare the query builder for query execution. |
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* |
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* @param array $columns |
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* @return \Illuminate\Database\Eloquent\Builder |
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*/ |
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protected function prepareQueryBuilder($columns = ['*']) |
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{ |
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$builder = $this->query->applyScopes(); |
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$columns = $builder->getQuery()->columns ? [] : $columns; |
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return $builder->addSelect( |
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$this->shouldSelect($columns) |
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); |
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} |
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/** |
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* Get the select columns for the relation query. |
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* |
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* @param array $columns |
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* @return array |
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*/ |
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protected function shouldSelect(array $columns = ['*']) |
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{ |
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if ($columns === ['*']) { |
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return $columns; |
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} |
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return array_merge( |
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$columns, |
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['laravel_foreign_key', 'laravel_model', 'laravel_placeholders', 'laravel_with'] |
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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, $relation) |
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{ |
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$models = parent::match($models, $results, $relation); |
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foreach ($results as $result) { |
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unset($result->laravel_foreign_key); |
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} |
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return $models; |
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} |
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} |
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staudenmeir /
laravel-merged-relations
