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<?php |
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namespace Huntie\JsonApi\Support; |
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use Illuminate\Database\Eloquent\Model; |
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use Illuminate\Pagination\LengthAwarePaginator; |
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use Illuminate\Support\Collection; |
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/** |
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* Transform Eloquent models and collections into JSON API objects. |
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*/ |
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trait JsonApiTransforms |
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{ |
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/** |
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* Transform a model instance into a JSON API object. |
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* |
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* @param Model $record |
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* @param array|null $fields Field subset to return |
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* @param array|null $include Relations to include |
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* |
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* @return array |
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*/ |
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protected function transformRecord($record, array $fields = [], array $include = []) |
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{ |
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$relations = array_unique(array_merge($record->getRelations(), $include)); |
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$attributes = $record->toArray(); |
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$record = $record->load($relations); |
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$relationships = []; |
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$included = collect([]); |
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foreach ($relations as $relation) { |
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$relationships[$relation] = $this->transformRelationship($record, $relation); |
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if (in_array($relation, $include)) { |
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if ($record->{$relation} instanceof Collection) { |
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$included->merge($this->transformCollectionSimple($record->{$relation})['data']); |
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} else if ($record->{$relation} instanceof Model) { |
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$included->push($this->transformRecordSimple($record->{$relation})['data']); |
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} |
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} |
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} |
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array_forget($attributes, $relations); |
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$included = array_filter($included->toArray()); |
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if (!empty($fields)) { |
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$attributes = array_only($attributes, $fields); |
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} |
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$data = array_filter([ |
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'type' => str_slug($record->getTable()), |
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'id' => $record->id, |
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'attributes' => array_except($attributes, ['id']), |
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'relationships' => $relationships, |
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]); |
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return array_filter(compact('data', 'included')); |
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} |
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/** |
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* Transform a model instance into a JSON API object without additonal data. |
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* |
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* @param Model $record |
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* |
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* @return array |
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*/ |
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protected function transformRecordSimple($record) |
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{ |
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$attributes = array_diff_key($record->toArray(), $record->getRelations()); |
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$attributes = array_except($attributes, ['id']); |
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return [ |
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'data' => [ |
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'type' => str_slug($record->getTable()), |
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'id' => $record->id, |
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'attributes' => $attributes, |
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] |
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]; |
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} |
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/** |
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* Transform a model instance into a JSON API resource identifier. |
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* |
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* @param Model $record |
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* |
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* @return array |
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*/ |
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protected function transformRecordIdentifier($record) |
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{ |
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return [ |
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'data' => [ |
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'type' => str_slug($record->getTable()), |
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'id' => $record->id, |
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] |
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]; |
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} |
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/** |
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* Transform a set of models into a JSON API collection. |
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* |
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* @param Collection|LengthAwarePaginator $records |
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* @param array $fields |
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* @param array|null $include |
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* |
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* @return array |
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*/ |
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protected function transformCollection($records, array $fields = [], array $include = []) |
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{ |
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$data = []; |
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$links = []; |
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$included = []; |
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foreach ($records as $record) { |
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$object = $this->transformRecord($record, $fields, $include); |
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if (isset($object['included'])) { |
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$included = array_merge($included, $object['included']); |
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} |
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$data[] = $object['data']; |
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} |
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if ($records instanceof LengthAwarePaginator) { |
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$links['first'] = $records->url(1); |
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$links['last'] = $records->url($records->lastPage()); |
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$links['prev'] = $records->previousPageUrl(); |
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$links['next'] = $records->nextPageUrl(); |
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} |
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return array_merge(compact('data'), array_filter(compact('links', 'included'))); |
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} |
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/** |
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* Transform a set of models into a JSON API collection without additional data. |
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* |
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* @param Collection $records |
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* |
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* @return array |
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*/ |
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protected function transformCollectionSimple($records) |
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{ |
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$data = $records->map(function ($record) { |
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return $this->transformRecordSimple($record)['data']; |
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})->toArray(); |
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return compact('data'); |
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} |
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/** |
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* Transform a set of models into a collection of JSON API resource |
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* identifier objects. |
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* |
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* @param Collection $records |
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* |
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* @return array |
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*/ |
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protected function transformCollectionIdentifiers($records) |
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{ |
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$data = $records->map(function ($record) { |
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return $this->transformRecordIdentifier($record)['data']; |
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}); |
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return compact('data'); |
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} |
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/** |
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* Transform a model relationship into a single, or collection of, JSON API |
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* resource identifier objects. |
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* |
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* @param Model $record |
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* @param string $relation |
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* |
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* @return array |
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*/ |
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protected function transformRelationship($record, $relation) |
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{ |
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$data = null; |
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if ($record->{$relation} instanceof Collection) { |
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return $this->transformCollectionIdentifiers($record->{$relation}); |
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} else if ($record->{$relation} instanceof Model) { |
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return $this->transformRecordIdentifier($record->{$relation}); |
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} |
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return compact('data'); |
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} |
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} |
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huntie /
laravel-simple-jsonapi
