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<?php |
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namespace Drupal\graphql\Routing; |
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use Drupal\Component\Utility\NestedArray; |
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use Drupal\Core\Routing\EnhancerInterface; |
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use Drupal\graphql\Utility\JsonHelper; |
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use GraphQL\Server\Helper; |
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use Symfony\Cmf\Component\Routing\RouteObjectInterface; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\Routing\Route; |
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class QueryRouteEnhancer implements EnhancerInterface { |
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/** |
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* {@inheritdoc} |
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*/ |
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public function enhance(array $defaults, Request $request) { |
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$route = $defaults[RouteObjectInterface::ROUTE_OBJECT]; |
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if (!$route->hasDefault('_graphql')) { |
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return $defaults; |
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} |
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$helper = new Helper(); |
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$method = $request->getMethod(); |
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$body = $this->extractBody($request); |
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$query = $this->extractQuery($request); |
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$operations = $helper->parseRequestParams($method, $body, $query); |
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// By default we assume a 'single' request. This is going to fail in the |
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// graphql processor due to a missing query string but at least provides |
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// the right format for the client to act upon. |
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return $defaults + [ |
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'_controller' => $defaults['_graphql']['single'], |
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'operations' => $operations, |
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]; |
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} |
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/** |
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* Extracts the query parameters from a request. |
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* |
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* @param \Symfony\Component\HttpFoundation\Request $request |
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* The http request object. |
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* |
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* @return array |
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* The normalized query parameters. |
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*/ |
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protected function extractQuery(Request $request) { |
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return JsonHelper::decodeParams($request->query->all()); |
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} |
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/** |
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* Extracts the body parameters from a request. |
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* |
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* @param \Symfony\Component\HttpFoundation\Request $request |
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* The http request object. |
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* |
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* @return array |
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* The normalized body parameters. |
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*/ |
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protected function extractBody(Request $request) { |
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$values = []; |
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// Extract the request content. |
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if ($content = json_decode($request->getContent(), TRUE)) { |
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$values = array_merge($values, JsonHelper::decodeParams($content)); |
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} |
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if (stripos($request->headers->get('content-type'), 'multipart/form-data') !== FALSE) { |
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return $this->extractMultipart($request, $values); |
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} |
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return $values; |
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} |
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/** |
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* Handles file uploads from multipart/form-data requests. |
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* |
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* @return array |
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* The query parameters with added file uploads. |
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*/ |
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protected function extractMultipart(Request $request, $values) { |
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// The request body parameters might contain file upload mutations. We treat |
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// them according to the graphql multipart request specification. |
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// |
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// @see https://github.com/jaydenseric/graphql-multipart-request-spec#server |
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if ($body = JsonHelper::decodeParams($request->request->all())) { |
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// Flatten the operations array if it exists. |
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$operations = isset($body['operations']) && is_array($body['operations']) ? $body['operations'] : []; |
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$values = array_merge($values, $body, $operations); |
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} |
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// According to the graphql multipart request specification, uploaded files |
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// are referenced to variable placeholders in a map. Here, we resolve this |
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// map by assigning the uploaded files to the corresponding variables. |
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if (!empty($values['map']) && is_array($values['map']) && $files = $request->files->all()) { |
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foreach ($files as $key => $file) { |
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if (!isset($values['map'][$key])) { |
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continue; |
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} |
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$paths = (array) $values['map'][$key]; |
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foreach ($paths as $path) { |
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$path = explode('.', $path); |
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if (NestedArray::keyExists($values, $path)) { |
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NestedArray::setValue($values, $path, $file); |
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} |
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} |
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} |
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} |
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return $values; |
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} |
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} |
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drupal-graphql /
graphql
