{"id":817031,"date":"2018-10-30T09:01:43","date_gmt":"2018-10-30T09:01:43","guid":{"rendered":"https:\/\/www.knowband.com\/blog\/?p=22325\/"},"modified":"2022-08-13T12:01:14","modified_gmt":"2022-07-18T12:42:09","slug":"how-to-use-graphql-in-php","status":"publish","type":"post","link":"https:\/\/www.knowband.com\/blog\/pl\/bez-kategorii\/how-to-use-graphql-in-php\/","title":{"rendered":"How to use GraphQL in PHP?"},"content":{"rendered":"

<\/head><\/p>\n

Czy s\u0142ysza\u0142e\u015b o GraphQL?<\/h2>\n
$\"Jak$ <\/a><\/p>\n
GraphQL to nowoczesny j\u0119zyk zapyta\u0144 dla API. Innymi s\u0142owy, mo\u017cemy powiedzie\u0107, \u017ce jest to nowoczesny j\u0119zyk zapyta\u0144 warstwy aplikacji.<\/p>\n
Za pomoc\u0105 GraphQL mo\u017cemy pobiera\u0107 dane z wywo\u0142a\u0144 API i dzia\u0142a on na HTTP jako REST. Zapewnia klientowi pot\u0119\u017cn\u0105 opcj\u0119, aby pyta\u0142, czego dok\u0142adnie potrzebuje, i pomaga we wzro\u015bcie lub ocenie API.<\/p>\n

Korzy\u015bci z GraphQL<\/h2>\n
$\"Korzy\u015bci$ <\/a><\/p>\n
\n
Dostarcza tylko ograniczone dane, kt\u00f3rych faktycznie potrzebujemy. Nigdy nie pobierze \u017cadnych dodatkowych danych ani mniej danych, kt\u00f3rych nie potrzebujesz.<\/li>\n
Jest to pot\u0119\u017cny system open source.<\/li>\n
Daje mo\u017cliwo\u015b\u0107 efektywnego kodowania. Za\u0142\u00f3\u017cmy na przyk\u0142ad, \u017ce tabela zawiera 40 kolumn, a czasami potrzebujemy tylko 10 kolumn, czasami 20 itd. Aby rozwi\u0105za\u0107 ten problem, mamy dwie opcje w normalnym API, albo pobierz wszystkie dane w ka\u017cdym wywo\u0142aniu API i u\u017cyj dowolnej, kt\u00f3r\u0105 chcemy, albo musimy napisa\u0107 liczb\u0119 interfejs\u00f3w API dla tej samej tabeli, aby\u015bmy mogli wywo\u0142a\u0107 wydajne API zgodnie z wymaganiami. Ale w GraphQL musimy napisa\u0107 tylko jedno API. Tak wi\u0119c kod linii r\u00f3wnie\u017c zostaje skr\u00f3cony.<\/li>\n
Interfejsy API GraphQL s\u0105 ustrukturyzowane pod wzgl\u0119dem typ\u00f3w i p\u00f3l.<\/li>\n<\/ul>\n
$\"J\u0119zyk$ <\/a><\/h2>\n
GraphQL obs\u0142uguje r\u00f3\u017cne j\u0119zyki, takie jak<\/p>\n
\n
C#<\/li>\n
. NET<\/li>\n
Clojure<\/li>\n
Eliksir<\/li>\n
Erlang<\/li>\n
Go<\/li>\n
Groovy<\/li>\n
Jawa<\/li>\n
JavaScript<\/li>\n
PHP<\/li>\n
Python<\/li>\n
Scala<\/li>\n
Rubin<\/li>\n<\/ul>\n
W tym blogu dowiemy si\u0119 o GraphQL w PHP.<\/p>\n
Po pierwsze powinni\u015bmy wiedzie\u0107, \u017ce w dowolnym j\u0119zyku, aby korzysta\u0107 z GraphQL, musimy zaimportowa\u0107 ich bibliotek\u0119.<\/p>\n
W PHP mo\u017cemy u\u017cy\u0107 tego pliku biblioteki: webonyx\/graphql-php.<\/p>\n
Instalacja<\/h2>\n
U\u017cywaj\u0105c kompozytora, po prostu uruchom:<\/p>\n
kompozytor wymaga webonyx\/graphql-php<\/pre>\n
Jak GraphQL pobiera dane za pomoc\u0105 zapyta\u0144?<\/h2>\n
W REST API zwraca dane w okre\u015blonej strukturze. Pisz\u0105c API w REST, musimy zdefiniowa\u0107 struktur\u0119 danych, jakie dane b\u0119d\u0105 zwracane, ale GraphQL nie ma zdefiniowanej struktury, kt\u00f3r\u0105 zwr\u00f3ci. Mo\u017ce zmieni\u0107 ich struktur\u0119 zgodnie z potrzebami klienta.<\/p>\n
Klient musi wys\u0142a\u0107 do serwera troch\u0119 wi\u0119cej informacji, aby zadeklarowa\u0107 swoje wymagania, i ta informacja nazywa si\u0119 Zapytanie.<\/p>\n
W zapytaniu musimy zdefiniowa\u0107 pola g\u0142\u00f3wne, innymi s\u0142owy m\u00f3wimy to samo, co \u0142adunek dla us\u0142ugi.<\/p>\n
rozwi\u0105za\u0107<\/h2>\n
$\"Resolver$ <\/a><\/p>\n
W rzeczywistych aplikacjach takich jak aplikacje e-commerce tj. PrestaShop, OpenCart, Magneto itp. musimy pobra\u0107 dane klienta z bazy danych przez customerId i musimy je zwr\u00f3ci\u0107. Naszym celem jest to, \u017ce nie musimy zwraca\u0107 tablic, musimy zwraca\u0107 warto\u015bci, a\ufffdgraphql-php\ufffdprzeka\u017ce je nietkni\u0119te do zagnie\u017cd\u017conych program\u00f3w t\u0142umacz\u0105cych.<\/p>\n
Przelicznik jest w zasadzie funkcj\u0105 oddzwaniania dla ka\u017cdego pola. Dla wszystkich p\u00f3l zawsze istnieje domy\u015blny przelicznik. Kiedy definiujemy nasz\u0105 w\u0142asn\u0105 funkcj\u0119\ufffdresolve\ufffd dla pola, po prostu zast\u0119pujemy domy\u015blny resolver.<\/p>\n
Jak zdefiniowa\u0107 schemat zapytania?<\/h2>\n
$schema_obj = nowy schemat { \"query\" => $queryType, \"mutation\" => $mutationType, \"subscription\" => $subscriptionType }<\/pre>\n
Przyk\u0142ad<\/strong><\/h3>\n
Poniewa\u017c jest to blog dla pocz\u0105tkuj\u0105cych lub nowszych, zr\u00f3bmy prosty przyk\u0142ad.<\/p>\n
Stw\u00f3rzmy system typ\u00f3w, kt\u00f3ry b\u0119dzie przetwarza\u0142 nast\u0119puj\u0105ce proste zapytanie:<\/p>\n
query { echo(message: \"Cze\u015b\u0107 Knowband, to jest m\u00f3j pierwszy program GraphQL\") }\n<\/pre>\n
Uwaga:<\/strong> W tym celu potrzebujemy typu obiektu z echem pola.<\/p>\n
'Query', 'fields' => [ 'echo' => [ 'type' => Type::string(), 'args' => [ 'message' => Type::nonNull(Type::string() ), ], 'resolve' => function ($root, $args) { return $root['prefix'] . $args['wiadomo\u015b\u0107']; } ], ], ]);<\/pre>\n
Opcja \ufffdresolve\ufffd jest\ufffdbardzo wa\u017cn\u0105\ufffdopcj\u0105\ufffddefinicji\ufffdpola.\ufffdJest to\ufffd ta\ufffd,\ufffdkt\u00f3ra\ufffdjest\ufffdodpowiedzialna\ufffdza\ufffdzwr\u00f3cenie\ufffdwarto\u015bci\ufffdnaszego\ufffdpola.\ufffd Warto\u015bci\ufffdp\u00f3l\ufffdskalarnych\ufffdzostan\u0105\ufffdbezpo\u015brednio\ufffduwzgl\u0119dnione\ufffdw\ufffdodpowiedzi\ufffd,podczas gdy\ufffdwarto\u015bci\ufffdp\u00f3l\ufffdkompozytowych\ufffdzostan\u0105\ufffdprzekazywane\ufffddo\ufffd\ufffd zagnie\u017cd\u017cone\ufffdpola\ufffdresolvers.\ufffdPola z\u0142o\u017cone\ufffds\u0105\ufffdinterfejsami,\ufffdpo\u0142\u0105czeniami\ufffdobiektami\ufffditp.<\/p>\n
Teraz\ufffdpo\ufffdprzygotowaniu\ufffdnaszego\ufffdtypu\ufffdnapiszmy\ufffdplik\ufffdGraphQL\ufffdendpoint\ufffddla\ufffdgo\ufffdgraphql_program_1.php.<\/p>\n
$QueryType ]); $Input = file_get_contents('php:\/\/input'); $input_data = json_decode($Input, true); $query_data = $input_data['zapytanie']; $variable_values \u200b\u200b= isset($input_data['variables']) ? $input_data['zmienne'] : null; $warto\u015b\u0107 = ['prefiks' => 'Wyj\u015bcie: ']; $resultant = GraphQL::executeQuery($schema_obj, $query_data, $value, null, $variable_values); $output_value = $resultant->toArray(); } catch (\\Exception $e) { $output_value = [ 'errors' => [ [ 'message' => $e->getMessage() ] ] ]; } header('Typ tre\u015bci: aplikacja\/json'); echo json_encode($warto\u015b\u0107_wyj\u015bciowa); ?><\/pre>\n
Jak mo\u017cemy uruchomi\u0107 kod?<\/strong><\/h3>\n
Kod mo\u017cemy uruchomi\u0107 poprzez:<\/p>\n
php -S localhost:8080 graphql_program_1.php curl https:\/\/localhost:8080 -d '{\"query\": \"zapytanie { echo(wiadomo\u015b\u0107: \\\" Cze\u015b\u0107 Knowband, to jest m\u00f3j pierwszy program GraphQL \\\") }\" }'<\/pre>\n
W przypadku jakichkolwiek pyta\u0144 prosimy o kontakt pod adresem support@knowband.com. Knowband zapewnia najlepsze w swojej klasie modu\u0142y dla Prestashop, Opencart, Magento i Magento 2. Zapoznaj si\u0119 z jednym z naszych najpopularniejszych modu\u0142\u00f3w Prestashop o nazwie One page supercheckout:
\n<\/iframe><\/p>\n<p> <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Czy s\u0142ysza\u0142e\u015b o GraphQL? GraphQL to nowoczesny j\u0119zyk zapyta\u0144 dla API. Innymi s\u0142owy, mo\u017cemy powiedzie\u0107, \u017ce jest to nowoczesny j\u0119zyk zapyta\u0144 warstwy aplikacji. Za pomoc\u0105 GraphQL mo\u017cemy pobiera\u0107 dane z wywo\u0142a\u0144 API i dzia\u0142a on na HTTP jako REST. Zapewnia klientowi pot\u0119\u017cn\u0105 opcj\u0119, aby pyta\u0142, czego dok\u0142adnie potrzebuje, i pomaga we wzro\u015bcie lub ocenie API. […]<\/p>\n","protected":false},"author":15,"featured_media":817011,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kbui_enabled":"","footnotes":""},"categories":[],"tags":[28589,28591,28592,28590],"class_list":["post-817031","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","tag-graficznyql","tag-graphicql-w-php","tag-uyj-graphql-w-php","tag-webonyks"],"acf":[],"yoast_head":"\n<title>How to use GraphQL in PHP? - Knowband Blog | Ecommerce Modules<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.knowband.com\/blog\/pl\/bez-kategorii\/how-to-use-graphql-in-php\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to use GraphQL in PHP? - Knowband Blog | Ecommerce Modules\" \/>\n<meta property=\"og:description\" content=\"Czy s\u0142ysza\u0142e\u015b o GraphQL? 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<\/a><\/h2>\nGraphQL obs\u0142uguje r\u00f3\u017cne j\u0119zyki, takie jak<\/p>\n\nC#<\/li>\n. NET<\/li>\nClojure<\/li>\nEliksir<\/li>\nErlang<\/li>\nGo<\/li>\nGroovy<\/li>\nJawa<\/li>\nJavaScript<\/li>\nPHP<\/li>\nPython<\/li>\nScala<\/li>\n

Instalacja<\/h2>\nU\u017cywaj\u0105c kompozytora, po prostu uruchom:<\/p>\n