GraphQL Highway

銀座Rails#40

Transcript

1. ۜ࠲3BJMT (SBQI2-ͷߴ଎ಓ࿏
2. (SBQI2-ͱ͸
3. (SBQI2-͸'BDFCPPLʹΑͬͯ࡞ΒΕͨ w ೥
   'BDFCPPLʹΑͬͯ։ൃ։࢝
   w χϡʔεϑΟʔυͷ಺༰Λදݱ͢ΔͨΊʹߟҊ
   w ೥
   (SBQI2-ൃදʢ3FMBZ΋ಉ೥ʹൃදʣ
   w ೥
   ςΫχΧϧϓϨϏϡʔΛ୤͢Δ
   w (JU)VC͕(SBQI2-
   "1*Λఏڙ։࢝
   w ೥
   (SBQI2-
   'PVOEBUJPOʹҠ؅͞Εͨ
4. (SBQI2-͸8FC
   "1*ͷͨΊͷΫΤϦݴޠ औಘ͞ΕΔσʔλ͕ΫΤϦͱҰக͢Δ query { posts { title } } { "posts": [ { "title": "Hello World" }, { "title": "Hi" } ] }
5. ΫΤϦݴޠ͕ඞཁͳཧ༝ (SBQI2-͕3&45ʹରͯ࣋ͭ͠Ξυόϯςʔδ w ΦʔόʔϑΣονϯάΛ๷͛Δ
   w ϦΫΤετ਺ΛݮΒͤΔ
   w ΫϥΠΞϯτͷมԽʹରͯ͠ॊೈ
6. (SBQI2-Ͱ͸ΦʔόʔϑΣονϯάΛ๷͛Δ ඞཁҎ্ͷσʔλΛऔಘͯ͠͠·͏͜ͱΛΦʔόʔϑΣονϯάͱ͍͏ { "posts": [ { "title": "Hello World", "body": "Lorem ipsum", "authorId": "1" }, { "title": "Hi", "body": "Hi there.", "authorId": "2" } ] } { "posts": [ { "title": "Hello World" }, { "title": "Hi" } ] }
7. (SBQI2-Ͱ͸ΦʔόʔϑΣονϯάΛ๷͛Δ w ΫϥΠΞϯτ͕ඞཁͳσʔλΛཁٻ͢ΔͨΊΦʔόʔϑΣονϯά͕ى͖ͳ͍
   w ΦʔόʔϑΣονϯά͕๷͕ΕΔ͜ͱͰ
   w సૹྔΛখ͘͞Ͱ͖Δ
   w αʔόʔαΠυ΋ϦιʔεΛઅ໿Ͱ͖Δ
   w ΞϯμʔϑΣονϯά͸όά😢
8. (SBQI2-Ͱ͸ϦΫΤετ਺ΛݮΒͤΔ ґଘؔ܎ͷ͋ΔϦιʔεΛҰ౓ͰऔಘͰ͖Δ GET /posts GET /author/1 GET /author/2 query { posts { title author { name } } }
9. (SBQI2-Ͱ͸ϦΫΤετ਺ΛݮΒͤΔ w ͻͱͭͷը໘ʹඞཁͳσʔλΛϦΫΤετͰऔಘͰ͖Δͷ͕ཧ૝
   w ϦΫΤετʹ͔͔Δ͕࣌ؒ355
   3PVOE
   5SJQ
   5JNF
   w ฒྻʹϦΫΤετͰ͖Ε͹ෳ਺ͷϦΫΤετ͕͋ͬͯ΋
   355ͰࡁΉ͕
   w ϦΫΤετؒʹґଘؔ܎͕͋Δͱ/
   355ʹͳΔ
   w 3&45Ͱ͸࣮ݱ͕ࠔ೉
   w ৔߹ʹΑͬͯ͸3&45෩ͷԿ͔ʹͳ͍ͬͯ͘😢
10. (SBQI2-͸ΫϥΠΞϯτͷมԽʹॊೈ "1*ʹྺ࢙తܦҢ͕஝ੵ͍ͯ͘͜͠ͱΛ๷͛Δ { "title": "Hello World", "body": "Lorem ipsum", "tags": ["essay", "blog"], // ࠓ͸࢖͍ͬͯͳ͍͕ޓ׵ੑͷͨΊʹ࢒͢ "tag_objects": [ { "name": "essay", "id": "1" }, { "name": "blog", "id": "2" } ] }
11. (SBQI2-͸ΫϥΠΞϯτͷมԽʹॊೈ w ͻͱͭͷը໘ʹඞཁͳσʔλΛϦΫΤετͰऔಘͰ͖Δͷ͕ཧ૝ͱ͢Δͱ
    w ը໘ͷදࣔཁૉΛม͑Δ౓ʹ"1*Λม͑Δͷ͸ͭΒ͍
    w ͢Ͱʹ࢖͍ͬͯͳ͍ϑΟʔϧυΛޓ׵ੑͷͨΊʹ࢒ͨ͠Γ͢Δ
    w 8FCϑϩϯτΤϯυ͚ͩͩͱ؇࿨͞ΕΔ
    w ωΠςΟϒΞϓϦ͸ݹ͍όʔδϣϯ͕࢒Γଓ͚Δ৔߹͕ଟ͍
12. (SBQI2-ͱ͸ 8FC
    "1*ͷͨΊͷΫΤϦݴޠ w ݱ୅తͳΫϥΠΞϯταΠυͷ։ൃʹదԠ͍ͯ͠Δ
    w 3&45తͳΞϓϩʔνͰ͸ղܾ͠ʹ͍͘՝୊Λղܾ͢Δ
    w ΦʔόʔϑΣονϯάΛ๷͛Δ
    w ϦΫΤετ਺ΛݮΒͤΔ
    w ΫϥΠΞϯτͷมԽʹରͯ͠ॊೈ
    w ͍͔ʹ΋Αͦ͞͏Ͱ͢Ͷʂ
13. (SBQI2-ͷجຊ
14. (SBQI2-ͷͭͷΦϖϨʔγϣϯ w 2VFSZ
    w Ϧιʔεͷऔಘɻ(&5ʹ૬౰
    w .VUBUJPO
    w Ϧιʔεͷมߋɻ1045165%&-&5&ʹ૬౰
    w 4VCTDSJQUJPO
    w Ϧιʔεͷߪಡɻ8FC4PDLFUͳͲΛ࢖͏ɻࠓճ͸ׂѪ
15. ΦϖϨʔγϣϯͷॻࣜ লུͰ͖Δ෦෼΋͋Δ query { post(id: "1") { title } } 
 query GetPost { post(id: "1") { title } } 
 query GetPost($id: ID!) { post(id: $id) { title } }
16. ΦϖϨʔγϣϯͷॻࣜ w RVFSZNVUBUJPOTVCTDSJQUJPO
    w ΦϖϨʔγϣϯ໊
    w ม਺
    w ϑΟʔϧυͷબ୒
    w ύϥϝʔλΛऔΕΔ query GetPost($id: ID!) { post(id: $id) { title } }
17. (SBQI2-ͷεΩʔϚ 4%-
    4DIFNB
    %F fi OJUJPO
    -BOHVBHF type Query { # ... } type Mutation { # ... } schema { query: Query mutation: Mutation }
18. (SBQI2-ͷܕ w εΧϥܕ
    w /PO/VMMܕ
    w Ϧετܕ
    w ྻڍܕ 
 w ΦϒδΣΫτܕ
    w Πϯϓοτܕ
    w ϢχΦϯܕ
    w ΠϯλʔϑΣʔε
19. εΧϥܕ w *OU
    Š
    ූ߸෇͖Ϗοτ੔਺
    w 'MPBU
    Š
    ഒਫ਼౓ුಈখ਺఺਺
    w 4USJOH
    Š
    65'จࣈྻɻೋॏҾ༻ූͰғ͏
    w #PPMFBO
    Š
    ਅِ஋ɻUSVFGBMTF
    w *%
    Š
    ϢχʔΫͳࣝผࢠɻ࣮ଶ͸จࣈྻ
    w ಠࣗʹఆٛ͢Δ͜ͱ΋͋Δ
20. /PO/VMMܕ w (SBQI2-ͷܕ͸σϑΥϧτͰOVMM஋Λڐ༰͢Δ
    w OVMM஋͕ೖΒͳ͍͜ͱΛ໌֬ʹ͢Δͷ͕/PO/VMMܕ
    w 
    Λޙஔ͢Δͱ/PO/VMMܕʹͳΔ
    String # null஋Λڐ༰͢Δ String! # null஋Λڐ༰͠ͳ͍
21. Ϧετܕ w εΫΤΞϒϥέοτͰғ͏
    w /PO/VMMܕͱͷ૊Έ߹Θͤʹ஫ҙ
    [Post] [Post]! [Post!] [Post!]!
22. ྻڍܕ enum Order { ASC DESC } type Query { posts(order: Order = DESC): [Post!]! }
23. ΦϒδΣΫτܕ type Author { name: String! } type Post { title: String! author: Author! } type Query { posts: [Post!]! }
24. Πϯϓοτܕ w ύϥϝʔλʹΦϒδΣΫτܕ͸࢖͑ͳ͍
    input CreatePostInput { title: String! body: String! } type Mutation { createPost(input: CreatePostInput!): Post! }
25. ϢχΦϯܕ type Comment { text: String! } type Trackback { title: String! url: String! } union Feedback = Comment | Trackback type Post { title: String! feedbacks: [Feedback!]! }
26. ΠϯλʔϑΣʔε interface Publication { title: String! body: String! } type Page implements Publication { title: String! body: String! } type Post implements Publication { title: String! body: String! comments: [Comment!]! }
27. σΟϨΫςΟϒ w εΩʔϚ΍ΦϖϨʔγϣϯʹϝλσʔλΛ͚ͭΒΕΔ
    directive @deprecated( reason: String = "No longer supported” ) on FIELD_DEFINITION | ENUM_VALUE type Query { posts: [Post!]! @deprecated }
28. (SBQI2-ͷجຊ w 2VFSZ.VUBUJPO4VCTDSJQUJPO͕͋Δ
    w ܕ͕͋Δ
    w εΩʔϚ͕ॻ͚Δ
    w ࢓༷͕ఆΊΒΕ͍ͯΔ
    w IUUQTTQFDHSBQIRMPSH0DUPCFS
29. Τϥʔ͸ϨεϙϯεͷFSSPSTͰฦ͢ ΤϥʔͷϑΥʔϚοτ͸࢓༷ͰఆΊΒΕ͍ͯΔ { "data": null, "errors": [ { "message": "body could not be fetched", "locations": [ { "line": 4, "column": 4 } ], "path": ["post", "body"] } ] }
30. (SBQI2-
    PWFS
    )551 HJUIVCDPNHSBQIRMHSBQIRMPWFSIUUQ w (SBQI2-
    "1*Λ)551Ͱఏڙ͢Δඪ४తͳ࢓༷͕ࡦఆத
    w ୯ҰͷΤϯυϙΠϯτʢయܕతʹ͸
    /graphqlʣͰ"1*Λఏڙ
    w GET΋͘͠͸POST
    { "query": "", "operationName": "", "variables": {} }
31. (SBQI2-ͷઃܭ
32. εΩʔϚઃܭ w ΞϓϦέʔγϣϯͷυϝΠϯʹ߹Θͤͨઃܭ͕ඞཁ
    w 3&45Ͱ͸Ϧιʔεʹରͯ͠$36%ૢ࡞Λఆٛ͢Δͷ͕جຊ
    w (SBQI2-Ͱ΋ͦΕ͸ಉ͚ͩ͡Ͳɺ೉͘͠ײ͡Δͱࢥ͏
    w ࢓༷ͱͯ͠ఆٛ͞Ε͍ͯΔ΋ͷͰ͸ͳ͍͕ఆੴ͕͋Δ
    w ఆੴʹै͏ͱΫϥΠΞϯτʹͱͬͯ౎߹͕͍͍
33. Ϧιʔεͷൃݟ w Ϧιʔεͷൃݟ͕ελʔτ஍఺
    w 3&45ͱಉ͡
    w Ϧιʔε͸ΦϒδΣΫτܕͰදݱ
    w αʔόʔͷ಺෦࣮૷ͱ෼͚ͯߟ͑Δ
    w υϝΠϯϞσϧʹै͏ type Blog { id: ID! name: String! } type Post { id: ID! title: String! body: String! }
34. άϥϑߏ଄Λ࡞Δ ؔ࿈͢ΔϦιʔεΛϑΟʔϧυͰḷΕΔΑ͏ʹ͢Δ type Author { id: ID! name: String! } type Post { id: ID! title: String! authorId: ID! } type Author { id: ID! name: String! } type Post { id: ID! title: String! author: Author! }
35. άϥϑߏ଄Λ࡞Δ ؔ࿈͢ΔϦιʔεΛϑΟʔϧυͰḷΕΔΑ͏ʹ͢Δ type Query { posts( blogId: ID!, page: Int! ): [Post!]! } type Blog { posts(page: Int!): [Post!]! } type Query { blog(id: ID!): Blog! }
36. (SBQI2-ͷػೳΛ׆͔͢ w ྻڍܕ͕࢖͑Δͱ͜ΖͰ͸ੵۃతʹ࢖͏
    w ΠϯλʔϑΣʔε΍ϢχΦϯܕ͕͏·͘࢖͑Δͱ͜Ζ͕͋Ε͹࢖͏
    w /PO/VMMܕʹ͢΂͖ͱ͜ΖΛܾΊΔ
37. ΠϯλʔϑΣʔεΛ࢖ͬͨઃܭ 6($αΠτͰϢʔβʔΛෳ਺ͷܕͰදݱͨ͠ࣄྫ w ΞΫηε͖͍ͯͯ͠Δਓ͸7JTJUPSܕ
    w ౤ߘऀ͸6TFSܕ
    w ͲͪΒ΋"VUIPSΠϯλʔϑΣʔεΛ࣮૷
    w 8PSLܕͷBVUIPSϑΟʔϧυ͸"VUIPSΛฦ͢
    w ࣗ෼ͷ࡞඼ͳΒ7JTJUPSܕʹͳ͍ͬͯΔ
38. /PO/VMMܕΛͲΕ͘Β͍࢖͏΂͖͔ ;ͨͭͷελϯε͕͋Δ w ՄೳͳݶΓ/PO/VMMܕΛ࢖͏
    w υϝΠϯϞσϧʹ߹Θͤͯ/PO/VMMܕΛͪΌΜͱ࢖͏
    w OVMMΛڐ͢ͷ͸υϝΠϯϞσϧ্OVMM͕ҙຯΛ࣋ͭ৔߹͚ͩ
    w ཁॴཁॴͰOVMMΛڐ༰͢Δ
    w ෼ࢄγεςϜͷҰ෦͕ো֐Λى͍ͯ͜͠Δͱ͖ʹඋ͑Δ
    w શମΛΤϥʔʹ͢ΔΑΓҰ෦ΛOVMMʹͯ͠ฦ͢
39. 7JFXFS (SBQI2-ʹΞΫηε͖ͯͨ͠ར༻ऀΛࢦ͢γϣʔτΧοτ w ༻ҙ͓ͯ͘͠ͱศར
    w ΫϥΠΞϯτϥΠϒϥϦʹΑͬͯ͸
    w Query.viewerΛಛผѻ͍͢Δ type Viewer { name: String! } type Query { viewer: Viewer }
40. /PEFΠϯλʔϑΣʔε ࠶औಘՄೳͳϦιʔε w JEͰࣝผՄೳͰ͋Δ͜ͱΛظ଴
    w άϩʔόϧʹҰҙ
    w *Eͷ஋ͰΫΤϦͰ͖Δ
    w ΫϥΠΞϯτϥΠϒϥϦʹΑͬͯ͸
    w JEΛ࢖ͬͯΩϟογϡΛਖ਼نԽ͢Δ interface Node { id: ID! } type Query { node(id: ID!): Node }
41. ࠶औಘ͕ͳͥॏཁͳͷ͔ ҰཡͱύʔϚϦϯΫ w ҰཡͰ͸λΠτϧ͚ͩΛදࣔ
    w ύʔϚϦϯΫͰ͸ຊจ΋දࣔ
    w JE͕͋Ε͹࠶औಘͰ͖Δ query GetPostList { posts { id title } } query GetPost($id: ID!) { post(id: $id) { id title body } }
42. ࠶औಘ͕ͳͥॏཁͳͷ͔ ϖʔδωʔγϣϯ w ϖʔδ໨Ҏ߱Λऔಘ͢Δͱ͖ type Blog { id: ID! posts(page: Int!): [Post!]! } query { blog(id: "1") { id posts(page: 1) { id } } }
43. /PEFΠϯλʔϑΣʔε ࠶औಘՄೳͳϦιʔεΛҰൠԽͨ͠΋ͷ w 3FMBZ༝དྷ
    w ύʔϚϦϯΫΛ࣋ͭΑ͏ͳϦιʔε
    w JEͷ஋͸యܕతʹ͸
    w CBTF ܕ໊ϓϥΠϚϦΩʔ
    w αʔόʔͰ͸ܕ໊ͰॲཧΛ෼͚Δ
    w ΫϥΠΞϯτ͸PQBRVFʹѻ͏ interface Node { id: ID! } type Post implements Node { id: ID! }
44. $POOFDUJPO ϖʔδωʔγϣϯͷந৅Խ w 3FMBZ༝དྷ
    w ΧʔιϧΛ࢖ͬͨϖʔδωʔγϣϯ
    w ΫϥΠΞϯτϥΠϒϥϦʹΑͬͯ͸
    w ࣗಈతʹϖʔδωʔγϣϯͰ͖Δ type PageInfo { hasNextPage: Boolean! hasPreviousPage: Boolean! startCursor: String endCursor: String } type PostEdge { cursor: String! node: Post! } type PostConnection { pageInfo: PageInfo! edges: [PostEdge!]! } type Blog { posts(first: Int!, after: String): PostConnection! }
45. ϖʔδωʔγϣϯ w جຊ͸Χʔιϧϕʔεͷϖʔδωʔγϣϯ
    w ϖʔδωʔγϣϯ͢ΔϑΟʔϧυΛ࣋ͭΦϒδΣΫτ͕࠶औಘՄೳ͔͕ॏཁ
    w 2VFSZɺ7JFXFSɺ/PEF
    w ͳΜͰ΋ϖʔδωʔγϣϯ͠ͳ͍͍ͯ͘
    w ཁૉ͕ݸఔ౓ʹऩ·Δͱܾ·͍ͬͯͨΒϦετܕΛબͿ
46. 3FMBZͷ(SBQI2-
    4FSWFS
    4QFDJGJDBUJPO $POWFOUJPO
    PWFS
    $PO fi HVSBUJPO w 3FMBZ͸'BDFCPPL੡ͷ(SBQI2-ΫϥΠΞϯτϥΠϒϥϦ
    w αʔόʔʹ௥Ճͷ࢓༷Λཁٻ͢Δ
    w ΦϒδΣΫτͷ࠶औಘ
    Š
    /PEF
    w ϖʔδωʔγϣϯ
    Š
    $POOFDUJPO
    w 3FMBZΛ࢖Θͳ͍ͳΒै͏ඞཁ͸ͳ͍͕ɺ฿͓͍ͬͯͯଛ͸ͳ͍
    w ͍ͣΕ΋Ұൠతͳ՝୊ͳͷͰ
47. .VUBUJPO͸Ϧιʔεͷ$6%͔Β͸͡ΊΔ w DSFBUF3FTPVSDF
    w VQEBUF3FTPVSDF
    w EFMFUF3FTPVSDF
    w ҙຯ͝ͱʹ෼ׂͯ͠΋͍͍
    w େ͖͘ͳΓ͗͢ͳ͍Α͏ʹ type Mutation { createPost( input: PostInput!): Post! updatePost( id: ID!, input: PostInput!): Post! deletePost(id: ID!): ID! createDraftPost( input: PostInput!): Post! publishPost(id: ID!): Post! }
48. .VUBUJPOͷύϥϝʔλͱ໭Γ஋ w ύϥϝʔλ͸ΠϯϓοτܕΛ࢖͏
    w ࣅͨߏ଄ʹͳΔͳΒڞ༗͢Δ
    w ฦΓ஋͸/PEF͔*%Λ࢖͏
    w DSFBUFͱVQEBUFͰ͸/PEFΛฦ͢
    w EFMFUFͰ͸*%Λฦ͢ input PostInput { title: String! body: String! } type Mutation { createPost( input: PostInput!): Post! updatePost( id: ID!, input: PostInput!): Post! deletePost(id: ID!): ID! }
49. (SBQI2-ͷεΩʔϚઃܭ w ઌਓͷ஌ܙʹֶͿ
    w ఆੴʹै͏
    w (JU)VCͷ(SBQI2-
    "1*ͳͲΛࢀߟʹ͢Δ
    w IUUQTHJUIVCDPN4IPQJGZHSBQIRMEFTJHOUVUPSJBM
    w ࠷ऴతʹ͸໨తΛୡ੒Ͱ͖Δ͔͕Ұ൪ॏཁ
    w ΫϥΠΞϯτʹͱͬͯ౎߹ͷ͍͍"1*͕͍͍"1*
50. $PEFGJSTU͔4DIFNBGJSTU͔
51. ίʔυϑΝʔετͱεΩʔϚϑΝʔετ (SBQI2-εΩʔϚͷ4PVSDFPG5SVUI͕Ͳ͔͜ w (SBQI2-
    "1*Λ࡞Δͱ͖ʹ࠷ॳʹ൑அ͢Δ͜ͱ
    w ϥΠϒϥϦʹΑͬͯҧ͏
    w ίʔυʹΑͬͯεΩʔϚ͕ܾ·ΔͳΒίʔυϑΝʔετ
    w HSBQIRMSVCZ͸جຊతʹ͸ͬͪ͜
    w εΩʔϚΛ࡞ͬͯͦΕʹ߹ΘͤͯίʔυΛॻ͘ͳΒεΩʔϚϑΝʔετ
52. ίʔυϑΝʔετͷ͍͍ͱ͜Ζ w ίʔυͱεΩʔϚͷରԠ͕औΓ΍͍͢
    w ϓϩάϥϛϯάݴޠͷػೳΛ׆͔͠΍͍͢
    w ίʔυͷ࠶ར༻
    w ϞδϡʔϧԽ
53. εΩʔϚϑΝʔετͷ͍͍ͱ͜Ζ w εΩʔϚத৺ʹͳΔ
    w εΩʔϚʹ͍ͭͯٞ࿦͠΍͍͢
    w ҙਤͤͣඇޓ׵ͳมߋΛߦ͏ͷΛ๷͛Δ
54. ίʔυϑΝʔετ͔εΩʔϚϑΝʔετ͔ ݁ہͲͪΒ͕͍͍ͷ͔ w εΩʔϚϑΝʔετͷํ͕ࣗવͳϑϩʔͰ͸͋Δ
    w εΩʔϚϑΝʔετ͕ྲྀߦ͕ͬͨίʔυϑΝʔετ΁ͷ༳Γ໭͕͋͠Δ
    w ͓͢͢Ί͸
    w εΩʔϚ͔Βίʔυੜ੒͢ΔʢHRMHFOͳͲʣ
    w ίʔυ͔ΒεΩʔϚΛੜ੒ͯ͠ίϛοτ͢Δ
    w ͍ͣΕʹͯ͠΋εΩʔϚʹ͍ͭͯαʔόʔɾΫϥΠΞϯτؒͷٞ࿦͕ॏཁ
55. ίʔυϑΝʔετͰεΩʔϚΛग़ྗ͢Δ w εΩʔϚΛμϯϓ͢Δ
    w εΩʔϚ͸ϦϙδτϦʹೖΕΔ
    w εΩʔϚͷมߋ͸ϨϏϡʔ͢Δ
    w ࠷৽ͷεΩʔϚ͕ग़ྗ͞Ε͍ͯΔ͔͸ςετͰ୲อ
    w IUUQTHSBQIRMSVCZPSHUFTUJOHTDIFNB@TUSVDUVSFIUNM # lib/tasks/graphql.rake task dump_schema: :environment do schema_defn = GraphqlRubyExerciseSchema.to_definition schema_path = "app/graphql/schema.graphql" File.write(Rails.root.join(schema_path), schema_defn) puts "Updated #{ schema_path}" end
56. (SBQI2-
    "1*Λ࣮૷͢Δ
57. (SBQI2-
    "1*ͷ࣮૷ w HSBQIRMSVCZΛ࢖͏
    w ϥΠϒϥϦͷυΩϡϝϯτʹै͏
58. ͻͱ·ͣΦϒδΣΫτܕΛ࡞Δ w ΦϒδΣΫτͱϑΟʔϧυ͕ॏཁ
    w %#্ͷߏ଄ʹ߹ΘͤΔඞཁ͸ͳ͍
    w HSBQIRMSVCZͰ͸
    $ rails g graphql:object Model w "DUJWF
    3FDPSEͷϞσϧͷ৘ใ͕ࣗಈతʹ࢖ΘΕΔ
    w ϛεϦʔσΟϯάͰ͸͋Δ module Types class UserType < Types :: BaseObject field :name, String, null: false end end
59. جຊతʹ͸ϦκϧόΛॻ͚͹͍͍ Ϧκϧό˺ίϯτϩʔϥ w ϑΟʔϧυΛղܾ͢Δͷ͕Ϧκϧό
    w (SBQI2-ʹಛ༗ͷॲཧΛॻ͘
    w HSBQIRMSVCZͰ͸
    w ϑΟʔϧυͱಉ໊ͷϝιου module Types class QueryType < Types :: BaseObject include GraphQL :: Types :: Relay : : HasNodeField include GraphQL :: Types :: Relay : : HasNodesField field :all_blogs, BlogType.connection_type def all_blogs Blog.all.order(id: :desc) end end end
60. Ϧκϧό͸ωετ͢Δ w ϦκϧόͰಘΒΕͨΦϒδΣΫτ͕ 
 ·ͨϦκϧόΛ࣋ͭ
    w 2VFSZˠ#MPHˠ1PTU
    w ศར
    w / ໰୊ͷԹচʜʜ module Types class BlogType < Types :: BaseObject implements GraphQL :: Types : : Relay :: Node global_id_field :id field :owner, UserType, null: false def owner object.owner end field :name, String, null: false field :posts, PostType.connection_type do end def posts object.posts.order(datetime: :desc) end end end
61. ϦκϧόΛॻ͘ͱ͖ͷࢦ਑ w ΫΤϦͷϦκϧό͸ݺͼग़͞ΕΔॱং͕ෆఆͰ͋ΔલఏΛஔ͘
    w ϥΠϒϥϦʹΑͬͯ͸ฒྻʹ࣮ߦ͞ΕΔՄೳੑ͕͋Δ
    w ෭࡞༻͕ͳ͍Α͏ʹ
    w ϛϡʔςʔγϣϯ͸ॻ͍ͨॱʹ࣮ߦ͞ΕΔͷͰؾʹ͠ͳ͍
    w ϦκϧόʹϏδωεϩδοΫΛॻ͔ͳ͍
    w ϏδωεϩδοΫ͸Ϟσϧʹॻ͘
62. ΠϯλʔϑΣʔε΍ϢχΦϯΛฦ͢ͱ͖͸஫ҙ ΦϒδΣΫτͱܕͷରԠΛࣔ͢ඞཁ͕͋Δ w ΠϯλʔϑΣʔεͱͯ͠ฦ͢ͱ͖ 
 ࣮ࡍʹ͸Ͳͷܕ͔ϥΠϒϥϦʹ఻͑Δ
    w HSBQIRMSVCZͰ͸
    w Schema.resolve_type def self.resolve_type(abstract_type, obj, ctx) case obj when User Types :: UserType when Blog Types :: BlogType when Post Types :: PostType else raise(GraphQL :: RequiredImplementationMissingError) end end
63. 3FMBZʹରԠͤ͞Δ HSBQIRMSVCZ͕͍͍ͩͨ΍ͬͯ͘ΕΔ $ rails generate \ graphql:install - - relay w (MPCBM*%Λར༻ͨ͠/PEFͷ࣮૷ def self.id_from_object(object, type_definition, query_ctx) object_id = object.to_global_id.to_s object_id = object_id.sub("gid: //#{ GlobalID.app}/", "") encoded_id = Base64.urlsafe_encode64(object_id) encoded_id = encoded_id.sub( /= +/, "") type_hint = type_definition.graphql_name.first " #{ type_hint}_ # { encoded_id}" end def self.object_from_id(encoded_id_with_hint, query_ctx) _type_hint, encoded_id = encoded_id_with_hint.split("_", 2) id = Base64.urlsafe_decode64(encoded_id) full_global_id = "gid: //#{ GlobalID.app}/ #{ id}" GlobalID :: Locator.locate(full_global_id) end
64. 3FMBZʹରԠͤ͞Δ /PEFΠϯλʔϑΣʔε • GraphQL :: Types :: Relay : : Node w HMPCBM@JE@ fi FMEΛࢦఆ module Types class UserType < Types :: BaseObject implements GraphQL :: Types :: Relay :: Node global_id_field :id field :name, String, null: false end end
65. 3FMBZʹରԠͤ͞Δ $POOFDUJPO w connection_type
    w ಺෦తʹP ff TFUϕʔεʹͳ͍ͬͯΔ module Types class QueryType < Types :: BaseObject field :all_blogs, BlogType.connection_type def all_blogs Blog.all.order(id: :desc) end end end
66. ίϯςΩετΛ࢖͏ ϦΫΤετʹඥ͍ͮͨσʔλ͸ίϯςΩετʹ֨ೲ͢Δ w ϩάΠϯϢʔβʔͳͲ
    w ΫΤϦΛ࣮ߦ͢ΔίϯτϩʔϥʔͰ 
 ίϯςΩετΛ࡞Δ def execute variables = prepare_variables(params[:variables]) query = params[:query] operation_name = params[:operationName] context = { # Query context goes here, for example: # current_user: current_user, } result = GraphqlRubyExerciseSchema.execute( query, variables: variables, context: context, operation_name: operation_name ) render json: result rescue StandardError = > e raise e unless Rails.env.development? handle_error_in_development(e) end
67. (SBQIJ2-Λ࢖͏ (SBQI2-
    *%& $ rails generate graphql:install w HSBQIRMSVCZͰ͸
    w /graphiqlʹࣗಈͰηοτΞοϓ͞ΕΔ
    w 3BJMT͕"1*Ϟʔυͷ৔߹͸ηοτΞοϓ͞Εͳ͍
    w ผʹ༻ҙ͢Δͱศར
68. (SBQI2-
    "1*࣮૷্ͷཹҙ఺
69. / ໰୊ w BVUIPSͷϦκϧόΛφΠʔϒʹ࣮૷
    w 1PTUͷ਺͚ͩ4&-&$5
    SELECT * FROM author WHERE id = ?; type Author { id: ID! name: String! } type Post { id: ID! title: String! author: Author! } type Query { allPosts(first: Int!, after: String): PostConnection! }
70. / ໰୊ରࡦ σʔλϩʔμʔΛ࢖͏ w ಡΈࠐΈΛ஗Ԇͤ͞Δ࢓૊Έ
    SELECT * FROM author WHERE id IN (?, ?, ?); w HSBQIRMSVCZͰ͸
    w GraphQL :: DataloaderΛ࢖͏ class Sources : : ActiveRecordObject < GraphQL : : Dataloader :: Source def initialize(model_class) @model_class = model_class end def fetch(ids) records = @model_class.where(id: ids) ids.map { |id| records.find { |r| r.id = = id.to_i } } end end field :author, UserType, null: false def author dataloader .with(Sources :: ActiveRecordObject, :: User) .load(object.author_id) end
71. %P4߈ܸ w ෳࡶͳΫΤϦͰ%P4߈ܸͰ͖Δ
    w ಛʹ࠶ؼతͳεΩʔϚͰ͸༰қ
    w #MPHˠ1PTUˠ#MPHˠ1PTUˠʜ query { blog(id: "1") { posts(first: 100) { edges { node { blog { posts(first: 100) { edges { node { . . . } } } } } } } } }
72. %P4߈ܸରࡦ ΫΤϦ౰ͨΓͷॲཧྔΛ੍໿͢Δ w λΠϜΞ΢τͤ͞Δʢuse GraphQL : : Schema : : Timeout, max_seconds: 2ʣ
    w ΫΤϦͷ"45ͷ࣌఺Ͱ੍໿
    w ਂ੍͞ݶʢmax_depth 10ʣ
    w ෳࡶ͞Ͱ੍ݶʢmax_complexity 100ʣ
    w Ϩʔτ੍ݶ
    w (JU)VC͸࣌ؒ౰ͨΓͷෳࡶ͞ͷείΞͰ੍ݶ͍ͯ͠Δ
73. ඇެ։"1*ͳΒ ΫϥΠΞϯτͷ։ൃऀ͕ΠϯαΠμʔʹݶΒΕΔͳΒ w ϓϩμΫγϣϯͰ͸*OTUSPTQFDUJPOΛ௵͢
    w 1FSTJTUFE
    2VFSZΛ࢖͏
74. ϓϩμΫγϣϯͰ͸*OUSPTQFDUJPOΛ௵͢ εΩʔϚ৘ใΛ஌ΒΕʹ͘͘͢Δ w *OUSPTQFDUJPO͸(SBQI2-ͷεΩʔϚ৘ใΛऔಘ͢ΔಛผͳΫΤϦ
    w ࢓༷ͰఆΊΒΕ͍ͯΔ
    w ֎෦͔ΒεΩʔϚ৘ใ͕ಘΒΕΔʢ(SBQIJ2-ͳͲͰ׆༻͞ΕΔʣ
    w ϓϩμΫγϣϯ؀ڥͰ͸*OUSPTQFDUJPOͰ͖ͳ͓ͯ͘͘͠
    • disable_introspection_entry_points if Rails.env.production? w εΩʔϚ৘ใ͕ਪଌͰ͖ͳ͘ͳΔΘ͚Ͱ͸ͳ͍͜ͱʹ஫ҙ
75. 1FSTJTUFE
    2VFSZΛ࢖͏ ҙਤ͠ͳ͍ΫΤϦΛड͚෇͚ͳ͍ w ΫϥΠΞϯτ͕ૹ৴͢ΔΫΤϦΛϋογϡ஋ͱ૊Ͱαʔόʔʹొ࿥͓ͯ͘͠
    w ΫϥΠΞϯτ͔Β͸࣮ࡍͷΫΤϦͷ୅ΘΓʹϋογϡ஋ΛૹΔ
    w ΫΤϦͷ಺༰Λ஌ΒΕͣʹࡁΉ
    w ࣄલʹొ࿥͞Ε͍ͯͳ͍ΫΤϦΛ๷͛Δ
    • GraphQL :: Pro : : OperationStore w ΫϥΠΞϯτϥΠϒϥϦͷ΄ͱΜͲ͕ରԠ͍ͯ͠Δ
76. ΦϒβʔόϏϦςΟͷ௿Լ w (SBQI2-͸୯ҰͷΤϯυϙΠϯτΛ࢖͏
    w POST /graphql w 3&45͸Ϧιʔε΍ॲཧ͝ͱʹΤϯυϙΠϯτ͕෼͔Ε͍ͯͨ
    w (SBQI2-ͷ৔߹͸ΞΫηεϩάͰ͸৘ใ͕଍Γͳ͍
    w ฏۉͷϨΠςϯγ΍Τϥʔ཰Λݟͯ΋Կ͕ى͖͍ͯΔ͔Θ͔Βͳ͍
77. ΦϒβʔόϏϦςΟΛ֬อ͢Δ w τϨʔγϯά͢Δ
    w Ϧκϧόͷݺͼग़͠΍*0Λه࿥
    • GraphQL :: Tracing
78. ஗͗͢Δ(SBQI2-
    "1*ࣄ݅ w 1ZUIPOͰ(SBQI2-
    "1*Λ࡞͍͕ͬͯͨ૝ఆΑΓ஗͍෦෼͕͋ͬͨ
    w ϓϩϑΝΠϦϯά͍ͯ͘͠ͱɺ$16͕ϘτϧωοΫ
    w +40/ʹγϦΞϥΠζ͢Δͱ͜Ζ͕஗͔ͬͨ
    w ཁૉ͕ଟ͔ͬͨΓωετ͕ਂ͔ͬͨΓ͢ΔͱϑΟʔϧυ਺͕ଟ͘ͳΔ
    w +*5ίϯύΠϧͰ͖ͨΒ଎͘ͳΓͦ͏ʁ
79. ·ͱΊ
80. (SBQI2- w ཁٻ͞ΕΔ஌ࣝͷྔ͕ଟΊ
    w ϦονͳΫϥΠΞϯτ޲͚ͷ8FC
    "1*ʹ͸ͦΕ͚ͩͷ͜ͱ͕ඞཁ
    w 8FC
    "1*ʹඞཁͳϓϥΫςΟε͕͢΂ͯ٧·͍ͬͯΔ
    w ͭ·Γʜ
    w (SBQI2-͸Ϩʔϧ
    w HSBQIRMSVCZ͸Α͘Ͱ͖͍ͯΔ