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Scotty + Aeson + Persistentで作るJSON Web API
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Fujimura Daisuke
July 07, 2012
Programming
12
9.7k
Scotty + Aeson + Persistentで作るJSON Web API
Fujimura Daisuke
July 07, 2012
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Transcript
Scotty + Aeson + PersistentͰ࡞ΔJSON Web API גࣜձࣾAiming ౻ଜେհ @
Yesodษڧձୈ2ճ, 2012-07-07
ࣗݾհ • ౻ଜେհ • http://fujimuradaisuke.com @ffu_ • גࣜձࣾAimingॴଐ • Haskell͖ͷRuby
on RailsϓϩάϥϚʔ • ࠷ۙJavaScript/CoffeeScriptΑ͘ॻ͍͍ͯΔ • ΞδΞͷྉཧͱΞϝϦΧͷϏʔϧɺΞϧβεͷϫΠϯ͕͖ • ϥςϯΞϝϦΧจֶ͖
ͱ͜ΖͰɺͳͥࠓJSON Web APIͳͷ͔ • ͳΜ͔ͩ࠷ۙJSON Web APIΛ࡞Δػձ͕ଟ͍ • ҰͭͷΞϓϦέʔγϣϯΛෳΫϥΠΞϯτͰಈ͔͢ࣄྫ͕૿͖͑ͯͨ •
Mobile, PC, iOS/Android Nativeશ෦ʹల։ͱ͔ • ϑϩϯτΤϯυͰUIΛߏங͢Δٕज़ͷൃୡɾਁಁ • ΫϥΠΞϯτɾαʔόʔͷۀਐΈͦ͏
ಥવͰ͕͢Yesod͍·͍ͪͩͱࢥ͏ • ࠷ۙWebσβΠϯ/ϑϩϯτΤϯυ։ൃ͕Ұஈͱ͘͠ͳ͖ͬͯͨؾ͕͢Δ • ͳͷͰΫϥΠΞϯτʗαʔόʔͰۀ͕Ͱ͖ͳ͍ͱݫ͍͠ • Έͳ͞ΜHamletͱCassiusͰϓϩμΫγϣϯϨϕϧͷϨεϙϯγϒͳϚʔΫ ΞοϓͰ͖·͔͢ʁ • Α͏͘sass/less͕ਁಁ͖ͯͨ͠ͷʹ·ͨ৽͍ٕ͠ज़Λ…
• ͔͠΄ͱΜͲҰॹͩ͠… • Web APIͱͯ͠͏ͱͳΔͱϑϧελοΫͷ͕ա͗Δ • ͳͥ͏༧ఆͷͳ͍ೝূϥΠϒϥϦͷΠϯετʔϧΛٻΊΒΕΔͷ͔
ͦ͜ͰWeb APIscottyͰ࡞Ζ͏Ͱͳ͍͔ • Web API࡞ΓDBΞΫηεͱϧʔςΟϯά͑͞Ͱ͖ΕجຊOK • ྫ͑RubyͩͱWeb API࡞Δ࣌RailsͰͳ͘sinatraͬͯͷΑ͋͘Δ • ϥΠϒϥϦͷґଘؔগͳ͍΄͏͕Կ͔ͱͤ
• DBpersistentɺJSONaesonͰͬͯΈΑ͏
scottyʹ͍ͭͯ • RubyͷsinatraΠϯεύΠΞͷWeb Application Framework • https://github.com/xich/scotty/ • γϯϓϧͳAPI •
Yesodͱಉ͘͡waiϕʔε
aesonʹ͍ͭͯ • Real World HaskellͷஶऀɺBryan O'Sullivan͞Μͷ࡞ͬͨJSONϥΠϒϥϦ • https://github.com/bos/aeson • ·ΔͰJSONͷΑ͏ͳߏจͰॻ͚ΔDSL(?)͕େมศར
• ͍Β͍͠
persistentʹ͍ͭͯ • ͝ଘYesodಉࠝͷORM • (͔͠͠ɺ”Object”ʹϚοϐϯά͞ΕͯΔؾશ͘ແ͍ʣ • http://www.yesodweb.com/book/persistent • PostgreSQL, SQLite,
MongoDB, MySQLʹରԠ • QuasiQuoteͰςʔϒϧఆٛɺϚΠάϨʔγϣϯ͋Δ • ܕνΣοΫ͖ͷSQLͬͯײ͡Ͱ͍͍͢
Ͱ͖·ͨ͠ • ͔݁Βݴ͏ͱͱͯͤͳΈ߹ΘͤͰͨ͠
persistentͱaesonͷ૬ੑ͕͢Β͔ͬͨ͠(1) • ςʔϒϧఆٛͨ͠ΒɺͦΕΛToJSON/FromJSONͷΠϯελϯεʹ͢Δ
persistentͱaesonͷ૬ੑ͕͢Β͔ͬͨ͠(2) • ͢ΔͱɺDBͷߦΛJSONͱͯ͠ѻ͑Δ(ToJSONͷΠϯελϯεʹͳΔͷͰʣ • ͳͷͰɺscottyͰͦͷ··JSONϨεϙϯεͱͯ͠ฦͤΔ
persistentͱaesonͷ૬ੑ͕͢Β͔ͬͨ͠(3) • ࠓςʔϒϧͱಉ͡εΩʔϚͷJSONΛPOST͢Δͱɺ • ͦͷ··ߦͱͯ͠DBʹೖΕΒΕΔʢFromJSONͷߦͱͯ͠ड͚औΕΔ͔Βʣ
͜Ε͔ͳΓΤϨΨϯτͳͷͰ • ͜ͷهड़ྔͰDB͔Βͷऔಘ/DBͷՃ͕Ͱ͖·͢ • ͍͢͝ʂ
ΩϥʔϥΠϒϥϦͷ༧ײ • ґଘ͕ؔগͳ͍ͷͰίϯύΠϧָ • ܕΫϥεΛ׆͔ͤΔ • Web APIͳΒHaskellͰΫϥΠΞϯτ։ൃͱͷڠಇͳ͠ • Ή͠ΖϥϯλΠϜΤϥʔ͕ແ͍ͷͰΫϥΠΞϯτ։ൃͤ
༨ஊ • ͪͳΈʹҐஔใܥͷWebαʔϏεΛ࡞Ζ͏ͱͯ͠·ͨ͠ • ΫϥΠΞϯτBackbone.js, CoffeeScriptɺGoogle Maps͋ͨΓΛར༻ • ࣮ࡍͷͱ͜ΖɺΫϥΠΞϯτͷίʔυΛॻ͍ͯΔํ͕͔ͬͨ… •
HTMLςϯϓϨʔτmustacheΛͬͨɻ͜Εྑ͔ͬͨ • ·ͩෳࡶͳ͜ͱΛͬͯͳ͍ͷͰɺམͱ͕݀͋͠Γͦ͏ • ೝূ·ΘΓ·ͩະணखɻམͱ͔݀͜͜͠…ʁ • Template HaskellΛͬͨΒToJSON/FromJSONʹ͢ΔͷࣗಈͰͰ͖ͦ͏ͳ ؾ͕…
͓ΘΓ • ιʔείʔυ https://github.com/fujimura/spot • ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ