Flux/Reduxって何？雑に作ってみよう / easy creation of flux

by erukiti

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Flux/ReduxͬͯԿʁ ࡶʹ࡞ͬͯΈΑ͏ erukiti

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erukiti (͑Δ͖ͪ) • ES2016େ޷͖ (ES5Ҏલ͸ΨϯແࢹελΠϧ) • ͍ͨͩ·ٳཆத • Switchങ͍·ͨ͠ (θϧμ125࣌ؒҎ্ɺϚϦ ΦΧʔτ15࣌ؒҎ্ϓϨΠ)

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ٕज़ॻయ2Ͱຊͩ͠·ͨ͠ • ٕज़ॻయ2࠷ߴͰͨ͠ɻ • Impress R&D͞·Ͱ঎ۀԽ ͷ࡞ۀ͕ਐߦதͰ͢ɻ ๻ͷਐḿ͸χϟΦεͰ͢ɻ https://tk-rabbit-house.booth.pm/items/489874

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ࠓ೔ͷ಺༰ • Reactʹ෇͖΋ͷͷFlux/Reduxͱ͸Կ͔ • FluxΛ؆୯ʹ࡞Δ

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Flux΍ReduxͬͯԿʁ

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Flux͸σβΠϯύλʔϯ • σʔλϑϩʔΛҰํ௨ߦʹ͢Δͱ͍͏σβΠ ϯύλʔϯ • Facebook͕ࣾಉ໊͡લͷϥΠϒϥϦ࡞ͬͯΔ • ObserverύλʔϯͱCommandύλʔϯͷ૊ Έ߹Θͤ ฆΒΘ͍͠

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͜ΜͳਤΛݟͨ͜ͱ͋Γ·͔͢ʁ Action Dispatcher Store View Action

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ActionΛ౤͛Δ(dispatch͢Δ)

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ঢ়ଶ؅ཧ͸Storeͷ͠͝ͱ • Store͸ΞϓϦͷঢ়ଶ(State)Λ࣋ͭ • ౤͛ΒΕͨActionΛreducerͰঢ়ଶΛߋ৽ • ߋ৽ͨ͠ΒViewʹ௨஌Λඈ͹͢

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View͸γϯϓϧʹ • Store͔Βͷߋ৽௨஌Ͱඳը (Observer) • Ϣʔβʔ͔Βͷೖྗ͸ActionΛdispatch͢Δ • ࣮͸View͸ReactҎ֎Ͱ΋OK

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͓͞Β͍ Action Dispatcher Store View Action

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Կ͕͏Ε͍͠ͷʁ • σʔλͷྲྀΕ͕୯७Խ͢Δ • ੹຿Λ໌֬ʹ෼͚ΒΕΔ (༨஍͕͋Δ) • ͦΕΒʹΑͬͯૄ݁߹ʹͰ͖Δ

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Redux? Action Store View Action

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ReduxͱFluxͷҧ͍ • FluxͰ͸Dispatcher͸γϯάϧτϯͰStore͸ ෳ਺࣋ͯΔ • ͦΕͳΒStoreΛγϯάϧτϯʹ͢Ε͹ Dispatcher͍Βͳ͍ࢠͳͷͰ͸ʁ • ͱ͍͏ׂΓ੾ΓΛ࣮ͨ͠૷͕Redux

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FluxΛ࡞ͬͯΈΔ

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ϕʔεͱͳΔReact Component

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Storeͷ໾ׂ • ঢ়ଶͷอ࣋ͱมߋ • มߋͨ͠Β௨஌Λඈ͹͢

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reducer͸ϏδωεϩδοΫ • reducer͸ActionΛݩʹStateΛมߋ͢Δํ๏ ͚ͩΛهͨ͠΋ͷ • stateʹॳظ஋ΛೖΕͯΔͷ͸Reduxͷ΍Γํ

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React ComponentΛมߋ͢Δ

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·ͩsetState͕࢒ͬͯΔ݅ • Store࡞ͬͯdispatch࣮૷͚ͨ͠Ͳɺ·ͩ setState͕࢒ͬͯ͠·͍ͬͯΔɻ • Ͳ͏ͤFluxಋೖ͢ΔΜ͔ͩΒprops͚ͩ࢖͍ͨ ͍ • Ͳ͏͢Ε͹propsΛߋ৽(?)Ͱ͖Δͷ͔ʁ

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propsΛߋ৽(?)͢Δํ๏ 1. react-domͷrenderΛ໌ࣔతʹୟ͘ 2. ର৅ͷComponentΛߋ৽͢ΔͨΊͷϥο ύʔΛ࡞Δ (react-reduxํࣜ) ΄͔ʹ΋΍Γํ͋Δ͔΋ʁ

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Θʔ͍ɺͨʔͷ͠ʔ

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՝୊ • ࡶʹ࡞ͬͨ΍ͭͳͷͰɺ͋ͱͪΐͬͱ࢓૊Έ ΛՃ͑ͳ͍ͱϥΠϒϥϦԽͰ͖ͳ͍ɻ • ReduxͰ΋ͦ͏͚ͩͲɺඇಉظॲཧΛͲ͜ʹ ஔ͘ͷʁ໰୊

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·ͱΊ • Modern JavaScript ͍ͨͩ·boothͰൃചதͰ ͢ɻ঎ۀ൛͕ਐߦதͰ͢ɻ • Flux͸ΞϓϦΛγϯϓϧʹ͢ΔͨΊͷσβΠϯ ύλʔϯ (ͳͷͰɺReactҎ֎ʹ΋࢖͑Δ) • Flux͸؆୯ʹ࡞ΕΔ https://tk-rabbit-house.booth.pm/items/489874

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͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ