マネーフォワードの設計へのアプローチ

by koutalou

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ϚωʔϑΥϫʔυͷઃܭ΁ͷΞϓϩʔν CAMPFIRE iOS #1 2017/03/16 גࣜձࣾϚωʔϑΥϫʔυ ࣇۄ޹ଠ࿠

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ࣗಈՈܭ฽ɾࢿ࢈؅ཧαʔϏεʰϚωʔϑΥϫʔυʱ iOS, AndroidΞϓϦ։ൃΛ୲౰͍ͯ͠·͢ ࣇۄ޹ଠ࿠!LPVUBMPV ΤϯδχΞ ࣗݾ঺հ

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಺༰ 1 "SDIJUFDUVSFʹ͍ͭͯ 2 "SDIJUFDUVSFͷબఆ 3 $MFBO"SDIJUFDUVSF΁ͷऔΓ૊Έ

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1 2 "SDIJUFDUVSFͷબఆ 3 $MFBO"SDIJUFDUVSF΁ͷऔΓ૊Έ 2 3 "SDIJUFDUVSFʹ͍ͭͯ ಺༰

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طଘͷ"SDIJUFDUVSF .7$"SDIJUFDUVSF .71 .77. "SDIJUFDUVSF

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طଘͷ"SDIJUFDUVSF 7*1&3"SDIJUFDUVSF %%%"SDIJUFDUVSF

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$MFBO"SDIJUFDUVSF 7JFX 1SFTFOUFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ 1SFTFOUBUJPO-BZFS %PNBJO-BZFS %BUB-BZFS w ੹຿Λࡉ෼Խ͢Δ͜ͱͰɺ֤ϨΠϠ͕ԿΛ୲౰͢Δ͔໌֬ʹͳΔ w 6*ͱϏδωεϩδοΫΛ෼཭Ͱ͖ɺϨΠϠؒͷґଘΛ࠷খݶʹͰ͖Δ w ϨΠϠؒ͸ૄ݁߹ͳͷͰϞδϡʔϧͷஔ͖׵͑ɺςετ͕༰қ

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$MFBO"SDIJUFDUVSFͷ1SPT$POT ɹQSPT w ಛఆͷ-BZFSͷංେԽΛ๷͛Δ w ݴޠԽ͞Εͨఆ͕ٛ͋ΔͷͰڞ௨ͷઃܭҙ͕ࣝ࣋ͯΔ w ੹຿͕ࡉ෼Խ͞Ε͍ͯΔͷͰϝϯς͠΍͍͢  DPOT w ίʔυྔɺϑΝΠϧ਺͕ଟ͍ w ֶशίετ͕ߴ͍

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औΓ૊Έ "SDIJUFDUVSFʹ͍ͭͯ 2 "SDIJUFDUVSFͷબఆ $MFBO"SDIJUFDUVSF΁ͷऔΓ૊Έ 1 3

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Α͋͘ΔΞʔΩςΫνϟͷ໰୊ w ౓ॏͳΔ࢓༷มߋ΍ෳࡶͳ࢓༷ʹରԠ͢ΔͨΊʹ7JFX$POUSPMMFS΍  ಛఆͷ.PEFM͕ංେԽ͠ɺϏδωεϩδοΫͷຊ࣭Λݟࣦ͏ w ಛఆͷϨΠϠ͕ෳ਺ͷ੹຿Λ࣋ͪґଘ౓ͷߴ͍ෳࡶͳίʔυ͕ੜ·ΕΔ ΤϯδχΞ ΤϯδχΞ ΤϯδχΞ ͍͢͝࢓༷มߋͩɺɺ ·ͨViewController͕๲ΒΉ ϏδωεϩδοΫ͜Μͳ ॻ͖ํͪ͠Ό͏Μͩɾɾ Model͕͍ΖΜͳॲཧΛ ؚΊͯෳࡶ͗͢Δɾɾ → VIPER΍Clean ArchitectureΛݕ౼ͯ͠΋ྑ͍

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໰୊Λײ͍ͯ͡ͳ͍έʔε w গਓ਺Ͱن໛ͷখ͞ͳΞϓϦέʔγϣϯ͸ɺશ༰Λ೺Ѳ͠΍͍͢ w εϞʔϧελʔτͳͲͰ·ͣಈ͘΋ͷΛ࡞Γ͍ͨ w ϩδοΫ͕γϯϓϧͰಛʹෳࡶͳॲཧ͕ଘࡏ͠ͳ͍ ΤϯδχΞ ΤϯδχΞ ΤϯδχΞ ҰਓͰ։ൃ͢Δ͠ɺ ͦΜͳʹن໛΋େ͖͘ͳ͍ ͱʹ͔͘εϐʔυײॏࢹ ·ͣ͸ϞϊΛ࡞Γ͍ͨ ΞϓϦέʔγϣϯͷ ϩδοΫ͕ෳࡶͰ͸ͳ͍ → VIPER΍Clean Architecture͸޲͍͍ͯͳ͍

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"1*ʹΑΔෳࡶੑʹ͍ͭͯ ͭͷը໘Ͱෳ਺ͷ"1*͔ΒσʔλΛऔಘ͢Δ৔߹ɺ 7JFXͰ࢖͏.PEFM΁ม׵͕ඞཁʹͳΓϩδοΫ͸ෳࡶʹͳΓ͕ͪ "1* "1* "1* "1* "1* → Clean ArchitectureΛݕ౼ͯ͠΋ྑ͍

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ը໘"1*ͷΑ͏ͳ৔߹ɺ3FTQPOTF͕7JFXͷ.PEFMͱͯ͠ ࢖͑Δέʔε͕ଟ͍ͨΊϩδοΫ͸γϯϓϧʹͳΔ "1* "1* "1*ʹΑΔෳࡶੑʹ͍ͭͯ → Clean Architecture͸ෆ޲͖ɺVIPER͸ݕ౼ͯ͠΋ྑ͍

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"SDIJUFDUVSFͷબఆ w ௕ظతͳ։ൃɺϝϯςφϯε͕ඞཁ͔ w ୯ಠ։ൃ͔։ൃϝϯόʔ͸ଟ͘ྲྀಈత͔ w αʔόଆͷϦιʔε͕े෼Ͱ$MJFOU͸γϯϓϧʹͰ͖Δ͔ w $MJFOUଆͰෳࡶͳϩδοΫΛ࣋ͨ͟ΔΛಘͳ͍͔ ϓϩδΣΫτͷঢ়گ΍ϝϯόʔɺ αʔόଆ΋ؚΊͨશମͷγεςϜΛߟྀͯ͠  "SDIJUFDUVSFΛબఆ͢΂͖

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3 $MFBO"SDIJUFDUVSF΁ͷऔΓ૊Έ "SDIJUFDUVSFʹ͍ͭͯ 1 2 "SDIJUFDUVSFͷબఆ 2 ಺༰

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νʔϜͰ"SDIJUFDUVSFΛڞ༗ 7JFX 1SFTFOUFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ 1SFTFOUBUJPO-BZFS %PNBJO-BZFS %BUB-BZFS "QQMJDBUJPO-BZFS #VJMEFS 8JSFGSBNF νʔϜͰݴޠԽ͞Εͨఆ͕ٛ͋Δ͜ͱ͕ॏཁ ఆ͕ٛͳ͍ͱɺ։ൃऀʹΑͬͯཧղ΍ҙݟ͕όϥόϥʹͳͬͯ͠·͏

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࣮૷ํ਑ 1SFTFOUBUJPO %PNBJO %BUB-BZFS͸શͯQSPUPDPMΛఆٛ "QQMJDBUJPO-BZFSͰ*NQMFNFOUBUJPOΛ%*͢Δ 7JFX 1SFTFOUFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ 1SFTFOUBUJPO-BZFS %PNBJO-BZFS %BUB-BZFS "QQMJDBUJPO-BZFS #VJMEFS 8JSFGSBNF

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࣮૷ํ਑ 1SFTFOUBUJPO %PNBJO %BUB-BZFS͸શͯQSPUPDPMΛఆٛ "QQMJDBUJPO-BZFSͰ*NQMFNFOUBUJPOΛ%*͢Δ 7JFX 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ 1SFTFOUFS

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࣮૷ํ਑ 1SFTFOUBUJPO %PNBJO %BUB-BZFS͸શͯQSPUPDPMΛఆٛ "QQMJDBUJPO-BZFSͰ*NQMFNFOUBUJPOΛ%*͢Δ

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'SBNFXPSLԽ ֤ϨΠϠΛ'SBNFXPSLͰ෼ׂ -BZFSؒΛૄ݁߹ɺґଘؔ܎Λ࠷খݶʹ͢ΔͨΊʹಋೖ 7JFX 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ 1SFTFOUFS w 7JFX1SFTFOUFS૚ w %PNBJO%PNBJO૚ w %BUB%BUB૚ w $PSF௨৴ͳͲͷج൫෦ w 4UZMF6*$PNQPOFOUͷڞ௨ఆٛ w 6UJMJUZศརػೳͷू߹

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'SBNFXPSLԽ ֤ϨΠϠΛ'SBNFXPSLͰ෼ׂ -BZFSؒΛૄ݁߹ɺґଘؔ܎Λ࠷খݶʹ͢ΔͨΊʹಋೖ 7JFX 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ 1SFTFOUFS %PNBJO %BUB $PSF 6UJMJUZ 4UZMF 7JFX

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4UZMF(VJEF"QQ 'SBNFXPSLʹ͢Δ͜ͱͰڞ௨ԽͰ͖ .POFZ'PSXBSEΞϓϦʹ΋ͦͷ··࢖͑Δ Money Forward App Style Guide App Style Framework

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4UZMF(VJEF"QQ Money Forward App Style Guide App Style Framework 'SBNFXPSLʹ͢Δ͜ͱͰڞ௨ԽͰ͖ .POFZ'PSXBSEΞϓϦʹ΋ͦͷ··࢖͑Δ

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6*$PNQPOFOUͷڞ௨Խ 4UPSZCPBSEͰઃఆ͢Δ6*$PNQPOFOUʹ௚઀ઃఆ஋ΛೖΕͨ͘ͳ͍ ͚Ͳ4UPSZCPBSE্Ͱ൓ө͞Εͯ΄͍͠ /PSJ ίʔυͰ4UPSZCPBSEͷ 7JFXΛσβΠϯ͢Δ !ZVLJBTBJ IUUQTHJUIVCDPNZVLJBTBJ/PSJ

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ςϯϓϨʔτͷࣗಈੜ੒ $MFBO"SDIJUFDUVSF͸ϑΝΠϧ͕ଟ͘ͳΔͷͰɺ ςϯϓϨʔτΛࣗಈੜ੒͢Δͱ͔ͳΓָ IUUQTHJUIVCDPNCBOO[BJ,VSJ ,VSJ 9DPEF1SPKFDUʹ $MFBO"SDIJUFDUVSFͷ ςϯϓϨʔτΛࣗಈੜ੒ͯ͘͠ΕΔ !CBOO[BJ

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$MFBO"SDIJUFDUVSF΁ͷஔ͖׵͑ Ұؾʹશͯ࡞Γ௚͠ͷΑ͏ͳϦϑΝΫλ͸ͤͣɺ ը໘୯ҐͰঃʑʹ$MFBO"SDIJUFDUVSF΁ஔ͖׵͑

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$MFBO"SDIJUFDUVSF΁ͷஔ͖׵͑ 7JFX 1SFTFOU 6TF$BT 5SBOTMB .PEFM %BUB4U &OUJUZ 3FQPTJU Ұؾʹશͯ࡞Γ௚͠ͷΑ͏ͳϦϑΝΫλ͸ͤͣɺ ը໘୯ҐͰঃʑʹ$MFBO"SDIJUFDUVSF΁ஔ͖׵͑

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$MFBO"SDIJUFDUVSF΁ͷஔ͖׵͑ 7JFX 1SFTFOU 6TF$BT 5SBOTMB .PEFM %BUB4U &OUJUZ 3FQPTJU Ұؾʹશͯ࡞Γ௚͠ͷΑ͏ͳϦϑΝΫλ͸ͤͣɺ ը໘୯ҐͰঃʑʹ$MFBO"SDIJUFDUVSF΁ஔ͖׵͑ 7JFX 1SFTFOU 6TF$BT 5SBOTMB .PEFM %BUB4U &OUJUZ 3FQPTJU

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ඇϑϨʔϜϫʔΫґଘ ɹ-BZFSؒΛ௒͑ΔΑ͏ͳϑϨʔϜϫʔΫʹґଘͤ͞ͳ͍ w ௨৴૚΋-BZFSͰ෼͚ͯ63-4FTTJPOΛ࢖༻ w "MBNPpSF΍"1*,JU͸ա౓ͳػೳΛ࣋ͭͷͰ࢖Θͳ͍ w 6*ܥͷϥΠϒϥϦ͸-BZFSΛ௒͑ͳ͍΋ͷʹݶΔ w ྫ֎Ͱ3Y4XJGUΛಋೖ

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3Y4XJGUͷ1SPT$POT ɹQSPT w 6TF$BTF૚Ͱͷ1SPNJTFॲཧͷهड़͕༰қ w 3FQPTJUPSZ૚ҎԼͷ*'ΛετϦʔϜͰهड़ w ը໘ؒ&WFOU௨஌ͷ.VMUJ$BTUΛετϦʔϜͰ࣮૷Մ  DPOT w ࠜװ෦Λ3Y4XJGUͷෆ۩߹΍ϝϯςφϯεঢ়گʹґଘ w 3Y4XJGUࣗମͷֶशίετ

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1SPUPDPM0SJFOUFE1SPHSBNNJOH ɹ1SPUPDPM0SJFOUFE1SPHSBNNJOHΛҙࣝ͢Δ w QSPUPDPMΛ࢖ͬͨ*'ʹΑΔ࠷খݶͷґଘؔ܎ w QSPUPDPMʹ४ڌ࣮ͨ͠૷͸FYUFOTJPOͰهड़ w DMBTT͸ۃྗ࢖ΘͣTUSVDUͰ࣮૷͢Δ

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1SPUPDPM0SJFOUFE1SPHSBNNJOH 1SFTFOUFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ TUSVDU DMBTT 7JFX ɹ1SPUPDPM0SJFOUFE1SPHSBNNJOHΛҙࣝ͢Δ w QSPUPDPMΛ࢖ͬͨ*'ʹΑΔ࠷খݶͷґଘؔ܎ w QSPUPDPMʹ४ڌ࣮ͨ͠૷͸FYUFOTJPOͰهड़ w DMBTT͸ۃྗ࢖ΘͣTUSVDUͰ࣮૷͢Δ

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Ϟδϡʔϧͷڞ༗ Ұ෦ͷϞδϡʔϧΛஔ͖׵͑Δ͚ͩͰ৭Μͳը໘ʹରԠՄೳ HomeTimelinePresenterImpl UserTimelinePresenterImpl 7JFX 1SFTFOUFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ 1SFTFOUFSͷΈϞδϡʔϧ͕ҟͳΔྫ

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ςετͷ༰қੑ RepositoryMockImpl 7JFX 1SFTFOUFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ QSPUPDPMʹ४ڌͨ͠.PDL΍ςετίʔυͰ  ϨΠϠຖͷॊೈͳςετ͕Մೳ 3FQPTJUPSZΛ.PDLʹͯ͠ &OUJUZˠ.PEFMͷม׵Λςετ 6TF$BTFΛ.PDLʹͯ͠ɺ 7JFXͷ&WFOUʹର͢Δ1SFTFOUFSͷڍಈΛςετ UseCaseMockImpl

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·ͱΊ

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·ͱΊ %FTJHOFS OFFS "SDIJUFDUVSFʹۜͷ஄ؙ͸ͳ͍ Կ͕࠷ద͔ߟ͑ଓ͚Δ͜ͱ͕ॏཁ w "SDIJUFDUVSF͸༷ʑͳঢ়گɺશମͷߏ੒΋౿·ܾ͑ͯΊΔ w ϝϯόʔͱઃܭ΍։ൃํ਑ΛؚΊͨίϯςΩετΛڞ༗͢Δ Architecture

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