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@amatsuda Coming Soon...💎 @amatsuda

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ಥવͰ͕͢ɺ

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OSS΍Γ͍ͨʂ 🛤 Α͍͘ΖΜͳͱ͜ΖͰ૬ஊ͞ΕΔ

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͍ΖΜͳͱ͜Ζ 🛤 Asakusa.rb 🛤 Ӭ࿨γεςϜϚωδϝϯτ͞ΜͷOSSύονձ 🛤 ͍ΖΜͳձࣾ 🛤 Πϯλʔωοτ

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🤔

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ʮ΍Γ͍ͨͳΒ΍Ε͹͍͍ͷ Ͱ͸ʁʯ 🛤 ʮύονΛॻ͘ʯҎ֎ʹ΍Δ΂͖͜ͱ͸ͳ͍ 🛤 ύονΛॻ͘ର৅ͷιϑτ΢ΣΞ͸ੈͷதʹແ਺ʹ ͋Δ

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🔜

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ͨͿΜࠓ͙͢ύονΛॻ͔ͳ͍ ཧ༝͸ٕज़ྗෆ଍ͱ͔Ͱ͸ͳ͍ 🛤 ࢓૊Έ 🛤 Ϟνϕʔγϣϯ 🛤 ετʔϦʔ 🛤 ͖͔͚ͬ

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͖͔͚ͬ͸͞·͟· 🛤 ࠓ೔͸ɺ͍ΖΜͳϓϩμΫτΛ঺հ͠ͳ͕ΒɺͦΕ Λॻ͍͖͔͚ͨͬ΍ͦͷͱ͖ߟ͍͑ͯͨ͜ͱͳͲΛ ͝঺հ 🛤 OSS։ൃʹڵຯ͕͋Δ͚Ͳ࢝Ί͔͕ͨΘ͔Βͳ ͍ɺܧଓͰ͖ͳ͍ɺͱ͍͏ํͷࢀߟʹͳΕ͹

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ͱ͍͏ײ͡Ͱɺࠓ೔͸ࣗຫΛ
 ͠ʹདྷ·ͨ͠ʂ 🛤 ࣗຫͱࣗըࣗࢍ 🛤 RubyKaigiͰ͍ͭ΋εϐʔΧʔͷօ͞Μʹ͓ئ͍
 ͯ͠Δ΍ͭ

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self 🛤 name: Akira Matsuda 🛤 GitHub: @amatsuda 🛤 Twitter: @a_matsuda

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ੈքతʹ༗໊ͳϓϩάϥϚʔ
 ͸͡Ί·ͨ͠

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ոจॻ

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https://jp.quora.com/ϓϩάϥϛϯάʹ͓͍ͯ- ੈքతʹ༗໊ͳ೔ຊਓ͸͍/answers/141576838

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https://twitter.com/joker1007/ status/1157578882184183808

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ͦΜͳ͜ͱͳ͍Ͱ͢ʼʻ 🛤 ݺ͹ΕΕ͹Ͳ͜Ͱ΋ߦ͘ؾຬʑͳͷʹࠃ಺͔Β͸
 ͥΜͥΜ੠͔͚ͯ΋Β͑ͳ͍͚ͩͳΜͰ

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Rubyίϛολʔ

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Railsίϛολʔ

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͔ͤͬ͘ͷୈ1ճKaigi on RailsͳͷͰ ͪΐͬͱ͚ͩRailsͷ࿩

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Railsͱࢲ

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ݹגίϯτϦϏϡʔλʔ 🛤 https://contributors.rubyonrails.org/

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https:// contributors.rubyonrails.org/

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SinceͷཝΛݟΔͱΘ͔Δ

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13೥໨

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͜ͷதͰɺݱ໾Ͱίϛοτ
 ͯ͠Δਓ 🛤 ҾୀΛද໌ͨ͠΋͘͠͸3೥Ҏ্ίϛοτͯ͠ͳ͍ ਓΛফ͜͠ΜͰΈΔ

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ݱ໾

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Railsίϛολʔ͸ͲΜͲΜਓ͕
 ೖΕସΘ͍ͬͯΔ͜ͱ͕Θ͔Δ 🛤 ྺͷઙ͍ϝϯόʔ͕ͨͪ׆༂͍ͯ͠Δ

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RailsϓϩδΣΫτ͸ɺ௕೥ଓ͍͍ͯΔΘΓ ʹɺ͔ͳΓ݈શʹӡӦ͞Ε͍ͯΔͷͰ͸ͳ͍͔

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Ruby΍Railsͷपลͷ͍Ζ͍Ζ

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Asakusa.rbओ࠵ͯ͠·͢

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Asakusa.rbओ࠵ͯ͠·͢

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ΦϯϥΠϯͰຖिՐ༵೔ʹ΍ͬͯΔ ͷͰ͓ؾܰʹ༡ͼʹདྷ͍ͯͩ͘͞

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RubyKaigiͷ
 νʔϑΦʔΨφΠβʔ΍ͬͯ·͢

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RubyKaigi Takeout 2020͝ࢀՃ ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ

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RubyKaigi 2021 🛤 https://rubykaigi.org/2021

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Kaigi on Railsͱࢲ

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ͳΜ͔RailsͷΠϕϯτ΍Γ͍ͨͬͯݴͬͯΔେ૔͞Μ Λogijun͞ΜʹҾ͖߹ΘͤͯKaigi on Railsͷ໊લΛ ݱ୅ʹોΒͤͨͷΦϨΦϨ 🛤 ͱ͍͏࿩͸ઌिͷۜ࠲RailsͰ΋͏΍ͬͨͷͰলུ

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झຯͰΑ͘ύονΛ
 ॻ͍͍ͯ·͢

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ࠓिɺͱ͋Δ͓࢓ࣄͷRailsΞϓϦ ͷϦϙδτϦͰूܭͯ͠Έͨ݁Ռ 🛤 Railsຊମ͓ΑͼrailsΦʔΨχθʔγϣϯͰϝϯς͍ͯ͠Δgemͨͪ (16ݸ) 🛤 ࣗ෼͕࡞ͬͨ΋ͷ (6ݸ) 🛤 ϝϯςφΛ΍ͬͯΔ(= ίϛοτݖΛ͍࣋ͬͯΔ)΋ͷ (4ݸ) 🛤 ্هҎ֎ͷ͏ͪɺաڈʹ1ͭҎ্Կ͔Λίϛοτͨ͜͠ͱ͕͋Δ΋ͷ (86ݸ) 🛤 ະίϛοτͷ΋ͷ (211ݸ)

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ΞϓϦͰbundle͍ͯ͠Δgemͷ͏ͪ 112/323 ʹ͸Կ͔͠Βίϛοτͯͨ͠ 🛤 3෼ͷ1ڧ͙Β͍ 🛤 ͜Μͳײ͡Ͱɺͱʹ͔͍͘ΖΜͳgemΛಡΈॻ͖
 ͠·͘ΔελΠϧ

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͍ΖΜͳਓ͕ॻ͍͍ͨΖΜͳίʔυΛ ಡΈॻ͖͢Δͷ͸ָ͍͠ͷͰ͓͢͢Ί

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ͦͷͨΊʹ͸ɺ೔ࠒ͔Β͍ΖΜͳίʔυΛಡΈ ॻ͖͢Δ·ͰͷϋʔυϧΛԼ͓͛ͯ͘ͷ͕େࣄ 🛤 ಡΈ͍ͨɺͱࢥͬͨ࣍ͷॠؒʹ͸αοͱಡΈ࢝ΊΒ ΕΔΑ͏ʹ 🛤 ͦͷ৔Ͱ͙͢ʹύονΛॻ͖࢝ΊΒΕΔΑ͏ʹ

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OSSϥΠϒϥϦͷίʔυΛಡΜͰ ύονΛॻ͘ϋʔυϧΛԼ͛Δʹ͸ 🛤 ·ͣ͸gem-src

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💎 gem-src 🛤 ͍ΖΜͳgemͷιʔείʔυ͕ϞϦϞϦऩूͰ͖Δ ΍ͭ 🛤 gem installίϚϯυΛ֦ுͯ͠ɺΠϯετʔϧͷ ͍ͭͰʹgemͷιʔείʔυΛউखʹखݩʹclone ͯ͘͠ΕΔΑ͏ʹ͢Δ

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ࠓேɺେ͖ͳػೳ௥ՃΛ
 ͠·ͨ͠

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gem-src as a Bundler Plugin! % bundler plugin install gem-src

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ࠓ೔·Ͱࠔ͍ͬͯͨ͜ͱ 🛤 ͠͹Β͘લͷBundlerͷ࢓༷มߋͷ͍ͤͰɺ Bundlerܦ༝ͰΠϯετʔϧ͞ΕͨgemͰ͸after- install hook͕૸Βͳ͘ͳ͍ͬͯͨ

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BundlerϓϥάΠϯԽ͢Δ͜ͱͰɺBundlerܦ༝ͰΠϯ ετʔϧ͞Εͨgemʹ΋gem-src͕ޮ͘Α͏ʹͳͬͨ

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RubyGemsϓϥάΠϯ݉
 rbenvϓϥάΠϯ݉BundlerϓϥάΠϯ 🛤 1ϦϙδτϦͰτϦϓϧϓϥάΠϯʂ 🛤 ͜ΜͳϓϩμΫτ͸ͨͿΜੈքॳͩͱࢥΘΕΔ 🛤 ͱ͍͏͔RubyGemsϓϥάΠϯ΋rbenvϓϥάΠϯ ΋BundlerϓϥάΠϯ΋ϚΠφʔ͗ͯ͢୭΋࡞ͬͯ ͳ͍

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ࠓ೔͔Β͸ɺrbenvͱbundlerͷ྆ํ ͱ΋ʹ૊ΈࠐΜͰ͓͘ͷ͕ਪ঑ઃఆ % git clone https://github.com/amatsuda/gem-src.git "$(rbenv root)/plugins/gem-src" 
 % bundler plugin install gem-src

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ར༻͍ͯ͠Δgemͷιʔείʔυ͸શͯखݩʹ
 ஔ͍͓͚ͯΔΑ͏ʹͳͬͯɺύονΛൃࣹ͢Δ·Ͱ ͷϦʔυλΠϜ͕ܶతʹॖ·Δ 🛤 ๻ͷखݩͰ͸ਪఆ2000ݸఔ౓͕cloneࡁΈͰɺ
 ͍ͭͰ΋ύον͕ॻ͚Δঢ়ଶʹͳ͍ͬͯΔ 🛤 ͜Ε͕ແ͍ͱOSS׆ಈ͕Ͱ͖ͳ͘ͳΔ͘Β͍ศར

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͜ΕͰࠓ೔͔Βύον͕ૉૣ͘ ॻ͚ΔΑ͏ʹͳΔ͸ͣͰ͢

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🔜

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ࠓ೔͔ΒύονΛͨ͘͞Μ
 ॻ͍͍͖ͯ·͠ΐ͏

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ͦΕ͔Βɺ๻ͷ৔߹ɺଞਓͷϓϩμΫτʹύονΛ ౤͛Δ͚ͩ͡Όͳͯ͘ɺझຯͰΑࣗ͘࡞ͷgemΛ ࡞͍ͬͯ·͢

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࢓ࣄฑɺओʹʮRailsϓϥΪϯʯ

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"Rails Plugin" 🛤 ࢮޠʁ 🛤 ࠷ۙͰ͸୯ʹ"gem"ͬͯݴΘΕͯΔʁ

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gem != Rails Plugin

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౰ͨΓલ͚ͩͲɺੈͷதʹ͸Railsͷ֦ ுҎ֎ͷgem΋͋Δ

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💎 rfd

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rfd 🛤 RubyͰ࡞ͬͨFD(ϑΝΠϥʔ)ͷΫϩʔϯ

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ݟͲ͜Ζ 🛤 rfd/commands.rb 🛤 Կ͔Ωʔ͕ԡ͞ΕΔͱɺͱʹ͔ͦ͘ͷΩʔͷ໊લͷ ϝιου͕࣮ߦ͞ΕΔ

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͖͔͚ͬ 🛤 ͜ͷcommands.rbͷ࢓૊ΈΛࢥ͍͍ͭͯ͠·ͬͨ ͷͰ࣮૷ͯ͠Έͨ͘ͳͬͯ࡞ͬͨ

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ϝϯς 🛤 2ը໘ରԠͱ͔͍ͨ͠ͱࢥ͍ଓ͚ͯ਺೥ؒ์ஔத…… 🛤 ։ൃΛख఻ͬͯ͘ΕΔํืूத

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gem != Rails Plugin 🛤 ࠓ౓͸ٯʹɺgemͰ͸ͳ͍Rails pluginͷύλʔϯ

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ੲ͸Railsͷ֦ு͸gem͡Ό
 ͳ͔ͬͨ

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💎 i18n_generators

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i18n_generators 🛤 Rails I18nͷϦιʔεϑΝΠϧΛࣗಈ຋༁Ͱੜ੒͠·͘Δ΍ͭ 🛤 ๻͕ॳΊͯࣗ෼Ͱ࡞ͬͨRails plugin 🛤 (ͦΕҎલʹ͸ଞਓ͕࡞ͬͨ΋ͷΛforkͯ͠ϝϯςͱ͔͙ͯͨ͠Β͍) 🛤 2008೥ 🛤 GitHubͱ͔Asakusa.rbͱ͔͕Ͱ͖ͨ೥

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First CommitΛݟͯΈΔͱ…… 🛤 https://github.com/amatsuda/ i18n_generators/commit/7a9b45c

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Installation

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gem install ͱ͔ bundle install ͡Όͳ͍ʂ 🛤 ౰࣌͸gem͡Όͳ͔ͬͨ͜ͱ͕Θ͔Δ

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Rails pluginͱͯ͠͸ൺֱతྺ࢙ ͕௕ͯͣͬ͘ͱϝϯςͯ͠ΔͷͰ 🛤 Ruby 1.8ʙ3.0ͷશͯͷόʔδϣϯRubyͰಈ͘ 🛤 Rails 3.0ʙ6.1ͷશͯͷόʔδϣϯRailsͰಈ͘ 🛤 ݱଘ͢ΔRails I18nؔ࿈ϓϩμΫτͱͯ͠͸࠷ݹͷ ΋ͷ͔΋͠Εͳ͍

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࡞͖͔͚ͬͨͬ 🛤 Rails I18nϓϩδΣΫτʹ࠷ॳ͔ΒؔΘͬͨ೔ຊਓͩͬͨ 🛤 ౰࣌޿͘࢖ΘΕ͍ͯͨ gettext-rails ͷϦιʔεΛϕʔεʹͯ͠ɺຊମଆ ͷ ja.yml Λॻ͍ͨ 🛤 ΞϓϦ಺ͷYAML͸Ωʔͷ໋໊نଇ͕ܾ·ͬͯΔΜ͔ͩΒࣗಈੜ੒Ͱ͖ ΔͷͰ͸ʁͱࢥͬͨͷͰ΍ͬͯΈͨ 🛤 Rails I18n͢ΔͳΒ͜͏͍͏΋ͷ͕ඞਢͰ͸ʁͱࢥͬͯ࡞͚ͬͨͲɺ
 ҙ֎ͱ޿·Βͳ͔ͬͨ

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ٯʹɺ࡞ऀ͕ࢥͬͨҎ্ʹ
 ޿·ͬͯ͠·ͬͨ΋ͷ

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💎 kaminari

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kaminari 🛤 ϖʔδωʔγϣϯ͢Δ΍ͭ 🛤 2011೥

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࡞͖͔͚ͬͨͬ 🛤 ౰࣌σϑΝΫτͩͬͨwill_paginate͕Rails 3ʹ
 ͳ͔ͳ͔ରԠͯ͘͠Εͳͯ͘ࠔͬͯͨ 🛤 ͦͷ͜Ζ࡞ऀͨͪ͸GitHub͍ͬͯ͏ελʔτΞοϓ Λ૑ۀͯͯ͠๩͔ͬͨ͠ 🛤 Rails 3ͷ৽ػೳΛ࢖͑͹΋ͬͱ͏·͘࡞ΕΔؾ͕ͨ͠

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Rails 3ͷ৽ػೳ 🛤 Active RecordͷϝιουνΣΠϯํࣜͷ৽API 🛤 Rails Engine

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Rails 3ͷ৽ػೳʹ͍ͭͯͷৄ͍͜͠ͱ͸ ౰࣌ WEB+DB Press Vol. 58 ʹॻ͍ͨ 🛤 ૯ूฤͷDVDΛങ͑͹ࠓͰ΋ಡΊ·͢

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ݱଘ͢ΔதͰ͸ੈքͰԿ൪໨͔ʹ ݹ͍Rails Engine͔΋͠Εͳ͍

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kaminari͍ͬͯ͏;໊͚ͨ͟લ 🛤 ίʔυ͸ॻ͚ͨΜ͚ͩͲɺ໊લ͕ܾΊΒΕͳͯ͘
 2ि͙ؒΒ͍ϦϦʔεͰ͖ͳ͔ͬͨ 🛤 ౦ژRubyձ͔ٞͳΜ͔Ͱhsbt͞Μʹ͖ͯͱ͏ʹ
 ܾΊͯ΋Βͬͨ

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ڞಉϝϯςφ 🛤 @yuki24 🛤 ౰࣌Issue͕100ݸͱ͔ཷ·ͬͯΔͷΛݟΔʹݟ͔Ͷ ͯɺAsakusa.rbͷmeetupͰʮख఻͍·͠ΐ͏ ͔ʁʯͬͯݴͬͯ͘Εͨ

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ͻͲ͍ίʔυ 🛤 ·͍͋Ζ͍Ζྺ࢙తܦҢ͕͋ΔΜͰ͢Α 🛤 ࠓͱͳͬͯ͸ݟͲ͜Ζ͸ಛʹͳ͍͠ɺίʔυ͸৭ʑ ͻͲ͍ΜͰಛʹಡΉඞཁ͸ͳ͍

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2011೥ͭͳ͕Γ 🛤 2011೥ʹ࡞ͬͨଞͷgem

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💎 action_args

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action_args 🛤 Railsͷίϯτϩʔϥʔ͕MerbΈ͍ͨʹͳΔ΍ͭ 🛤 ͜ΕφγͰ͸RailsͳΜ͔࢖͑ͳ͘ͳΔ͙Β͍ศར ͳ΍ͭ

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ࣗ෼͕࡞ͬͨgemͷதͰҰ൪޷͖ ͳ΍͔ͭ΋͠Εͳ͍

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࡞͖͔͚ͬͨͬ 🛤 Rails 3ͷίϯτϩʔϥʔͷίʔυ͕ؾʹ৯Θͳ ͔͔ͬͨΒ

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Rails 2 + Merb = Rails 3 🛤 ίϯτϩʔϥʔʹؔͯ͠͸ɺྑ͘ͳ͍ํͷAPIΛ
 બ୒ͯ͠͠·ͬͨ 🛤 ͜͜ͰMerbํࣜΛαϙʔτͰ͖ͳ͔ͬͨͷ͸Rails ͷྺ্࢙਺গͳ͍DHHͷ൑அϛεͩͱࢥ͏

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ݟͲ͜Ζ 🛤 https://github.com/asakusarb/action_args/ commit/895b1ad

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"using Refinements in order not to reveal our plugin internal methods"

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͜ͷgemͷதͰ͔͠࢖Θͳ͍௒ϓϥΠϕʔτͳ ϝιουΛੜ΍ͨ͢ΊʹrefinementsΛ׆༻ 🛤 ͜͜Ͱ͸ɺActionController::Base ʹϓϥΪϯ಺ ෦༻ͷϩδοΫΛ௥Ճ͍ͯ͠ΔΜ͚ͩͲɺͦΜͳ΋ ͷ͕ϢʔβʔͷΞϓϦʹ࿙Εग़ͪ͠Ό͏ͱΧοίѱ ͍ 🛤 ͦ͜ͰɺϑΝΠϧείʔϓͳϝιουΛݺͼ͍ͨͱ ͜ΖͰ͚ͩੜ΍͢Α͏ʹ͢Δ

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2015೥8݄ 🛤 ͜ͷίϛοτ͕ߦΘΕͨ2015೥8݄ʹԿ͕͋ͬͨͷ ͔ʁ

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͖͔͚ͬ͸ @_ksss_ ͞Μͷπ Πʔτ

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https://twitter.com/_ksss_/ status/631458253688340480

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https://twitter.com/a_matsuda/ status/631470723974873093

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https://twitter.com/_ksss_/ status/631478188414144512

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https://twitter.com/_ksss_/ status/631589269283303424

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https://twitter.com/a_matsuda/ status/631608168175415296

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ͪͳΈʹཌ೥ʹ͸Railsʹ΋ೖΕͨ 🛤 https://github.com/rails/rails/commit/ 571f0f32 🛤 ͜Ε͕Rails্࢙ॳrefinements

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https://github.com/rails/ rails/commit/571f0f32

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Refinements 🛤 ͓࢓ࣄͷRailsΞϓϦͰ͸΄ͱΜͲ࢖͍ಓ͕ͳ͍͚ ͲɺϥΠϒϥϦ΍ϑϨʔϜϫʔΫͷ։ൃʹ͸͛͢ʔ ศར

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͓ͦΒ͘͜ͷػೳΛ͏·͘࢖͏ͱɺΊͪΌΊ ͪΌ៉ྷͳϑϨʔϜϫʔΫΛ࡞Δ͜ͱ΋Մೳ͔΋ 🛤 public APIϝιουҎ֎͸ϢʔβʔʹԿ΋ݟ͑ͯͳ ͍Έ͍ͨͳ 🛤 Ͱ΋Rails͸͍·͞Βແཧ͔ͳ……

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ͦΕ͔Βɺ2011೥ʹ࡞ͬͨ΋ͷΛ ΋͏ͻͱͭ

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💎 active_decorator

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active_decorator 🛤 ͍ΘΏΔσίϨʔλʔ 🛤 Active Model͕஀ੜͨ͜͠ͱ΋͋ͬͯɺ Presenterύλʔϯͱ͔ͦ͏͍͏ͷ͕ྲྀߦͯͨ͠ 🛤 Draper͕Ͱ͖ͨͷ΋͜ͷ͜Ζ

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͖͔͚ͬ 🛤 Draperͷख৮Γ͕͋·Γʹ΋RubyΒ͘͠ͳͯ͘
 ؾ࣋ͪѱ͍ͷͰɺࣗ෼Ͱ΋ͬͱײ৮ͷྑ͍΋ͷΛ ࡞ͬͨ 🛤 ਖ਼͍͠ઃܭͱਖ਼͍࣮͠૷Λࢥ͍͍ͭͯ͠·ͬͨ

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ਖ਼͍͠ઃܭͱਖ਼͍࣮͠૷ 🛤 view helperͳΜ͔ͩΒɺhelperͱಉ༷viewͷதͰ
 ͚ͩ༗ޮʹͳΔ΂͖
 => 🛤 ͋ɺͱ͍͏͜ͱ͸ɺview_assigns ͷλΠϛϯάͰҾ ͖౉͠ର৅ͷivarΛObject#extend͢Ε͹͍͍ͷͰ ͸ʂ

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view_assignsͱ͔;ͭ͏஌Βͳ͍ ͱࢥ͏ΜͰ͚͢Ͳɺ 🛤 ͜ͷAPIͷ஌͕ࣝ͋Δ͔ͳ͍͔͕ɺDraperͱͷ
 ख৮ΓͷࠩΛੜΜͩ

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WEB+DB Press Vol.58ͷಛू1Λॻͨ͘Ίʹ Rails 3ͷίʔυΛಡΈ·ͬͨ͘ͷ͕࣮݁ͨ͠

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ख৮Γ 🛤 ;ͭ͏ͷRubyͷϞδϡʔϧΛૉ௚ʹ࢖͏͚ͩ 🛤 ಛघͳجఈΫϥεΛܧঝͱ͔͠ͳ͍ 🛤 ͓·͡ͳ͍Λ֮͑ͳͯ͘ྑ͍ 🛤 RubyͷύϫʔΛͦͷ··࢖͏

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ࣅͨΑ͏ͳίϯηϓτͷ΋ͷΛ
 ΋͏1ݸ

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💎 jb

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jb 🛤 JSONΛ࡞ΔͨΊͷςϯϓϨʔτΤϯδϯ 🛤 jbuilder͍ͬͯ͏DSL͕ԚΒͯ͘͠࢖͍ํ͕֮͑
 ʹ͍͘΍ͭͷalternative

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ίϯηϓτ 🛤 JSONͱRubyͷHash͍͍ͬͯͩͨҰॹͩΑͶ 🛤 ςϯϓϨʔτͷதͰจࣈྻΛ੾ͬͨுͬͨͯ͠ JSONͬΆ͍จࣈྻΛ૊ΈཱͯΔΜ͡Όͳͯ͘ɺ HashͷΠϯελϯεΛ࡞ͬͨΒͦΕΛJSONʹ͠ ͯ͘ΕΔ΄͏͕௚ײతͩ͠ے͕ྑ͍ͷͰ͸ʁ

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ઃܭͱ࣮૷ 🛤 Action ViewͰ͸1ຕ1ຕͷςϯϓϨʔτ͕ίϯύΠϧ͞Εͨ ΋ͷ͕ϝιουͱͯ͠ఆٛ͞ΕΔ 🛤 jbͰ͸ίϯύΠϧ΋Կ΋ͳͯ͘ɺςϯϓϨʔτʹॻ͍ͨ΋ͷ ͕ͦͷ···ΔͬͱϝιουbodyʹͳΔ 🛤 ͦͷϝιου͕HashͷΠϯελϯεΛฦ͢Α͏ʹ͢Ε͹͍ ͍͚ͩɻͱʹ͔͘;ͭ͏ͷRubyΛॻ͚͹ྑ͍

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ϝϦοτ 🛤 ṖͷDSLΛ֮͑ͳͯ͘ྑ͍ 🛤 Կ΋ͯ͠ͳ͍ͷͰ଎͍ 🛤 jbuilderΑΓ΋ϑΝΠϧ໊ͷ֦ுࢠ͕୹͍

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ݟͲ͜Ζ 🛤 template handlerͷԿ΋΍ͬͯͳͬ͞΀Γ

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lib/jb/handler.rb

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handler͕Կ΋΍ͬͯͳ͍ςϯϓϨʔτ
 ΤϯδϯΛ΋͏1ݸ

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💎 string_template

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ݱଘ͢ΔRubyͷςϯϓϨʔτ
 ΤϯδϯͷதͰ͸Ӊ஦࠷଎

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jbͱಉ͡ײ͡ͰɺςϯϓϨʔτ͕
 ͦͷ··ϝιουbodyʹͳΔ 🛤 ͦ͜Ͱฦͨ͠String͕ͦͷ··HTMLͱ͔ʹͳΔ

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ςϯϓϨʔτ͕ΫΦʔτ͞Εͨ΋ͷ͕ ·Δ͝ͱ1ຊͷStringϦςϥϧʹͳΔ 🛤 ແବͳbufferΦϒδΣΫτ͕࢖ΘΕͣʹҰܸͰ String͕૊ΈཱͯΒΕΔͷͰੈք࠷଎

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ͨͩͷRubyͳͷͰɺಛघͳຒΊࠐΈ
 ه๏ͱ͔͸Ұ੾ͳ͍

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<%= %> ͱ͔ແͯ͘େৎ෉ͳͷʁ

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RubyͷStringʹ͸ #{} ͷ interpolation ͕͋ΔΜͰ͢Αʂ 🛤 ͜ΕͰ͚ͬ͜͏ͳΜͱ͔ͳΔ

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࢖͍Ͳ͜Ζ 🛤 layoutϑΝΠϧͱ͔Έ͍ͨͳɺΊͬͪΌrender͞ ΕΔ͚Ͳ͋·Γසൟʹ͍͡Βͳ͍Α͏ͳ΋ͷ͸͜Ε Ͱॻ͍͓ͯ͘ͱύϑΥʔϚϯε͕Ք͛Δ͔΋

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ݟͲ͜Ζ 🛤 ΍ͬͺΓtemplate handlerͷԿ΋΍ͬͯͳͬ͞΀ Γ

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lib/string_template/ handler.rb

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Τϯδϯͭͳ͕Γ 🛤 Τϯδϯ͸ΤϯδϯͰ΋ɺࠓ౓͸ςϯϓϨʔτΤϯ δϯ͡Όͳͯ͘ Rails Engine

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💎 heavens_door

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heavens_door 🛤 ΈΜͳେ޷͖Capybaraͷςετίʔυ͕ɺϒϥ΢ βͷૢ࡞͔Βੜ੒Ͱ͖ΔEngine

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໊લ 🛤 ࿐൐ઌੜͷελϯυ 🛤 ͳΜ͔ͦΕͬΆ͍ؾ͕ͨ͠Μ͚ͩͲɺ·͋Θ͔Γʹ ͔ͬͨ͘Ͱ͢Ͷ

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͖͔͚ͬ 🛤 ZOZOςΫϊϩδʔζ͞Μͷ৽نҊ݅ͰɺΈΜͳͰ systemςετॻ͜͏͍ͥͬͯ͏͜ͱʹͳͬͯ 🛤 Ͱ΋खॻ͖Ͱ͍͍ͪͪॻ͘ͷ͸େมͩͬͨͷͰ

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࣮͸ϒϥ΢βૢ࡞Ϟʔυ͚ͩ͡Όͳͯ͘ ίϚϯυϥΠϯϞʔυ΋͋ͬͨΓ͢Δ

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ίϚϯυϥΠϯϞʔυʁ 🛤 ࡞ͬͨຊਓʹ͔͠࢖͍ํ͕Θ͔Βͳ͍πʔϧʹͳΓ ͦ͏ͳͷͰ৸͔ͤͯ͋Δ

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ઌߦݚڀ 🛤 ͜ͷϒϥ΢β্ͷૢ࡞Λه࿥ͯ͠capybaraͷίʔ υΛు͘ػೳ͸ɺ2010೥ʹ࡞ͬͨhocus_pocusͬ ͍ͯ͏Rails Engine pluginͷػೳͱͯ͠طʹ࣮૷ ࡁΈͩͬͨ΋ͷ

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͜Μͳ;͏ʹxx೥ܦ͔ͬͯΒੲॻ͍ͨ ίʔυͷժ͕ग़ͨΓ͢Δ͜ͱ΋͋Δ 🛤 ௕೥ίʔυΛॻ͖ଓ͚ͯΔͱΞυόϯςʔδ͕͋ͬ ͨΓ͢Δɺͱ͍͏ࣄྫ

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💎 hocus_pocus

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hocus_pocus 🛤 WikiΈ͍ͨͳײ֮Ͱɺϒϥ΢β্Ͱૢ࡞ͨ͠Βαʔ όʔ্Ͱϖʔδ͕࡞ΕΔRails Engine

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࡞Γ࢝Ίͨͷ͸2010೥ 🛤 Kaminari͕Engineͱͯ͠͸૬౰ݹ͍͖ͬͯͬ͞ ݴ͚ͬͨͲɺͦΕΑΓݹ͔ͬͨ 🛤 ͍͢͝Φʔύʔπ͔΋͠Εͳ͍

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͍·͍ͪྲྀߦΒͳ͔ͬͨ…… 🛤 UI͕ϔϘ͗ͨ͢ 🛤 πʔϧࣗମͷ֓೦͕೉͗ͨ͢͠ 🛤 υΩϡϝϯτ͕ແͩͬͨ 🛤 ΍Γ͔ͨͬͨ͜ͱ͸Ͱ͖ͦ͏ʂͬͯࢥͬͨΒͳΜ͔ ๞͖ͨ

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͍͍ͩͨͰ͖ͨʂ => ͪΌΜͱ࢖͑ Δ·Ͱ࡞ΓࠐΉͷ͕ۤख

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ίϯηϓτ͕ಛघͩ͠࢖͍ํ΋೉ղͰɺ࡞ͬͨ ຊਓʹ͔͠࢖͍ํ͕Θ͔Βͳ͍πʔϧʹͳͬͯ ͠·ͬͨ

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͜ͷϓϩμΫτ͕ٴ΅ͨ͠Өڹ 🛤 Railsඪ४ͷweb-consoleΛΠϯεύΠΞ 🛤 https://github.com/rails-girls-summer-of- code/summer-of-code-2014/wiki/Project- ideas#conductor-web-based-assistant-for- development

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࡞ͬͨߕ൹͸͋ͬͨΈ͍ͨ 🛤 ݁ہweb-console͸΍ͬͯΔ͜ͱ͸ͥΜͥΜҧ͏ ͚Ͳ……

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Capybaraؔ࿈ͷϏδϡΞϧܥͷ EngineΛ΋͏1ͭ (͋ͱ͍ͭͰʹݴ͏ͱϓϩάϨۂ໊ͭͳ͕Γ)

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💎 roundabout

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roundabout 🛤 ը໘ભҠਤੜ੒πʔϧ

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ը໘ભҠਤͷੜ੒ 🛤 ࣮૷ͱͯ͠͸CapybaraͷϞϯΩʔύον 🛤 ςετίʔυதʹCapybaraͰൃੜͨ͠ϦΫΤετ ͷભҠΛશ෦ه࿥͢Δ 🛤 ͜ΕΛͭͳ͛ͯֆʹ͢Δͱը໘ભҠਤʹͳΔ

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͜Μͳײ͡(RedmineϓϩδΣΫτͰ ࣮ߦͨ݁͠Ռ)

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ਤʹ͸ςετ͕ॻ͔Ε͍ͯΔ
 ΋ͷ͔͠ग़ͯ͜ͳ͍ 🛤 ͭ·Γɺ͋ΔछͷςετΧόϨοδతͳ΋ͷ͕Մࢹ Խ͞ΕΔπʔϧͰ͋Δͱ΋ݴ͑Δ

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ΞΠσΞ͸͓΋͠Ζ͍͠ɺϙςϯγϟϧ͸͋Δ ؾ͕͢ΔΜ͚ͩͲɺ͋·Γ࢖ΘΕͯΔखԠ͑͸ ͳ͍͔΋ 🛤 ͜ΕΛػʹͥͻ͝ར༻͍ͩ͘͞

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ΧόϨοδؔ࿈ͭͳ͕ΓͰ

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💎 per_file_coverage (unreleased)

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per_file_coverage (Ծ) 🛤 ςετ࣮ߦ࣌ʹɺΞϓϦΛߏ੒͢Δ֤ϑΝΠϧ͕
 Ͳͷςετ͔Βݺͼग़͞Ε͍ͯΔ͔(ͱɺͦͷٯ)Λ
 શ෦ચ͍ग़ͯ͠ՄࢹԽ͢Δ

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࣮૷ͱͯ͠͸SimpleCovͷ
 ϓϥάΠϯ 🛤 (ͨͩ͠SimpleCovʹ͸ϓϥάΠϯͳͲͱ͍͏֓೦ ͸ͳ͍)

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஍ࠈͷϞϯΩʔύον 🛤 ͦ͏͍͑͹͍͓ͪ͏ SimpleCov ͷίϛολʔͰ͸ ͋ΔͷͰɺ֦ு͕͠΍͍͢Α͏ʹϑΟʔυόοΫ͙ Β͍͸͍͖͍ͯͨ͠

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RubyͷCoverageϞδϡʔϧΛ
 ར༻

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͖͔͚ͬ 🛤 ANDPADࣾͷͦͦ͜͜ͷن໛ͷطଘΞϓϦʹࢀը ͯ͠ɺʮ͜ͷίʔυ͸ͲͷspecϑΝΠϧ͔Βςε τ͞ΕͯΔΜͩΖ͏ʁʯͱ͔ɺٯʹʮ͜ͷspec͸ Ͳ͜Β΁ΜͷϑΝΠϧΛςετͯ͠ΔΜͩΖ͏ʯͱ ͔஌Γͨ͘ͳͬͨͷͰ

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application_controller͚ͩͰ΋300ݸͱ͔͋Δ ͷͰɺ΍ͬͺ͜͏͍͏ͷ͕஌Γͨ͘ͳΔΜͰ͢Α

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Ξ΢τϓοτྫ

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͔͠͠ɺgem͸·ͩͳ͍…… 🛤 HTML͕ڊେԽͨ͠৔߹ͷύϑΥʔϚϯε໰୊͕
 ౗͍ͤͯͳ͍ 🛤 ໊લ͕ܾ·͍ͬͯͳ͍ʂ

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୭໊͔͍͍લΛ͚͍ͭͯͩ͘͞ 🛤 ͓ئ͍͠·͢

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Coming Soon...💎

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࠷ۙͷ͓࢓ࣄؔ࿈Ͱ࡞ͬͨ΋ͷΛ ΋͏1ͭ

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💎 lightweight_attributes

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lightweight_attributes 🛤 Active RecordͷϞσϧͷΠϯελϯεੜ੒Λۃྗ ܰ͘͢ΔͨΊͷ͑͛ͭͳ͍ϞϯΩʔύον

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ARͷϞσϧͷΠϯελϯεੜ੒ 🛤 AR 4͙Β͍Ͱೖͬͨtype castingͱ͔͍͏୭΋࢖ͬͯͳ ͍ػೳͷͨΊʹٸܹʹॏͨ͘ͳͬͨ 🛤 ͱʹ͔͘DB͔ΒϞσϧΛΨόοͱҾͬுͬͯฦ͚ͩ͢Έͨ ͍ͳAPIͱ͔ͩͱɺ͕͜͜ϘτϧωοΫʹͳΔ 🛤 RubyϨϕϧͰ͸ɺಛʹTimeతͳ΍ͭͷparse͕஗͔ͬͨ Γ͢Δ

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RubyͰTimeతͳ΍ͭͷparse͕ ଎͘ͳΔͱ͍͍ͳ͊ 🛤 https://bugs.ruby-lang.org/issues/16005

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https://bugs.ruby-lang.org/ issues/16005

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ͱ΋͋Εɺ lightweight_attributes ʹ͍ͭͯ

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sponsored by ΞΧπΩ 🛤 ࠓ೥͔Βnobuͷύτϩϯʹͳͬͨ͋ͷΞΧπΩࣾ Ͱ͢ʂ

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ίʔυ͕͑͛ͭͳ͗ͯ͢͞
 ϝϯςෆೳ 🛤 ͜ͷ΁Μͷίʔυ͸Railsͷόʔδϣϯ͝ͱʹͥΜ ͥΜҧͬͯͯɺෳ਺όʔδϣϯରԠͱ͔Ϛδແཧ

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ͱ͍͏͜ͱͰɺ·ͱ΋ʹϝϯς ͞Εͯͳ͍ͷͰར༻͸ඇਪ঑

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type castingΛ஗Ԇͤ͞Δͱ͍͏ ΞΠσΞ 🛤 kamipo͞Μ͕͏·͍͜ͱरͬͯActive Record 6.1ʹίϛοτͯ͘͠Ε͔ͨΒ΋͏͓ଂೖΓͰ͍͍͔ ͳ……

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Rails 6.1

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Coming Soon...💎

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ΞΧπΩ͞ΜεϙϯαʔͰ΋͏1ͭ

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💎 activerecord-ruby (unreleased) 🛤 ΞϓϦதͰߋ৽͞Εͳ͍͜ͱ͕લఏͷ͍ΘΏΔ
 ʮϚελʔσʔλʯΛΠϯϝϞϦʹల։ 🛤 ARͷΦϒδΣΫτͷ··Ωϟογϡ͢Δ 🛤 readonlyͳͷͰ҆৺ͯ͠࢖͍ճͤΔ

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ૂ͍ 🛤 ΫΤϦͷແବଧͪΛ཈੍ 🛤 ARͷΦϒδΣΫτੜ੒ίετΛ࡟ݮ 🛤 GCෛՙΛܰݮ

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͜͜·ͰͳΒ୭΋͕ߟ͑ͨ͜ͱ͋Δͱࢥ͏ Μ͚ͩͲɺΠϯλʔϑΣΠεͱ࣮૷͕໰୊ 🛤 Model.fetch_from_cache ͱ͔ͦ͏͍͏ײ͡ͷ
 μα͍ίʔυ͸ઈରॻ͖ͨ͘ͳ͍ 🛤 ϓϩμΫγϣϯͷίʔυ͸;ͭ͏ͷARͷίʔυ͔Β Կ΋ม͑ͣʹɺͰ΋ͲͷϞσϧ͕ʮϚελʔςʔϒ ϧʯ͔͚ͩڭ͑ͯ΍ͬͨΒউखʹۭؾΛಡΜͰಈ࡞ ͢Δ͙Β͍͕͍͍

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activerecord-ruby ͷAPI 🛤 ʮϚελʔʯͬΆ͍ϞσϧʹҎԼͷΑ͏ͳએݴΛ
 ೖΕΔ class Country < ActiveRecord::Base find_by_ruby! end

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ͦΕ͚ͩ 🛤 ଞͷίʔυ͸Ұ੾͍͡Βͳͯ͘΋ɺҎԼͷΫΤϦͨ ͕ͪDBΛݺͼग़͢͜ͱͳ͘ద੾ͳ஋Λฦ͢ Model.find(id) Model.where(prefecture: 'Tokyo').order(:created_at)

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joins͕ೖͬͯͨΓ͢ΔΑ͏ͳෳࡶͳΫΤϦ ͕౤͛ΒΕͨΒDBʹϑΥʔϧόοΫ͢Δ

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ϝϞϦ͔Βऔ͖ͬͯͨ΋ͷͱDB͔Βऔ͖ͬͯͨ ΋ͷʹᴥᴪ͕ͳ͍͔Ͳ͏͔ൺֱ͢ΔϞʔυΛ౥ࡌ 🛤 ςετΛ͜ΕͰճ͓ͯ͘͠ͱ҆৺Ͱ͖Δ͸ͣ

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ύϑΥʔϚϯεήΠϯ 🛤 ະ஌਺ 🛤 ਖ਼௚ͳͱ͜Ζɺ·ͱ΋ͳ࣮ΞϓϦͰͷޮՌ͸ݶఆత ͳ༧ײ͸͍ͯ͠Δ 🛤 DBͷ઀ଓ͕ύοπϯύοπϯΈ͍ͨͳ؀ڥͰ͸
 ޮ͔͘΋

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ݟͲ͜Ζ 🛤 ARͷΠϯλʔϑΣΠεͱγʔϜϨεʹ࿈ܞ͢ΔͨΊ ͷςΫχοΫ

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࣮૷ৄࡉ 🛤 AR͕૊ΈཱͯͨASTΛSQLͰ͸ͳͯ͘Rubyͷ
 ίʔυʹม׵͢Δ ToRuby visitor ΛΰϦΰϦ࣮૷

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gem͸·ͩͳ͍

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Coming Soon...💎

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ࠓ·Ͱʹແ͔ͬͨΞϓϩʔνͩ͠ɺίʔυ΋͔ ͳΓ͓΋͠Ζ͍ͷͰɺੈʹग़ͨΞΧπΩʹ͸ͥͻ ͍ͬͯ͡Έ͍ͯͩ͘͞

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ઌߦݚڀ 🛤 arel_ruby

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💎 arel_ruby 🛤 https://github.com/amatsuda/arel_ruby 🛤 (2012೥)

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ArelͷASTͷRuby visitor 🛤 ͭ·ΓɺࠓճͷϓϩμΫτͷΤϯδϯ෦෼ͦͷ΋ͷ

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͜Ε͸౰࣌ɺRDB͔Β੾Γ཭ͯ͠Rubyͷੈք͚ͩ ͰΞϓϦͷςετ͕࣮ߦͰ͖ͨΒ͓΋͠Ζ͍͔΋ɺ ͱࢥͬͯ΍ͬͯΈͨ΋ͷ 🛤 ͋·Γݱ࣮తͳϢʔεέʔεͰ͸ͳ͔ͬͨͷͰɺ
 ୯ʹ໘നͦ͏͔ͩΒ࡞ͬͯΈ͚ͨͩΈ͍ͨͳײ͡ʹ ͳͬͯ͠·ͬͨ 🛤 ͦͯͣͬ͠ͱ͓ଂೖΓ

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ίʔυ͸ॻ͚ͯ΋Ϣʔεέʔε Λݟޡͬͨྫ

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8೥ܦͬͯɺ৽ͨͳϢʔεέʔεΛ ݟ͚ͭͯ෮׆

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͜Μͳ;͏ʹxx೥ܦ͔ͬͯΒੲॻ͍ͨ ίʔυͷժ͕ग़ͨΓ͢Δ͜ͱ΋͋Δ 🛤 ௕೥ίʔυΛॻ͖ଓ͚ͯΔͱΞυόϯςʔδ͕͋ͬ ͨΓ͢Δɺͱ͍͏ࣄྫ

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·ͱΊ

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΍ͬͺRails 🛤 RailsΛ͍ͬͺ͍ಡΜͩΓॻ͍ͨΓ͍ͯ͠ΔͱRails ʹৄ͘͠ͳΔ

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͍ͭͰ΋Ͳ͜Ͱ΋ૉૣ͘
 ύονΛॻ͜͏ 🛤 Railsʹৄ͘͠ͳΔͱɺRails͚ͩ͡Όͳ͍ͯ͘ΖΜ ͳ΋ͷʹύον͕ॻ͚ΔΑ͏ʹͳΔ 🛤 gem-srcΛrbenv΍bundlerͱ࿈ܞ͓͍ͤͯͯ͞ɺ ৗʹ࠷୹खॱͰύονΛ౤͚͛ͭΕΔ४උΛ੔͑ͯ ͓͜͏

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ͱʹ͔ͨ͘͘͞Μ
 ύονΛॻ͜͏ 🛤 ύονΛͨ͘͞Μॻ͔ͳ͍ͱɺύον͕ॻ͚Δ
 Α͏ʹ͸ͳΒͳ͍ 🛤 ྔ͕࣭ʹస͡Δ͜ͱ΋͋Δ

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gem࡞Ո΁ͷಓ 🛤 ͍ΖΜͳ΋ͷʹύονΛॻ͍ͯΔͱɺଞਓʹॻ͔ͤ ΔΑΓࣗ෼Ͱॻ͍ͨ΄͏͕ྑ͍΋ͷ͕Ͱ͖Δ͜ͱ͕ Θ͔Δ 🛤 ͖͔͚ͬ΍ϢʔεέʔεΛ͔ͭ·͑ͯɺϓϩμΫτ ʹ͍ͯ͜͠͏

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ͦΜͳΜ୭Ͱ΋ࢥ͍ͭ͘Ͱ͠ΐɺΈ͍ͨ ͳgemͰ΋ͱʹ͔͘΍ͬͯΈΔͱྑ͍ 🛤 ҙ֎ͱ୭΋΍Ζ͏ͱͯ͠ͳ͔ͬͨΓɺࣗ෼͕ੈքͰ Ұ൪͏·͘΍ΕͨΓ͢Δ

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໊લॏཁ 🛤 ໊લ͚ͭΔͷΉ͍ͣ 🛤 ໊લ͕͚ͭΕͳͯ͘ࠓ೔ͷൃදʹؒʹ߹Θͳ͔ͬͨ ΋ͷ͕͍͔ͭ͋͘ΔͷͰɺ୭͔Ұॹʹ໊લΛߟ͑ͯ ΄͍͠……

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gemͷख़੒ 🛤 ࡞ͬͨgem͸͙͢ʹժ͕ग़ͳͯ͘΋ɺޙ͔ΒϢʔε έʔε͕͍͖ͭͯͯɺԿ೥΋ܦ͔ͬͯΒ໾ʹཱͬͨ Γ͢Δ 🛤 ͷͰɺ΍ͬͺΓΞΠσΞΛ͖ͪΜͱίʔυʹམͱ͠ ͓ͯ͘͜ͱ͕େࣄ

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ϝϯς 🛤 gemΛ͍ͬͺ͍࡞ͬͨΓͯ͠Δͱɺϝϯςର৅͕
 ૿͑͗ͯ͢ख͕ճΒͳ͘ͳΔ 🛤 ͦ΋ͦ΋๞͖ͬΆ͍ਖ਼֬ͳͷͰϝϯςͱ͔ۤख…… 🛤 ͳͷͰɺ୭͔ϝϯςख఻ͬͯ͘ΕΔͱͱͯ΋خ͠ ͍……

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Future Works 🛤 ࠓޙͱ΋ɺԿ͔ϓϩμΫτͷΞΠσΞ͕͖߱ͬͯͨ Βɺ਺ϲ݄ʹ1ճ͙Β͍ͷϖʔεͰgemΛ࡞Γଓ͚ ͍ͨ 🛤 @amatsuda ͷ࣍ճ࡞ʹ͝ظ଴͍ͩ͘͞ʂ

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Coming Soon! 💎

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·ͱΊ 🛤 গ͠Ͱ΋օ͞Μͷ͜Ε͔ΒͷOSS׆ಈͷώϯτʹ ͳ͍ͬͯΕ͹޾͍Ͱ͢

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end 🛤 name: Akira Matsuda 🛤 GitHub: @amatsuda 🛤 Twitter: @a_matsuda