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Attributes API ࣮ફ @alpaca_tc 1
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プロフィール @alpaca_tc ΞϧύΧ͍ͨͪΐ͏ Moneyforward, inc Engineer 2
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Έͳ͞Μ 3
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Attributes API 4
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ͬͯ·͔͢ʁ 5
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͜Ε 7
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!ʮଘࡏͬͯΔʯ 8
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ͬͯ·͔͢ʁ 9
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"ʮͬͨ͜ͱͳ͍ʯ 10
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kamipo͞Μᐌ͘ 11
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” “ ΧελϚΠζ ͍ͯ͠Δਓ 2 % 12
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120ਓ * 2% HERE 13
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120 * 2% = 2.4 ਓ ձ 14
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ࠓͦΜͳ APIΛ͍͜ͳ͢ 15
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͢͜ͱ • Attributes APIͱ • Attributes APIྺ࢙ • ࣮ફฤ 16
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• Attributes APIͱ • Attributes APIྺ࢙ • ࣮ફฤ ͢͜ͱ 17
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ARͷܕม Attributes APIܕมʹ·ͭΘΔAPI 18
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ARͷܕม ܕͷఆٛͲ͜ʁ 19
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ARͷܕม AR/AM::Type (DBʹΑͬͯएׯҟͳΔ) 20
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Ϣʔβʔೖྗͷม #cast DBͷʹม #serialize DBͷ͔ΒRubyΦϒδΣΫτʹม #deserialize Typeͷऔಘ 21
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ARͷܕม ΧϥϜຖʹType 22 ͜ΕʹΑΓɺܕม͕ߦΘΕΔ
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Attributes APIͱ ARͷܕมʹϑοΫ͢ΔAPI User Record DB 23
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Attributes APIͱ ARͷܕมʹϑοΫ͢ΔAPI User Record DB age: integer owner: boolean; false schema 24
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Attributes APIͱ ARͷܕมʹϑοΫ͢ΔAPI User Record DB age: integer owner: boolean; false schema Attributes API 25
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Attributes APIͱ ARͷܕมʹϑοΫ͢ΔAPI User Record DB age: string owner: boolean; true schema Attributes API 26
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Attributes APIͱ ίʔυʹ͢Δͱ͜͏ͳΔ ܕมΛมߋͰ͖Δ 27
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׆༻ํ๏ ޙͷ࣮ફฤʹͯ 28
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• Attributes APIͱ • Attributes APIྺ࢙ • ࣮ફྫ ͢͜ͱ 29
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Attributes APIྺ࢙ Rails 4.2.0 ARʹAttributes APIొ private API ܕม·ΘΓͷϦϑΝΫλϦϯά 30
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Attributes APIྺ࢙ Rails 5.0.0 public APIԽ 31
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Attributes APIྺ࢙ Rails 5.2.0 ɾActiveModelʹAttributes API ɾ·ͩprivate API ɾdirty/ivarͱͷޓੑ" ɾpublic APIʹͳΔͷRails7(?) 32
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Attributes APIྺ࢙ ActiveModel::Attributes AMͰܕΛࢦఆͰ͖ΔΑ͏ʹͳͬͨ 33
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Attributes APIྺ࢙ alpaca-tc/active_model_attributes_backport ~5.1Ͱɺ΄΅͑·͢ 34
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Attributes APIྺ࢙ 35
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Attributes APIྺ࢙ Private APIͳͷͰࣗݾͰ 36
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• Attributes APIͱ • Attributes APIྺ࢙ • ࣮ફฤ ͢͜ͱ 37
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࣮ફฤ Attributes API ͍ํ ศརͳ׆༻ํ๏Λհ 38
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ᶃܕͷࢦఆ ࣮ફฤ 39
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ҙͷܕΛࢦఆ ActiveModelͩͱಛʹخ͍͠ ☺ ࣮ફฤ 40 ᶃܕͷࢦఆ
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ᶄσϑΥϧτͷઃఆ ࣮ફฤ 41
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ᶄσϑΥϧτͷઃఆ ࣮ફฤ DBҎ֎ͷॳظΛઃఆͰ͖Δ Ruby WorldͰಈతͳΛઃఆ after_initializeͰͷॳظԽ͕ෆཁʹͳΔ 42
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ᶅԾଐੑ ࣮ફฤ 43
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ᶅԾଐੑ ࣮ફฤ DBʹΧϥϜͷଘࡏ͠ͳ͍ΞΫηα attr_accessor+ܕͷΑ͏ͳ͍ํ ঝνΣοΫϘοΫεͳͲ AttributeMethods͑Δ 44
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ᶆಠࣗΩϟετ Attributes APIͰಠࣗͷܕΛࢦఆͰ͖Δ ࣮ફฤ 45 AM::Type::ValueΛܧঝͨ͠ΫϥεΛఆٛ
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࣮ફฤ ͏ଆ 46 Symbol ͔ ΠϯελϯεΛ͢ ॳظԽͷҾͤΔ
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ྫ: ి൪߸ ࣮ફฤ Ҏ֎ͷΛআ͍ͨ͠ 47
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࣮ફฤ Ҏ֎Λফ͢จࣈܕΛొ 48
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࣮ફฤ Attribute APIͰܕΛ্ॻ͖͢Δ 49
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ᶆಠࣗΩϟετ ܕɾܗࣜΛએݴతʹॻ͚Δ ࣮ફฤ before_validationͷܗॲཧ͕ཁΒͳ͍ 50
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ᶇ҉߸Խ DB<=>ARͰՄٯ҉߸Λ͍ͨ͠ ࣮ફฤ 51
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ݸਓใɾձࣾͷൿಗใ ηΩϡϦςΟ͕େࣄ ࣮ફฤ 52
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Attributes APIͳΒ… ࣮ફฤ 53
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࣮ફฤ ҉߸Խɾෳ߹Խ 54
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alpaca-tc/active_record_encryption ࣮ફฤ 55 Attribute APIʹΑͬͯ ҉߸Խ/෮߸ԽΛӅṭ 55
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৽نࣄۀʹಋೖத ࣮ફฤ 56
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Attributes API݁ߏศར ActiveModelʹೖΓɺར༻γʔϯ͕૿͑ͨ ·ͱΊ ͥͻ͝ར༻͍ͩ͘͞ 57 ׆༻ํ๏ݟ͖͑ͯ·͔ͨ͠ ʁ