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Node.js ͷ
ϥΠϒϥϦपΓͰ
ϋϚͬͨ
ksk1030 / 2018.06.29 @NodeֶԂ 31࣌ݶ
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ࣗݾհ
ɾKeisuke Nakatane (@ksk1030)
ɾORSO Inc. ৽نࣄۀ։ൃࣨ
ɾαʔόɿΞϓϦɿϑϩϯτ
ʹɹ̓ɹɿɹ̍ɹɿɹ̎ɹɹ͘Β͍
ɾલ৬ژͷήʔϜͰਓࣄ
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Node.js ͷ
ϥΠϒϥϦपΓͰ
ϋϚͬͨ
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No content
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Sequelize
ɾNode.js ༻ͷOR Mapper
ɹ- http://docs.sequelizejs.com/
ɹ- Rails Ͱ͍͏Active Record
ɾҰ൪ϝδϟʔͰΓ͍ͨ͜ͱͰ͖ͦ͏
ɾݹ͍ใώοτ͢ΔͷͰҙ (ver 3.x)
ɹ- ࠷৽ ver 4.38 ͱ ver 5 Beta (2018/06/24)
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ߏͬ͘͟Γ͜Μͳײ͡
ཧπʔϧ
ΞϓϦ
DB
ΞϓϦAPI ཧπʔϧAPI
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Ζ͏ͱͨ͜͠ͱ
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λΠϜγϑτػೳ
ɾσόοά༻ʹ staging ҎԼͰݱࡏ࣌ࠁΛ
ɹِ͢Δػೳ
ɾཧπʔϧ͔Β࣌ࠁΛߋ৽
ɾΞϓϦଆͷAPIͰ࣌ࠁࠩΛద༻͢Δ
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Moment.js
ɾΈΜͳେ͖ૢ࡞ܥϥΠϒϥϦ
ɹ- σϑΝΫτελϯμʔυͬΆ͍
ɾ࣌ؒͷॲཧશͯ͜Ε wrap ͨ͠ͷʹ౷Ұ
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ɾshiftSec ͕࣌ࠁͷࠩ
͜Μͳײ͡Ͱwrapͨ͠
import moment from 'moment-timezone'
import shiftSec from '../config/timeShift'
if (process.env.NODE_ENV !== 'production') {
moment.now = () => {
return new Date().getTime() + shiftSec * 1000
}
}
export default moment
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⚠ൃੜ⚠
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Model ͷ Scope ͕
ػೳͯ͠ͳ͍ʁ
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ɾSequelize ͷػೳ
ɹ- http://docs.sequelizejs.com/manual/tutorial/scopes.html
ɾڞ௨Խ͍ͨ͠ΫΤϦΛ model ʹఆ͓ٛͯ͘͠
ɹ- ʮϦϦʔεΛա͗ͨΧʔυʯͱ͔
Scope
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ɾ$lte ” ≦ ”ʢLess Than or Equalʣ
Scope
const now = moment()
const Card = sequelize.define('card', {
// Attributes
}, {
scopes: {
released: {
where: {
releasedAt: { $lte: now },
},
},
},
})
Card.scope(‘releasedAt').findAll() // ϦϦʔεޙͷΧʔυͷΈ
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ɾmodel ΞϓϦέʔγϣϯͷىಈ࣌ʹ
ɹInitialize͞ΕΔ
ɾScope ͦͷ࣌ͷݱࡏ࣌ࠁΛݩʹੜ
ɾىಈޙʹ shiftSec ͕มΘͬͯߋ৽͞Εͳ͍
ݪҼ
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Ͳ͏͠Α͏
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ຖճҾ͢ʁ
ɾείʔϓͷҾͰͦͷʹݱࡏ࣌ࠁͤ
ɹରԠͰ͖Δ
ɾ͕ɺ staging ҎԼͰ͔͠Θͳ͍ػೳͷ
ɹ͍ͤͰԽ͢ΔͷΠϠͩ
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Ϟσϧߋ৽
ɾ࣌ࠁ͕ࠩߋ৽͞ΕͨΒϞσϧߋ৽͢Δ
ɾͨͩ͠ɺཧπʔϧ༻APIͱΞϓϦ༻API
ɹผαʔόʹஔ͔Ε͍ͯΔ
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ߏ͓͞Β͍
ཧπʔϧ
ΞϓϦ
DB
ΞϓϦAPI ཧπʔϧAPI
ߋ৽ϦΫΤετΛड͚Δ
ϞσϧΛߋ৽͍ͨ͠
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࠷ऴతʹ
ɾDBͷϨίʔυͱɺϩʔΧϧϑΝΠϧʹ
ɹshiftSec ʢݱࡏ࣌ࠁͱͷඵࠩʣΛ࣋ͭ
ɾཧπʔϧͰߋ৽ͨ࣌͠ͰDBͷ͚ͩ
ɹॻ͖Θ͍ͬͯΔ
ɾΞΫηε͝ͱʹɺϩʔΧϧͱDBͷ shiftSec Λ
ɹνΣοΫɺ͕ࠩ͋Εߋ৽
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ͳΜͱ͔ͳͬͨ
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՝
ɾϞσϧͷߋ৽ͱΞΫηε͝ͱͷࠩνΣοΫ
ɹͪ͠ΌͬͯΔ͕ॏ͍
ɹ- staging ҎԼͳͷͰʹͳΓʹ͍͘
ɾͬͱ͍͍ߏ͕͋Γͦ͏
ɹ- Λ2ஈ֊Ͱ࣋ͬͯΔͷϒαΠΫ…
ɹ- ϞσϧΛͨ͠ϚΠΫϩαʔϏεԽʁ
ɾ͔ͯύοέʔδͱ͔ͳ͍ͷ͔…ʁ
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ͪͳΈʹ
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defaultScope
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defaultScope
ɾ໌ࣔతʹॲཧ͠ͳ͚ΕࣗಈͰద༻
const Card = sequelize.define('card', {
// Attributes
}, {
defaultScope: {
where: {
isActive: true,
},
},
})
Card.findAll() // scope ͷࢦఆͳ͠Ͱ acitve ͷΈ
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ศརʹݟ͑Δ͕
Rails ք۾Ͱ
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"ېஅͷՌ࣮"
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"ېஅͷՌ࣮"
ېढ
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Active Record Ͱ
ɾ෭࡞༻͕ଟ͍
ɹ- Β͵ؒʹϑΟϧλϦϯά͞ΕΔ
ɹ- unscoped ͢Δͱଞͷ݅Ϧηοτ
ɹ- Πϯελϯεੜ࣌ʹ default ͕ೖΔ
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͜Μͳײ͡
ʢ࣌ؒΒͣݕূෆेͰ͢ɻɻɻʣ
class User < ApplicationRecord
has_many :friends
end
class Friend < ApplicationRecord
belongs_to :user
default_scope -> { where(is_goodlooking: true) }
end
User.first.friends # ͨͩ͠ΠέϝϯʹݶΔ
User.first.friends.unscoped # “.first” ͷߜΓࠐΈ͕ແࢹ͞ΕΔ
Friend.new # ࠷ॳ͔ΒΠέϝϯ
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Sequelize Ͱ
Ͳ͏ͳͷ͔ʁ
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ҙ֎ͱେৎͬΆ͍͔…ʁ
ɾunscope ͱ defaultͷΫϦΞ
// ϢʔβͷߜΓࠐΈޮ͍ͨ··
const firstUser = await User.findOne()
firstUser.findAll({
include: [{ model: Friend.unscoped() }],
})
const newFriend = Friend.build() // { id: null }
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݁ہͲ͏ͳͷʁ
ɾΒ͵ؒʹϑΟϧλϦϯά͞ΕΔɺͱ͍͏
ɹέʔεग़ͯ͘Δ
ɹ- Γཚ༻ݫېʂʂ❌
ɹ- ͏ͱͨ͠ΒɺϦϦʔε࣌ࠁ·Ͱຊ൪ڥʹ
ɹ ઈରग़ͪ͠Ό͍͚ͳ͍ʹ Soft Delete తʹ
ʢ- Soft Delete ࣗମͷੋඇ͋Δʣ
ɾͷΒͳ͍᠘͕·ͩ·ͩ͋Γͦ͏ͳ
ɹؾ͢ΔͷͰੋඇڭ͍͑ͯͩ͘͞…$
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Enjoy your
ɹ Node.js life …