65 lines
1.4 KiB
JavaScript
65 lines
1.4 KiB
JavaScript
const { DataTypes, Model } = require('sequelize')
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class CollectionBook extends Model {
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constructor(values, options) {
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super(values, options)
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/** @type {UUIDV4} */
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this.id
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/** @type {number} */
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this.order
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/** @type {UUIDV4} */
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this.bookId
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/** @type {UUIDV4} */
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this.collectionId
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/** @type {Date} */
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this.createdAt
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}
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static removeByIds(collectionId, bookId) {
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return this.destroy({
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where: {
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bookId,
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collectionId
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}
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})
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}
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static init(sequelize) {
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super.init(
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{
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id: {
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type: DataTypes.UUID,
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defaultValue: DataTypes.UUIDV4,
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primaryKey: true
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},
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order: DataTypes.INTEGER
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},
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{
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sequelize,
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timestamps: true,
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updatedAt: false,
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modelName: 'collectionBook'
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}
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)
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// Super Many-to-Many
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// ref: https://sequelize.org/docs/v6/advanced-association-concepts/advanced-many-to-many/#the-best-of-both-worlds-the-super-many-to-many-relationship
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const { book, collection } = sequelize.models
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book.belongsToMany(collection, { through: CollectionBook })
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collection.belongsToMany(book, { through: CollectionBook })
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book.hasMany(CollectionBook, {
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onDelete: 'CASCADE'
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})
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CollectionBook.belongsTo(book)
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collection.hasMany(CollectionBook, {
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onDelete: 'CASCADE'
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})
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CollectionBook.belongsTo(collection)
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}
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}
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module.exports = CollectionBook
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