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30 lines
833 B
JavaScript
30 lines
833 B
JavaScript
const { DataTypes, Model } = require('sequelize')
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module.exports = (sequelize) => {
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class CollectionBook extends Model { }
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CollectionBook.init({
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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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}, {
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sequelize,
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modelName: 'CollectionBook'
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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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CollectionBook.belongsTo(Book)
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Collection.hasMany(CollectionBook)
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CollectionBook.belongsTo(Collection)
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return CollectionBook
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} |