audiobookshelf/server/models/CollectionBook.js

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const { DataTypes, Model } = require('sequelize')
module.exports = (sequelize) => {
class CollectionBook extends Model { }
CollectionBook.init({
id: {
type: DataTypes.UUID,
defaultValue: DataTypes.UUIDV4,
primaryKey: true
}
}, {
sequelize,
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timestamps: true,
updatedAt: false,
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modelName: 'collectionBook'
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})
// Super Many-to-Many
// 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
book.belongsToMany(collection, { through: CollectionBook })
collection.belongsToMany(book, { through: CollectionBook })
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book.hasMany(CollectionBook)
CollectionBook.belongsTo(book)
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collection.hasMany(CollectionBook)
CollectionBook.belongsTo(collection)
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return CollectionBook
}