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31 lines
781 B
JavaScript
31 lines
781 B
JavaScript
const { DataTypes, Model } = require('sequelize')
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module.exports = (sequelize) => {
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class BookGenre extends Model { }
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BookGenre.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: 'BookGenre',
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timestamps: false
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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, Genre } = sequelize.models
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Book.belongsToMany(Genre, { through: BookGenre })
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Genre.belongsToMany(Book, { through: BookGenre })
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Book.hasMany(BookGenre)
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BookGenre.belongsTo(Book)
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Genre.hasMany(BookGenre)
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BookGenre.belongsTo(Genre)
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return BookGenre
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} |