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31 lines
751 B
JavaScript
31 lines
751 B
JavaScript
const { DataTypes, Model } = require('sequelize')
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module.exports = (sequelize) => {
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class BookTag extends Model { }
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BookTag.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: 'BookTag',
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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, Tag } = sequelize.models
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Book.belongsToMany(Tag, { through: BookTag })
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Tag.belongsToMany(Book, { through: BookTag })
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Book.hasMany(BookTag)
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BookTag.belongsTo(Book)
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Tag.hasMany(BookTag)
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BookTag.belongsTo(Tag)
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return BookTag
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} |