103 lines
2.1 KiB
TypeScript
103 lines
2.1 KiB
TypeScript
import * as Sequelize from 'sequelize'
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import { isUserUsernameValid } from '../helpers'
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import { addMethodsToModel } from './utils'
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import {
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AuthorClass,
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AuthorInstance,
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AuthorAttributes,
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AuthorMethods
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} from './author-interface'
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let Author: Sequelize.Model<AuthorInstance, AuthorAttributes>
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let findOrCreateAuthor: AuthorMethods.FindOrCreateAuthor
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export default function defineAuthor (sequelize: Sequelize.Sequelize, DataTypes) {
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Author = sequelize.define<AuthorInstance, AuthorAttributes>('Author',
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{
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name: {
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type: DataTypes.STRING,
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allowNull: false,
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validate: {
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usernameValid: function (value) {
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const res = isUserUsernameValid(value)
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if (res === false) throw new Error('Username is not valid.')
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}
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}
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}
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},
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{
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indexes: [
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{
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fields: [ 'name' ]
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},
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{
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fields: [ 'podId' ]
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},
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{
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fields: [ 'userId' ],
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unique: true
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},
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{
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fields: [ 'name', 'podId' ],
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unique: true
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}
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]
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}
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)
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const classMethods = [ associate, findOrCreateAuthor ]
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addMethodsToModel(Author, classMethods)
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return Author
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}
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// ---------------------------------------------------------------------------
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function associate (models) {
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Author.belongsTo(models.Pod, {
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foreignKey: {
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name: 'podId',
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allowNull: true
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},
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onDelete: 'cascade'
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})
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Author.belongsTo(models.User, {
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foreignKey: {
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name: 'userId',
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allowNull: true
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},
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onDelete: 'cascade'
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})
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}
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findOrCreateAuthor = function (
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name: string,
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podId: number,
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userId: number,
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transaction: Sequelize.Transaction,
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callback: AuthorMethods.FindOrCreateAuthorCallback
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) {
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const author = {
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name,
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podId,
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userId
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}
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const query: any = {
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where: author,
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defaults: author
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}
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if (transaction !== null) query.transaction = transaction
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Author.findOrCreate(query).asCallback(function (err, result) {
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if (err) return callback(err)
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// [ instance, wasCreated ]
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return callback(null, result[0])
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})
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}
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