134 lines
3.2 KiB
JavaScript
134 lines
3.2 KiB
JavaScript
// Copyright IBM Corp. 2014,2016. All Rights Reserved.
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// Node module: loopback-datasource-juggler
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// This file is licensed under the MIT License.
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// License text available at https://opensource.org/licenses/MIT
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'use strict';
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const jdb = require('../index');
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let User, Post, Passport, City, Street, Building;
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const nbSchemaRequests = 0;
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setup(function() {
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Passport.find({include: 'owner'}, function(err, passports) {
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console.log('passports.owner', passports);
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});
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User.find({include: 'posts'}, function(err, users) {
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console.log('users.posts', users);
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});
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Passport.find({include: {owner: 'posts'}}, function(err, passports) {
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console.log('passports.owner.posts', passports);
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});
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Passport.find({
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include: {owner: {posts: 'author'}},
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}, function(err, passports) {
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console.log('passports.owner.posts.author', passports);
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});
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User.find({include: ['posts', 'passports']}, function(err, users) {
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console.log('users.passports && users.posts', users);
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});
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});
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function setup(done) {
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const db = new jdb.DataSource({connector: 'memory'});
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City = db.define('City');
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Street = db.define('Street');
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Building = db.define('Building');
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User = db.define('User', {
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name: String,
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age: Number,
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});
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Passport = db.define('Passport', {
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number: String,
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});
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Post = db.define('Post', {
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title: String,
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});
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Passport.belongsTo('owner', {model: User});
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User.hasMany('passports', {foreignKey: 'ownerId'});
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User.hasMany('posts', {foreignKey: 'userId'});
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Post.belongsTo('author', {model: User, foreignKey: 'userId'});
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db.automigrate(function() {
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let createdUsers = [];
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let createdPassports = [];
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let createdPosts = [];
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createUsers();
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function createUsers() {
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clearAndCreate(
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User,
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[
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{name: 'User A', age: 21},
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{name: 'User B', age: 22},
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{name: 'User C', age: 23},
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{name: 'User D', age: 24},
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{name: 'User E', age: 25},
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],
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function(items) {
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createdUsers = items;
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createPassports();
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}
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);
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}
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function createPassports() {
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clearAndCreate(
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Passport,
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[
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{number: '1', ownerId: createdUsers[0].id},
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{number: '2', ownerId: createdUsers[1].id},
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{number: '3'},
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],
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function(items) {
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createdPassports = items;
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createPosts();
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}
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);
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}
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function createPosts() {
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clearAndCreate(
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Post,
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[
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{title: 'Post A', userId: createdUsers[0].id},
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{title: 'Post B', userId: createdUsers[0].id},
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{title: 'Post C', userId: createdUsers[0].id},
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{title: 'Post D', userId: createdUsers[1].id},
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{title: 'Post E'},
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],
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function(items) {
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createdPosts = items;
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done();
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}
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);
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}
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});
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}
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function clearAndCreate(model, data, callback) {
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const createdItems = [];
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model.destroyAll(function() {
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nextItem(null, null);
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});
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let itemIndex = 0;
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function nextItem(err, lastItem) {
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if (lastItem !== null) {
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createdItems.push(lastItem);
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}
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if (itemIndex >= data.length) {
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callback(createdItems);
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return;
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}
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model.create(data[itemIndex], nextItem);
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itemIndex++;
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}
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}
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