loopback-datasource-juggler/examples/relations.js

144 lines
4.2 KiB
JavaScript

var DataSource = require('../index').DataSource;
var ds = new DataSource('memory');
var Order = ds.createModel('Order', {
items: [String],
orderDate: Date
});
var Customer = ds.createModel('Customer', {
name: String
});
Order.belongsTo(Customer);
var order1, order2, order3;
Customer.create({name: 'John'}, function (err, customer) {
Order.create({customerId: customer.id, orderDate: new Date(), items: ['Book']}, function (err, order) {
order1 = order;
order.customer(console.log);
order.customer(true, console.log);
Customer.create({name: 'Mary'}, function (err, customer2) {
order.customer(customer2);
order.customer(console.log);
});
});
Order.create({orderDate: new Date(), items: ['Phone']}, function (err, order) {
order.customer.create({name: 'Smith'}, function(err, customer2) {
console.log(order, customer2);
order.save(function(err, order) {
order2 = order;
});
});
var customer3 = order.customer.build({name: 'Tom'});
console.log('Customer 3', customer3);
});
});
Customer.hasMany(Order, {as: 'orders', foreignKey: 'customerId'});
Customer.create({name: 'Ray'}, function (err, customer) {
Order.create({customerId: customer.id, orderDate: new Date()}, function (err, order) {
order3 = order;
customer.orders(console.log);
customer.orders.create({orderDate: new Date()}, function (err, order) {
console.log(order);
Customer.include([customer], 'orders', function (err, results) {
console.log('Results: ', results);
});
customer.orders.findById(order3.id, console.log);
customer.orders.destroy(order3.id, console.log);
});
});
});
var Physician = ds.createModel('Physician', {
name: String
});
var Patient = ds.createModel('Patient', {
name: String
});
var Appointment = ds.createModel('Appointment', {
physicianId: Number,
patientId: Number,
appointmentDate: Date
});
Appointment.belongsTo(Patient);
Appointment.belongsTo(Physician);
Physician.hasMany(Patient, {through: Appointment});
Patient.hasMany(Physician, {through: Appointment});
Physician.create({name: 'Dr John'}, function (err, physician1) {
Physician.create({name: 'Dr Smith'}, function (err, physician2) {
Patient.create({name: 'Mary'}, function (err, patient1) {
Patient.create({name: 'Ben'}, function (err, patient2) {
Appointment.create({appointmentDate: new Date(), physicianId: physician1.id, patientId: patient1.id},
function (err, appt1) {
Appointment.create({appointmentDate: new Date(), physicianId: physician1.id, patientId: patient2.id},
function (err, appt2) {
physician1.patients(console.log);
physician1.patients({where: {name: 'Mary'}}, console.log);
patient1.physicians(console.log);
// Build an appointment?
var patient3 = patient1.physicians.build({name: 'Dr X'});
console.log('Physician 3: ', patient3, patient3.constructor.modelName);
// Create a physician?
patient1.physicians.create({name: 'Dr X'}, function(err, patient4) {
console.log('Physician 4: ', patient4, patient4.constructor.modelName);
});
});
});
});
});
});
});
var Assembly = ds.createModel('Assembly', {
name: String
});
var Part = ds.createModel('Part', {
partNumber: String
});
Assembly.hasAndBelongsToMany(Part);
Part.hasAndBelongsToMany(Assembly);
Assembly.create({name: 'car'}, function (err, assembly) {
Part.create({partNumber: 'engine'}, function (err, part) {
assembly.parts.add(part, function (err) {
assembly.parts(function(err, parts) {
console.log('Parts: ', parts);
});
// Build an part?
var part3 = assembly.parts.build({partNumber: 'door'});
console.log('Part3: ', part3, part3.constructor.modelName);
// Create a part?
assembly.parts.create({partNumber: 'door'}, function(err, part4) {
console.log('Part4: ', part4, part4.constructor.modelName);
Assembly.find({include: 'parts'}, function(err, assemblies) {
console.log('Assemblies: ', assemblies);
});
});
});
});
});