Created
November 22, 2017 00:36
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Generates Fake Data for a Realm
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| import * as Realm from 'realm'; | |
| import * as faker from 'faker' | |
| import * as _ from 'lodash' | |
| // Product | |
| export const ProductSchema: Realm.ObjectSchema = { | |
| name: 'Product', | |
| properties: { | |
| productId: 'string', | |
| name: 'string', | |
| price: 'float', | |
| company: { type: 'Company' } | |
| } | |
| } | |
| export type Product = { | |
| productId: string | |
| name: string | |
| price: number, | |
| company: Company | |
| } | |
| // Company | |
| export const CompanySchema: Realm.ObjectSchema = { | |
| name: 'Company', | |
| primaryKey: 'companyId', | |
| properties: { | |
| companyId: 'string', | |
| name: 'string', | |
| address: 'string' | |
| } | |
| } | |
| export type Company = { | |
| companyId: string | |
| name: string | |
| address: string | |
| } | |
| // Order | |
| export const OrderSchema: Realm.ObjectSchema = { | |
| name: 'Order', | |
| primaryKey: 'orderId', | |
| properties: { | |
| orderId: 'string', | |
| timestamp: 'date', | |
| products: { type: 'list', objectType: 'Product' }, | |
| user: { type: 'User' } | |
| } | |
| } | |
| export type Order = { | |
| orderId: string | |
| timestamp: Date | |
| products: Realm.List<Product> | Product[], | |
| user: User | |
| } | |
| // User | |
| export const UserSchema: Realm.ObjectSchema = { | |
| name: 'User', | |
| primaryKey: 'userId', | |
| properties: { | |
| userId: 'string', | |
| firstName: 'string', | |
| lastName: 'string', | |
| address: { type: 'string', optional: true } | |
| } | |
| } | |
| export type User = { | |
| userId: string | |
| firstName: string | |
| lastName: string | |
| address?: string | |
| } | |
| export function fakeDataRealm() { | |
| const realm = new Realm({ schema: [ProductSchema, CompanySchema, OrderSchema, UserSchema] }) | |
| realm.write(() => { | |
| realm.deleteAll() | |
| }) | |
| let companies: Company[] = [] | |
| realm.write(() => { | |
| for (let index = 0; index < 200; index++) { | |
| let c = realm.create<Company>(CompanySchema.name, { | |
| companyId: faker.random.uuid(), | |
| name: faker.company.companyName(), | |
| address: faker.address.streetAddress(), | |
| }, true) | |
| companies.push(c) | |
| } | |
| }) | |
| console.log('Created Companies') | |
| let products: Product[] = [] | |
| realm.write(() => { | |
| for (let index = 0; index < 300; index++) { | |
| let p = realm.create<Product>(ProductSchema.name, { | |
| productId: faker.random.uuid(), | |
| name: faker.commerce.productName(), | |
| price: faker.random.number({min: 0, max: 5000}), | |
| company: _.sample(companies) | |
| }, true) | |
| products.push(p) | |
| } | |
| }) | |
| console.log('Created Products') | |
| let users: User[] = [] | |
| realm.write(() => { | |
| for (let index = 0; index < 300; index++) { | |
| let u = realm.create<User>(UserSchema.name, { | |
| userId: faker.random.uuid(), | |
| firstName: faker.name.firstName(), | |
| lastName: faker.name.lastName(), | |
| address: faker.address.streetAddress() | |
| }, true) | |
| users.push(u) | |
| } | |
| }) | |
| console.log('Created Users') | |
| let orders: Order[] = [] | |
| realm.write(() => { | |
| for (let index = 0; index < 3000; index++) { | |
| let o = realm.create<Order>(OrderSchema.name, { | |
| orderId: faker.random.uuid(), | |
| timestamp: faker.date.recent(600), // a date from the last 300 days | |
| products: _.sampleSize(products, faker.random.number({min: 1, max: 30})), | |
| user: _.sample(users) | |
| }, true) | |
| orders.push(o) | |
| } | |
| }) | |
| console.log('Created Orders') | |
| } | |
| fakeDataRealm() | |
| process.exit(0) |
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