dynogels/examples/basic.js

DynamoDB data mapper

'use strict';

const dynogels = require('../index');
const _ = require('lodash');
const util = require('util');
const AWS = dynogels.AWS;
const Joi = require('joi');

AWS.config.loadFromPath(`${process.env.HOME}/.ec2/credentials.json`);

const Account = dynogels.define('Foobar', {
  hashKey: 'email',
  schema: {
    email: Joi.string(),
    name: Joi.string(),
    age: Joi.number(),
    scores: dynogels.types.numberSet(),
    created: Joi.date().default(Date.now, 'now'),
    list: Joi.array(),
    settings: {
      nickname: Joi.string(),
      luckyNumber: Joi.number().min(1).default(7)
    }
  }
});

const printAccountInfo = (err, acc) => {
  if (err) {
    console.log('got error', err);
  } else if (acc) {
    console.log('got account', acc.get());
  } else {
    console.log('account not found');
  }
};

const printScanResults = (err, data) => {
  if (err) {
    console.log('got scan error', err);
  } else if (data.Items) {
    const items = _.map(data.Items, d => d.get());
    console.log('scan finished, got ', util.inspect(items, { showHidden: false, depth: null }));
  } else {
    console.log('scan returned empty result set');
  }
};

dynogels.createTables(err => {
  if (err) {
    console.log('failed to create table', err);
  }

  // Simple get request
  Account.get('test11@example.com', printAccountInfo);
  Account.get('test@test.com', printAccountInfo);

  // Create an account
  const params = {
    email: 'test11@example.com', name: 'test 11', age: 21, scores: [22, 55, 44],
    list: ['a', 'b', 'c', 1, 2, 3],
    settings: { nickname: 'tester' }
  };

  Account.create(params, (err, acc) => {
    printAccountInfo(err, acc);

    acc.set({ name: 'Test 11', age: 25 }).update(err => {
      console.log('account updated', err, acc.get());
    });
  });

  Account.scan().exec(printScanResults);
});