Google Cloud Datastore and Node.js example

datastore.js

'use strict';

const config = require('../config');
const Datastore = require("@google-cloud/datastore");

const datastore = Datastore({
    projectId: config.get('GCLOUD_PROJECT')
});

const kind = 'Question';

function create({
    quiz,
    author,
    title,
    answer1,
    answer2,
    answer3,
    answer4,
    correctAnswer
}) {
    const key = datastore.key(kind);
    const entity = {
        key,
        data: [{
                name: 'quiz',
                value: quiz
            },
            {
                name: 'author',
                value: author
            },
            {
                name: 'title',
                value: title
            },
            {
                name: 'answer1',
                value: answer1
            },
            {
                name: 'answer2',
                value: answer2
            },
            {
                name: 'answer3',
                value: answer3
            },
            {
                name: 'answer4',
                value: answer4
            },
            {
                name: 'correctAnswer',
                value: correctAnswer
            },
        ]
    };
    return datastore.save(entity);
}

function list(quiz = 'gcp', redact = true) {
  const query = datastore.createQuery([kind]).filter('quiz', '=', quiz);

  const result = datastore.runQuery(query);

  return result.then(([results, { moreResults, endCursor }]) => {
    const questions = results.map(item => {
      item.id = item[Datastore.KEY].id;
      if (redact) {
        delete item.correctAnswer;
      }
      return item;
    });
    return {
      questions,
      nextPageToken: moreResults != 'NO_MORE_RESULTS' ? endCursor : false
    };
  });
}

module.exports = {
    create,
    list
};