Sprint Challenge Instructions

Read these instructions carefully. Understand exactly what is expected before starting this Sprint Challenge.

This challenge allows you to practice the concepts and techniques learned over the past sprint and apply them in a concrete project. This sprint explored how to build web services based on the REST (REpresentational State Transfer) architectural style. During this sprint, you studied Node.js and Express, server side routing, how to write Express middleware and how to deploy an API to Heroku. In your challenge this week, you will demonstrate your mastery of these skills by designing and creating a web API to manage the following resources: Projects and Actions.

This is an individual assessment. All work must be your own. Your challenge score is a measure of your ability to work independently using the material covered through this sprint. You need to demonstrate proficiency in the concepts and objectives introduced and practiced in preceding days.

You are not allowed to collaborate during the sprint challenge. However, you are encouraged to follow the twenty-minute rule and seek support if you need direction.

You have three hours to complete this challenge. Plan your time accordingly.

Introduction

In meeting the minimum viable product (MVP) specifications listed below, your project should provide an API that has Create, Read, Update and Delete (CRUD) functionality for both projects and actions.

Database Schemas

The description of the structure and extra information about each resource stored in the included database (./data/lambda.db3) is listed below.

Projects

Field Data Type Metadata
id number no need to provide it when creating projects, the database will generate it
name string required
description string required
completed boolean used to indicate if the project has been completed, not required

Actions

Field Data Type Metadata
id number no need to provide it when creating posts, the database will automatically generate it
project_id number required, must be the id of an existing project
description string up to 128 characters long, required
notes string no size limit, required. Used to record additional notes or requirements to complete the action
completed boolean used to indicate if the action has been completed, not required

Database Persistence Helpers

The project includes models you can use to manage the persistence of project and action data. These files are api/projects/projects-model.js and api/actions/actions-model.js. Both files publish the following api, which you can use to store, modify and retrieve each resource:

All these helper methods return a promise. Remember to use .then().catch() or async/await.

  • get(): resolves to an array of all the resources contained in the database. If you pass an id to this method it will return the resource with that id if one is found.
  • insert(): calling insert passing it a resource object will add it to the database and return the newly created resource.
  • update(): accepts two arguments, the first is the id of the resource to update, and the second is an object with the changes to apply. It returns the updated resource. If a resource with the provided id is not found, the method returns null.
  • remove(): the remove method accepts an id as it's first parameter and, upon successfully deleting the resource from the database, returns the number of records deleted.

The projects-model.js includes an extra method called getProjectActions() that takes a project id as its only argument and returns a list of all the actions for the project.

We have provided test data for all the resources.

Interview Questions

Be prepared to demonstrate your understanding of this week's concepts by answering questions on the following topics. You might prepare by writing down your own answers before hand.

  1. The core features of Node.js and Express and why they are useful.
  2. Understand and explain the use of Middleware.
  3. The basic principles of the REST architectural style.
  4. Understand and explain the use of Express Routers.
  5. Describe tooling used to manually test the correctness of an API.

Instructions

Project Structure and Dependencies

  • Do not move or rename existing files or folders.
  • All necessary libraries are already installed in the project.

Task 1: Project Set Up

  • Create a forked copy of this project.
  • Clone your OWN version of the repository (Not Lambda's by mistake!).
  • Create a new branch: git checkout -b <firstName-lastName>.
  • Implement MVP on your newly created <firstName-lastName> branch.
  • Commit & push your code regularly and meaningfully.

Task 2: Project Requirements (MVP)

Your finished project must include all of the following requirements:

NPM Scripts

A "test" script already exists you can use to run tests against your code.

  • Write an npm script named "start" that uses node to run the API server.
  • Write an npm script named "server" that uses nodemonto run the API server.
  • Use nodemon as a development time dependency only that is not deployed to production.

Build an API

  • Inside api/actions/actions-router.js build endpoints for performing CRUD operations on actions:

    • [GET] /api/actions sends an array of actions (or an empty array) as the body of the response.
    • [GET] /api/actions/:id sends an action with the given id as the body of the response.
    • [POST] /api/actions sends the newly created action as the body of the response.
    • [PUT] /api/actions/:id sends the updated action as the body of the response.
    • [DELETE] /api/actions/:id sends no response body.
  • Inside api/projects/projects-router.js build endpoints for performing CRUD operations on projects:

    • [GET] /api/projects sends an array of projects (or an empty array) as the body of the response.
    • [GET] /api/projects/:id sends a project with the given id as the body of the response.
    • [POST] /api/projects sends the newly created project as the body of the response.
    • [PUT] /api/projects/:id sends the updated project as the body of the response.
    • [DELETE] /api/projects/:id sends no response body.
  • Inside api/projects/projects-router.js add an endpoint for retrieving the list of actions for a project:

    • [GET] /api/projects/:id/actions sends an array of actions (or an empty array) as the body of the response.
  • When adding an action, make sure the project_id provided belongs to an existing project.

  • If you try to add an action with an id of 3 and there is no project with that id the database will return an error.

  • Use an HTTP client like HTTPie, Postman or Insomnia to test the API's endpoints.

  • Use Express Routers to organize your endpoints.

  • Your server.js file lives inside the api folder.

  • Your index.js file lives at the root of the project.

Task 3: Stretch Goals

IMPORTANT: Work on stretch goals on a different branch. You can branch off <firstName-lastName> by executing git checkout -b stretch.

After finishing your required elements, you can push your work further. These goals may or may not be things you have learned in this module but they build on the material you just studied. Time allowing, stretch your limits and see if you can deliver on the following optional goals:

  • Deploy the API to Heroku.
  • Configure the API to support environment variables.
  • Use middleware for validation of incoming data.

Submission format

There are two possible ways to submit this project to Canvas. Lambda Staff will let you know which one applies:

  1. Submitting a pull request to merge <firstName-lastName> (or stretch if you finished any stretch goals) branch into main.
  2. Setting up your fork settings on Github to submit via Codegrade by pushing commits to your <firstName-lastName> branch.