/node-api3-project

Starter Code for Node API 3 Afternoon Project

Primary LanguageJavaScriptOtherNOASSERTION

Express Middleware Module Project

In this challenge, you build an API and write custom middleware that satisfies the requirements listed under the Minimum Viable Product section.

Instructions

Task 1: Set Up The Project With Git

Follow these steps to set up and work on your project:

  • 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 the project on your newly created <firstName-lastName> branch, committing changes regularly.
  • Push commits: git push origin <firstName-lastName>.

Task 2: Minimum Viable Product

  • Write and implement four custom middleware functions, detailed below.
  • Build an API to let clients perform CRUD operations on users.
  • Add endpoints to retrieve the list of posts for a user and to store a new post for a user.

Custom Middleware Requirements

  • logger()

    • logger logs to the console the following information about each request: request method, request url, and a timestamp
    • this middleware runs on every request made to the API

  • validateUserId()

    • this middleware will be used for all endpoints that include an id parameter in the url (ex: /api/users/:id and it should check the database to make sure there is a user with that id. If there is no user with that id return HTTP status code 404 and a useful error message. If a user with that id is found, then let the request continue.
    • if the id parameter is valid, store that user object as req.user
    • if the id parameter does not match any user id in the database, respond with status 400 and { message: "invalid user id" }

  • validateUser()

    • validateUser validates the body on a request to create a new user
    • if the request body is missing, respond with status 400 and { message: "missing user data" }
    • if the request body lacks the required name field, respond with status 400 and { message: "missing required name field" }

  • validatePost()

    • validatePost validates the body on a request to create a new post
    • if the request body is missing, respond with status 400 and { message: "missing post data" }
    • if the request body lacks the required text field, respond with status 400 and { message: "missing required text field" }

Database Persistence Helpers

There are two helper files that you can use to manage the persistence of users and posts data. These files are users/userDb.js and posts/postDb.js. Both files publish the following api:

  • get(): calling find returns a promise that resolves to an array of all the resources contained in the database.
  • getById(): takes an id as the argument and returns a promise that resolves to the resource with that id if found.
  • insert(): calling insert passing it a resource object will add it to the database and return the new 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 count of updated records. If the count is 1 it means the record was updated correctly.
  • 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 userDb.js helper includes an extra method called getUserPosts() that when passed a user's id, returns a list of all the posts for the user.

All helper methods return a promise.

Database Schemas

The Database Schemas for the users and posts resources are:

Users
field data type metadata
id unsigned integer primary key, auto-increments, generated by database
name string required, unique
Posts
field data type metadata
id unsigned integer primary key, auto-increments, generated by database
text text required
user_id unsigned integer required, must be the id of an existing user

We have provided test data for the resources.

Task 3: Stretch Goals

  • Add the Post Router

    • Implement all endpoints and middleware within posts/postRouter.js

  • Create a React App

    • Use create-react-app to create an application inside the root folder, name it client.
    • From the React application connect to the /api/users endpoint in the API and show the list of users.
    • Add functionality to show the details of a user, including their posts, when clicking a user name in the list. Use React Router to navigate to a /users/:id route to show the user details.
    • Add styling!

Submission format

Follow these steps for completing your project.

  • Submit a pull request to merge <firstName-lastName> Branch into master (student's Repo). Please don't merge your own pull request