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Building an API using a Node.js and Express

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

Instructions

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

You are allowed, and encouraged, to collaborate with other peers. Please follow the twenty-minute rule, before seeking support from your PM and Instructor.

Project Set Up

  • Create a forked copy of this project.
  • Add your project manager as collaborator on Github.
  • Clone your OWN version of the repository.
  • 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>.

Follow these steps for completing your project.

  • Submit a Pull-Request to merge Branch into master (student's Repository). Please don't merge your own pull request
  • Add your project manager as a reviewer on the pull-request
  • Your project manager will count the project as complete by merging the branch back into master.
  • Do your magic!

Minimum Viable Product

  1. Build an API to let clients perform CRUD operations on users and posts.
  2. Add an endpoint to retrieve the list of posts for a user.
  3. Write custom middleware to ensure that the user's name is upper-cased before the request reaches the POST or PUT route handlers.
  4. Use Express Routers to organize the endpoints. You can optionally move and rename postDb.js and userDb.js to place it next to the corresponding router.

Database Persistence Helpers

The /data/helpers folder includes helper files that you can use to manage the persistence of users and posts data. These files are userDb.js and 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 must be the id of an existing user

We have provided test data for the resources.

Stretch Goal

  • 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!