si93xx / express-get-musicians

Using express to GET all the musicians from Musicians DB

Express Musicians

Over the next series of lessons we will be building an application using Express that will be able to GET, POST, PUT, and DELETE musicians from Musicians DB

Setup

After forking and cloning the repository, run the following (npm run seed runs the seed file):

npm install
npm run seed
npm start

Part 1: GET Musicians

1. In the server.js file, create a new endpoint for when the browser makes a GET request to http://localhost:3000/musicians.
2. The endpoint will need to fetch these musicians from the database. Have a look at the Sequelize Model's findAll() method from last week to help you with this.
3. Send the musicians as a JSON Response (response.json()).
4. Test your endpoint by visiting http://localhost:3000/musicians. Your browser should output the following:

Part 2: Route Parameters

1. In the server.js file, create an express GET request to an endpoint for /musicians.
2. Include a route parameter of id as part of your /musicians endpoint.
3. The endpoint will need to fetch a musician from the database, based on the Router Parameters value - have a look at the Sequelize Model's findByPk() method to help you with this.
4. Create a response as a JSON object for the referenced musician object that was found in the database.
5. Test your endpoint using Postman: http://localhost:3000/musicians/1. Your browser should output the following:

Part 3: POST, PUT, and DELETE Musicians

1. In the server.js file, include necessary middleware for parsing data provided in the request of the body.
2. Create an express route for creating (adding) a new restaurant on your musician database. For example, /musicians via a POST request would create a new database entry based on what is contained in the HTTP request body.
3. Create an express route for updating (replacing) an existing musician with a new musician on your musician database based on ID. For example, /musicans/2 would update the musician with an ID of 2 with the content in the HTTP request body.
4. Create an express route for deleting (removing) a musician on your database. For example, musicians/2 would delete the musician with an ID of 2 from the database.
5. Test your endpoint using Postman and make sure to use the correct HTTP Verb when making your requests to your server.

Part 4: Express Router

1. Create a new directory for your express router(s).
2. Include a file within that directory to represent your express router
3. Define your express router to be able to handle creating, reading, updating, and deleting resources from your Musicians database
4. Export your router
5. Include a reference to your router in your main express server
6. Use the express router in your main server
7. Remove any pre-defined routes from your main server and use only your express router.
8. Test your endpoints using Postman. Make sure to test a GET, POST, PUT, and DELETE endpoint.

Part 5: Server Side Validation

1. Run npm install express-validator to install the Express Validator package
2. Include the check and validationResult methods from the Express Validator package in your Express Router for musicians.
3. Navigate to your POST Request route to /musicians from your Express Router and include a parameter [] in between the endpoint and the callback function.
4. Within the array [] include a first item which checks that the “name” field in the request.body is not empty and doesn’t only contain whitespace.
5. Within the array [] include a second item that checks that the “instrument” in the request.body is not empty and doesn’t only contain whitespace.
6. Within the callback function, validate the results of your checks and store them in a variable named errors.
7. Check that if the errors reference is not empty (there are errors), respond with a JSON that contains the key error and the value errors.array().
8. If the errors reference is empty (there are no errors), then continue with adding the musician to the Musicians DB and return a list of all the musicians including the newly added one.
9. Test your endpoint using Postman.
   • Check to see if you can add a musician without a value in the “name” field.
   • Check to see if you can add a musician without a value in the “instrument” field.