DNY node api (1 – setup) | Chinese Rule of Eight

download source
unzip the source code
go into directory and type npm install to install the modules
Once the packages are installed, run it npm run dev
Go to localhost:8080, then check terminal for logs

Set up

Open terminal, navigate to ‘Desktop’

mkdir dnyNodeAPI

cd dnyNodeAPI

npm init

press enter for all selections

npm install express

Then check your node_modules folder and you’ll see whole of packages being installed.

In our package.json file, change ‘main’: ‘index.js’ to ‘main’: ‘app.js’

Create file ‘app.js’:

const express = require('express')

const app = express()

app.get("/", (req, res) => {

console.log(this)

res.send("Hello world from DNY tourism app")

})

const port = 8080

app.listen(port, () => {

console.log(`DNY tourism app listening on port ${port}`)

})

in your terminal, if you went node app.js, it will run the server on port 8080.

But whenever we make a code change, we have to restart the server and this becomes cumbersome. So let’s install nodemon.

npm i nodemon

Then in your package.json:

"scripts": {

"dev": "nodemon app.js"

Now, in your terminal, Ctrl+C to get out of whatever is running.
Then npm run dev.
It will run the command as specified in our package.json and we get the server running with constant updates.

Putting in Routes

routes/posts.js

exports.getPosts = (req, res) => {

res.send("Hello world from DNY tourism app")

}

app.js

const express = require('express')

const app = express()

// bring in routes

const { getPosts } = require('./routes/post')

app.get("/", getPosts)

const port = 8080;

app.listen(port, () => {

console.log(`DNY tourism app listening on port ${port}`)

})

Install Middleware

npm i morgan

Installing Database

Create account in mLab, and create a database. Select default for everything, i.e AWS, server at Europe, and create submit. Then ‘create db user’, and create a username and pwd for the db’s user.

Then, in your project, create a file .env:

.env

1 2	MONGO_URI=mongodb://<username>:<password>@ds263368.mlab.com:63368/dny-tours-api PORT=8080

npm i dotenv

npm i mongoose

app.js

const express = require('express')

const app = express()

const mongoose = require('mongoose')

const morgan = require("morgan");

const dotenv = require('dotenv')

dotenv.config()

// db

mongoose.connect(process.env.MONGO_URI, { useNewUrlParser: true, useUnifiedTopology: true })

.then(() => console.log('DB Connected'))

mongoose.connection.on('error', err => {

console.log(`DB connection error ${err.message}`)

});

// bring in routes

const postRoutes = require('./routes/post')

app.use(morgan('dev'))

app.use("/", postRoutes)

const port = process.env.PORT || 8080;

app.listen(port, () => {

console.log(`DNY tourism app listening on port ${port}`)

})

post.js

const express = require('express')

const postController = require('../controllers/post')

// have access to router

const router = express.Router()

router.get('/', postController.getPosts)

module.exports = router;

post.js

exports.getPosts = (req, res) => {

//res.send("controllers/post.js - hello wordl from node js");

res.json({

posts: [{title: 'First post'}, {title: 'Second post'}]

})

}