laurenfazah

Authentication with an Express API and Postgres

Setting Up

Let's make sure our Express app has the required base modules:

# within root of API
npm install --save express pg knex bcrypt
npm install --save-dev nodemon

zcaceres

Nested Routers in Express.js

Express makes it easy to nest routes in your routers. But I always had trouble accessing the request object's .params when you had a long URI with multiple parameters and nested routes.

Let's say you're building routes for a website www.music.com. Music is organized into albums with multiple tracks. Users can click to see a track list. Then they can select a single track and see a sub-page about that specific track.

At our application level, we could first have a Router to handle any requests to our albums.

const express = require('express');

Naramsim

Requests examples

http://pokeapi.api-docs.io/v2.0

cURL

curl --request GET --url http://pokeapi.co/api/v2/pokemon/bulbasaur/

Wget

xuwang

#!/bin/bash
# Retrieve AWS instrance's commonly used metadata. Require curl.
# ./get-metadata help
# ./get-metadata id
 
# Input is case insensitive; format to uppper case to generate self-help page.
info=${1^^}
meta_data_url=http://169.254.169.254/latest/meta-data/
roleProfile=$(curl -s http://169.254.169.254/latest/meta-data/iam/info \
    | grep -Eo 'instance-profile/([a-zA-Z.-]+)' | sed 's#instance-profile/##')