Tulsi Prasad heytulsiprasad

401

This means, authorization is denied.

400

This means, authorization can't be completed due to something wrong in the client side.

Let's say we have a class component named, Trees.

We can import proptypes as such. import PropTypes from "prop-types"

Way 1

Outside of component itself. Best for Functional Components.

Making less costly queries

As an example, when we write db.students.find() and then do a forEach() loop over it, we are increasing the cost of the process as what we're doing is:

Fetching all students from to server
Running forEach on our server to filter data we need

To avoid getting uncessary data and decrease the load on our server we can do requests specific to our needs, like these.

db.students.find({}, {name: 1, email: 0}) # values with 1 show up, 0 don't

Definitely not comprehensive. This is meant to be a basic memory aid with links to get more details. I'll add to it over time.

Install

$ npm install mongoose --save

Connect

const mongoose = require('mongoose');

Full Stack Travel Log

A full stack application to store / list places you have traveled.

TODO

Setup Server
- Install Dependencies
- Install / Setup Linter
Setup Express App

Setup a Eslint config file

npx eslint --init

Common essential middlewares

Morgan: helps in logging server requests (dev and prod)
Helmet: removes unnecessary default server response and adds useful (most) secure headers
Cors: good ol' cors, allows access to make server requests

	const mongoose = require("mongoose")
	const Schema = mongoose.Schema

	// Create Schema
	const UserSchema = new Schema({
	name: {
	type: String,
	required: true,
	},
	email: {

	// get user when needed by this
	export const getUser = () => (dispatch, getState) => {
	// User loading
	dispatch({ type: "USER_LOADING"})

	axios
	.get('/api/auth/user', tokenConfig(getState))
	.then(res => {
	dispatch({
	type: "USER_LOADED",

	const mongoose = require("mongoose")
	const Schema = mongoose.Schema

	const BookSchema = new Schema({
	title: String,
	pages: Number
	})

	const AuthorSchema = new Schema({
	name: String,