vjefri

/* ES6 the Lazy Way */

var nums = [1, 2, 3, 4, 5, 6]

// You don't have to use braces when it is a simple expression
// No need to say return, it just knows
// The fat arrow is creating the function 
// If we have one arg, no need to add parens 
var odds = nums.map(v => v + 1); // [ 2, 3, 4, 5, 6, 7 ]

vjefri

// This does not loose scope with fat arrow
var bob = {
  _name: "Bob",
  _friends: ["Jon", "Daenerys", "Arya", "Tyrion"],
  printFriends() {
    this._friends.forEach(f => // this === bob
      console.log(this._name + " knows " + f)); // this === bob ("I should be undefined but I am bob")
  }
}
/*

vjefri

const http = require('http');

const hostname = '127.0.0.1';
const port = 3000;

const server = http.createServer((req, res) => {
  res.statusCode = 200;
  res.setHeader('Content-Type', 'text/plain');
  res.end('Hello World\n');
});

vjefri

/*
  Pseudoclassical Instantiation Pattern
*/

var Planet = function(water, life) {
  // this = Object.create(Planet.prototype)(NOTE: done behind the scenes in Pseudoclassical)

  // the keyword this delegates failed lookups to its prototype
  // its prototype has the method rotationSpeed
  // console.log(this); // => { prototype: {rotationSpeed: function(){this.speed++}}}

vjefri

# Easier navigation: .., ..., ...., ....., ~ and -
alias ..="cd .."
alias ...="cd ../.."
alias ....="cd ../../.."
alias .....="cd ../../../.."
alias ~="cd ~" # `cd` is probably faster to type though
alias -- -="cd -"

# Shortcuts

vjefri

// users_controller.js
    index() {

      User.query()
        .where({tweets__body__icontains: 'Minecraft'}) // add me
        .join('tweets', {body__icontains: 'Minecraft'}) // add me
        .end((err, models) => {
          this.respond(err || models, ['tweets']); // add me
        });

vjefri

  // models/user.js
  
  'use strict';

  const Nodal = require('nodal');
  const Tweet = Nodal.require('app/models/tweet.js'); // import me
  
  User.setDatabase(Nodal.require('db/main.js'));
  User.setSchema(Nodal.my.Schema.models.User);
  User.joinedBy(Tweet); // add me

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  // models/tweet.js
  
  'use strict';

  const Nodal = require('nodal');
  const User = Nodal.require('app/models/user.js'); // import me

  class Tweet extends Nodal.Model {}

  Tweet.setDatabase(Nodal.require('db/main.js'));

vjefri

/**
 * 
 * You should be receiving all the tweets that contain Minecraft
 * 
 * */

{
  "meta": {
    "total": 1,
    "count": 1,

vjefri

npm install -g nodal
nodal new todo-pgjson
cd todo-pgjson
nodal g:model Todo user_id:int tasks:json done:boolean
nodal g:controller --for Todos
nodal db:bootstrap

// add json data to seed.json

nodal db:seed