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Install Ruby On Rails on Ubuntu 18.04 Bionic Beaver

Table of Contents

1. Overview
2. Installing Prerequisites
3. Installing Ruby with ruby-build
4. Working with Gems
5. Installing Rails
6. Updating rbenv
7. Uninstalling rbenv

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JavaScript Cheat Sheet

Common Commands and Description

Command	Description
cd	Change directory

Including JavaScript in an HTML Page

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Personal Finance with Family

They say don’t mix money and friends. In my case, I have chosen not to mix money and family any more.

I recently found myself in the situation of having to say no when my parents asked me for a €10,000 loan to fund construction work on a beautiful property in Europe that they’ve been turning into a family-run B&B and wedding venue.

This was not the first time they had found themselves in a tight spot. Four years previously, when I was 23, I’d loaned them €10,000 and had a strenuous time getting paid back.

Hit by the 2008 financial crisis, declining revenues from my father’s business and a credit crunch, my parents have been relying more and more on their kids for financial help. But when they asked me recently if I could loan them the lump sum, I declined.

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MongoDB - https://www.tutorialspoint.com/mongodb/index.htm

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remote:  !     Failed to install gems via Bundler.
remote:  !     Detected sqlite3 gem which is not supported on Heroku:
remote:  !     https://devcenter.heroku.com/articles/sqlite3
remote:  !

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Markdown Cheat Sheet

Headers

H1

H2

H3

H4

H5

H6

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require 'jwt'

payload = { data: 'test' }
hmac_secret = 'my$ecretK3y'

token = JWT.encode(payload, hmac_secret, 'HS256')
#eyJhbGciOiJIUzI1NiJ9.eyJkYXRhIjoidGVzdCJ9.pNIWIL34Jo13LViZAJACzK6Yf0qnvT_BuwOxiMCPE-Y

puts token

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#config/routes.rb

namespace :api do
  namespace :v1 do
    post 'signin', to: 'authentication#create'
  end
end

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# app/controllers/authentication_controller.rb

class AuthenticationController < ApplicationController
  skip_before_action :authenticate_request

  def create
    command = AuthenticateUser.call(params[:email], params[:password])

    if command.success?
      render json: { auth_token: command.result }

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# app/services/authorize_api_request.rb

class AuthorizeApiRequest

  def initialize(headers = {})
    @headers = headers
  end

  def call
    { user: user }