Jamie Finlay jpfinlay

## ubuntu-16.04LTS-Rails-5.2-Ruby-2.5.1.md

      
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                jpfinlay
                / ubuntu-16.04LTS-Rails-5.2-Ruby-2.5.1.md
            
            
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              July 27, 2018 07:29
            
              
                Git 2.18 / OhMyZSH / Rbenv / Ruby 2.5.1 / Rails 5.2 / Postgres 9.5.13
              
          
    Ubuntu 16.04LTS with Rails 5.2, Ruby 2.5.1 and PostgeSQL 9.5.13

July 26, 2018

Install pre-requisites and Git (2.18.0)

$ sudo apt-get update && sudo apt-get upgrade
$ sudo apt install git-core zsh autoconf bison build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm3 libgdbm-dev -y
$ sudo apt-add-repository ppa:git-core/ppa && sudo apt-get update && sudo apt-get install git -y 
Create .gitconfig


## app.rake
namespace :app do

  desc "Ensures that the reset task only happens in development,
        not the production environment"
  task ensure_development_environment: :environment do
    if Rails.env.production?
      raise "Rake tasks aborted - you are running a production environment.\n
      (You are requesting that the production database is dropped!)"
    end
  end

## login_form.html.erb
<h1>Login</h1>

<%= form_tag author_sessions_path, method: :post do %>
  <div class="field">
    <%= label_tag :username %>
    <%= text_field_tag :username %>
    <br/>
  </div>
  <div class="field">
    <%= label_tag :password %>

## author_sessions_controller.rb
class AuthorSessionsController < ApplicationController
  def new
    @author = Author.new
  end

  def create
    @author = login(params[:username], params[:password])
    if @author
      redirect_back_or_to(articles_path, message: 'Logged in successfully.')
    else

## application.v2.html.erb
<body>
  <p class="flash">
    <%= flash.notice %>
  </p>
  <div id="container">
    <div id="content">
      <%= yield %>
      <hr>
      <h6>
        <% if logged_in? %>

## application.html.erb
<!DOCTYPE html>
<html>
<head>
  <title>Blogger</title>
  <%= stylesheet_link_tag    "application", media: "all" %>
  <%= javascript_include_tag "application" %>
  <%= csrf_meta_tags %>
</head>
<body>
<p class="flash">

## articles.css.scss
$light_gray: #CCC;

body {
  background-color: $light_gray;
  font: {
    family: Helvetica, Arial, sans-serif;
    size: 14px;
  }
}

## postgresql-cheatsheet
# Login as postgres user (superuser)
sudo -u postgres psql <db>

# Login to a db using a username
psql db_name -U username

# Create a new user and allow them to create databases
CREATE USER username WITH LOGIN;
ALTER ROLE username WITH CREATEDB;
	namespace :app do

	desc "Ensures that the reset task only happens in development,
	not the production environment"
	task ensure_development_environment: :environment do
	if Rails.env.production?
	raise "Rake tasks aborted - you are running a production environment.\n
	(You are requesting that the production database is dropped!)"
	end
	end
	<h1>Login</h1>

	<%= form_tag author_sessions_path, method: :post do %>
	<div class="field">
	<%= label_tag :username %>
	<%= text_field_tag :username %>
	<br/>
	</div>
	<div class="field">
	<%= label_tag :password %>
	class AuthorSessionsController < ApplicationController
	def new
	@author = Author.new
	end

	def create
	@author = login(params[:username], params[:password])
	if @author
	redirect_back_or_to(articles_path, message: 'Logged in successfully.')
	else
	<body>
	<p class="flash">
	<%= flash.notice %>
	</p>
	<div id="container">
	<div id="content">
	<%= yield %>
	<hr>
	<h6>
	<% if logged_in? %>
	<!DOCTYPE html>
	<html>
	<head>
	<title>Blogger</title>
	<%= stylesheet_link_tag "application", media: "all" %>
	<%= javascript_include_tag "application" %>
	<%= csrf_meta_tags %>
	</head>
	<body>
	<p class="flash">
	$light_gray: #CCC;

	body {
	background-color: $light_gray;
	font: {
	family: Helvetica, Arial, sans-serif;
	size: 14px;
	}
	}
	# Login as postgres user (superuser)
	sudo -u postgres psql <db>

	# Login to a db using a username
	psql db_name -U username

	# Create a new user and allow them to create databases
	CREATE USER username WITH LOGIN;
	ALTER ROLE username WITH CREATEDB;