MyklClason

Overview

Warning: This guide intended for Rails 6.1. (It may not be complete)

This is direction for Migration from c9.io to AWS Cloud9 or to simply setup AWS Cloud9 for Rails Development, after you follow the cloud9 migration directions and created a workspace, keeping in mind the Workspace settings Section below.

Be sure you are using the right version of rails. You may need to remove rails and rail-ties and install rails 6.1. Check online for how (search how to reinstall rails with a specific version)

MyklClason

sudo service postgresql start
sudo sudo -u postgres psql
CREATE USER username SUPERUSER PASSWORD 'password';
\q
. ~/.bashrc
echo "export USERNAME=username" >> ~/.bashrc
echo "export PASSWORD=password" >> ~/.bashrc
. ~/.bashrc

sudo sudo -u postgres psql

MyklClason

For AWS Cloud9 setup of bash aliases, see https://gist.github.com/MyklClason/791d6b14606bc56e72eba2995aab8e76

MyklClason

# This is a very simple hash based graph utility class.
# By Mykl Clason
# https://gist.github.com/MyklClason/fe603a6005a1dedc6ec65fda7ff47f68
class Graph
  def self.undirected_graph_from_edges(edges)
    # Edges are (a,b) pairs with a => b and b => a relationships.
    edges.each_with_object(Hash.new { |h, k| h[k] = Set.new }) { |(k, v), h| h[k] << v }
  end
  
  def self.directed_graph_from_edges(edges)

MyklClason

# https://github.com/Shopify/erb-lint
linters:
  DeprecatedClasses:
    enabled: true
  FinalNewline:
    enabled: true
  ErbSafety:
    enabled: true
    exclude:
      - '**/node_modules/**'

MyklClason

module BootstrapNavHelper
  def navbar_text(nav_text)
    content_tag :span, class: "navbar_text" do
      nav_text
    end
  end
  
  def navbar_link_to(nav_text, nav_path, link_options = {})
    is_active = current_page?(nav_path)
    link_options[:class] = "#{link_options[:class]} nav-link"

MyklClason

<script>
  $(document).on('turbolinks:before-cache', function(e) {
    $('.form-control.select2, .form-control.select2-taggable, .form-control.select2-w-100').each(function() {
      if ($(this).data('select2')) {
        $(this).select2('destroy');
      }
    });
  });

  $('.form-control.select2, .form-control.select2-taggable, .form-control.select2-w-100').each(function() {

MyklClason

# Modified from the Twitter Bootstrap Rails gem's Bootstrap Flash Helper (bootstrap 3) for Bootstrap 4
# Place in the helpers folder
module BootstrapFlashHelper
  ALERT_TYPES = [
    :primary,
    :secondary,
    :success,
    :danger,
    :warning,
    :info,

MyklClason

module PrettyHelper
  def pretty_boolean(boolean)
    boolean ? "Yes" : "No"
  end

  def pretty_array(array, seperator: ";")
    array.to_a.join("; ")
  end

  def pretty_linked_record_array(array, field, new_window: true)

MyklClason

# Good solution for exporting to CSV in rails.
# Source: https://www.codementor.io/victorhazbun/export-records-to-csv-files-ruby-on-rails-vda8323q0

class UsersController < ApplicationController
  def index
    @users = User.all

    respond_to do |format|
      format.html
      format.csv { send_data @users.to_csv, filename: "users-#{Date.today}.csv" }