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Ruby on Rails 6: Learn 25+ gems and build a Startup MVP 2020
# All AWS C9 envments
https://eu-central-1.console.aws.amazon.com/cloud9/home?region=us-east-1
# Instance management
https://console.aws.amazon.com/ec2/home?region=eu-central-1#Instances:sort=instanceId
# Create AWS C9 environment
https://eu-central-1.console.aws.amazon.com/cloud9/home/create
Setting - set tabs to 2
Ctrl+E to search file
Alt+T - new terminal
Alt+W - close current tab
Ctrl+] - next tab
Ctrl+[ - prev tab
Ctrl+D - delete current line of code
Increase AWS storage size
https://docs.aws.amazon.com/cloud9/latest/user-guide/move-environment.html#move-environment-resize
//clean webpacker
bin/rails webpacker:clean
bin/rails tmp:clear
bin/rails log:clear
# install latest version of Ruby, Rails, Postgresql, Yarn, Webpacker
rails -v
ruby -v
rvm list
rvm install ruby-2.7.2
rvm --default use 2.7.2
rvm uninstall 2.7.1
rvm uninstall 2.7.0
rvm uninstall 2.6.3
rvm uninstall 2.6.5
gem install rails -v 6.0.3.4
gem update rails
gem update --system
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
sudo apt update
sudo apt install postgresql libpq-dev redis-server redis-tools yarn
ruby -v
rails -v
pg_config --version
# create rails app
rails new myappname --database=postgresql
cd myappname
bundle
yarn
# postgresql setup
sudo su postgres
createuser --interactive
ubuntu
y
exit
# to make the server work, add the url to development.rb
config.hosts << "2b8c1faf3a934c25b7e01d446161bfff.vfs.cloud9.us-east-1.amazonaws.com"
# start server
rails db:create
rails db:migrate
rails s
#Ruby on Rails
rvm install ruby-2.7.1
rvm --default use 2.7.1
rvm uninstall 2.6.5
rvm uninstall 2.6.6
rvm uninstall 2.6.3
gem install rails -v 5.2.4.3
#Postgresql
sudo apt install postgresql libpq-dev
sudo su postgres
createuser --interactive
ubuntu
y
exit
http://github.com/
git config --global user.name "Yaro"
git config --global user.email yshmarov@gmail.com
git init
git status
git add -A
git commit -m 'initialize app'
# https://github.com/new
git remote add origin https://github.com/yshmarov/rubygems.git
git push -u origin master
// delete last commit from github
git reset HEAD^ --hard
git push -f
// git uncheck last commit
git reset --soft HEAD~1
// git reset to specific commit
git reset --hard c14809fa
// forward-moving undo last commit
git revert HEAD
git add -A
git commit -m 'undo last commit'
// forward-moving undo commit-before-last-commit
git revert HEAD~1
git add -A
git commit -m 'undo commit-before-last-commit'
//check to which repo you are connected
git remote -v
//set remote repo
git remote set-url origin https://github.com/yshmarov/edurge.git
Git branches:
//Create branch
git checkout -b "i18n"
//Show all branches:
git branch
//Switch to master
git checkout master
//Merge "i18n" with master
git merge i18n
//Delete "i18n" branch
git branch -D i18n
//pull remote branch
git fetch origin stripe2
git checkout -b stripe2 origin/stripe2
http://heroku.com/
# creating the first page
rails g controller home index
# Add the following line to routes.rb
root 'home#index'
git add -A
git commit -m 'add home index controller'
# installing heroku
npm uninstall -g heroku-cli
sudo snap install heroku --classic
npm install -g heroku
heroku create
heroku buildpacks:add heroku/ruby
git remote -v
git push heroku master
heroku run rake db:migrate
# if you want to connect to an existing heroku app
heroku git:remote -a yourappnamegoeshere
# see logs
heroku logs --tail
# to run console activerecord commands
heroku run rails c
# restart
heroku restart
# log into heroku from console
heroku login -i
# clone app from heroku to local
heroku git:clone -a bobablack
https://edgeguides.rubyonrails.org/action_text_overview.html
// Console
rails action_text:install
// application.js
require("trix")
require("@rails/actiontext")
// actiontext.scss
@import "trix/dist/trix";
// application.scss
@import "./actiontext.scss";
// app/models/course.rb
class Course < ApplicationRecord
has_rich_text :description
end
// app/views/courses/_form.html.erb
<%= f.label :description %>
<%= f.rich_text_area :description %>
// application.html.haml
= render 'layouts/messages'
// _messages.html.haml
- flash.each do |name, msg|
- if msg.is_a?(String)
%div{:class => "alert alert-#{name.to_s == 'notice' ? 'success' : 'danger'}", :role => "alert"}
%button.close{"aria-hidden" => "true", "data-dismiss" => "alert", :type => "button"} ×
= content_tag :div, msg, :id => "flash_#{name}"
// courses_controller.rb
def index
if params[:title]
@courses = Course.where('title ILIKE ?', "%#{params[:title]}%") #case-insensitive
else
@courses = Course.all
end
end
// _header.html.haml
.form-inline.my-2.my-lg-0
= form_tag(courses_path, method: :get) do
.input-group
= text_field_tag :title, params[:title], autocomplete: 'off', placeholder: "Find a course", class: 'form-control-sm'
%span.input-group-append
%button.btn.btn-primary.btn-sm{:type => "submit"}
%span.fa.fa-search{"aria-hidden" => "true"}
CREATE CREDENTIALS & EDIT
rails credentials:edit
EDITOR=vim rails credentials:edit
WORKING WITH VIM
For inserting
Press i //Do required editing
For exiting
Press Esc
:wq //for exiting and saving
:q! //for exiting without saving
FIND A CREDENTIAL
rails c
Rails.application.credentials.dig(:aws, :access_key_id)
or if an env variable is used
Rails.application.credentials[Rails.env.to_sym][:aws][:access_key_id]
In production:
heroku config:set RAILS_MASTER_KEY=123456789
or
heroku config:set RAILS_MASTER_KEY=`cat config/master.key`
// courses_controller.rb
def index
if params[:name]
@courses = Course.published.approved.where('name ILIKE ?', "%#{params[:name]}%") #case-insensitive
#@courses = Course.where('name LIKE ?', "%#{params[:name]}%") #case-sensitive
#@courses = Course.where('LOWER(name) LIKE LOWER(?)', "%#{params[:name]}%") #make lowercase
else
@courses = Course.published.approved.all
end
end
// in any view:
.form-inline.my-2.my-lg-0
= form_tag(posts_path, method: :get) do
.input-group
= text_field_tag :name, params[:name], autocomplete: 'off', placeholder: "Find a post", class: 'form-control-sm'
%span.input-group-append
%button.btn.btn-primary.btn-sm{:type => "submit"}
%span.fa.fa-search{"aria-hidden" => "true"}
//inline elsif
vote_text = current_user&.voted_for?(@post) ? "No" : "Yes"
// gemfile:
gem 'wicked_pdf' #PDF for Ruby on Rails
gem 'wkhtmltopdf-binary', group: :development
gem 'wkhtmltopdf-heroku', group: :production
config/wicked_pdf.rb
WickedPdf.config ||= {}
WickedPdf.config.merge!({
#YOUR CONFIG HERE
})
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