rails-training

Ruby on Rails Getting Started.

Install Rails

gem install rails

Create Rails Application

rails new blog

Develop on Existing Project

Install Javascript Dependencies

yarn install

Install Gems and Rails Dependencies

bundle install

Make migrations

rails db:migrate

Run Server and play with Rails!

rails server

---

SOURCE: Development Installation

Deploy to Heroku

This steps are a summary to deploy Rails app to Heroku.

Upgrade Rails app

If we have a previous Rails app created we need to add the respective gem, because Heroku does not support sqlite3

In Gemfile add:

gem `pg`

and install the new gem inside the project with:

bundle install

Change database adaptor and databases names in config/database.yml

  # ...
  adapter: postgresql
  # ...
  development:
    <<: *default
    database: database_development
  # ...
  test:
    <<: *default
    database: database_test
  # ...
  production:
    <<: *default
    database: database_production
    username: user
    password: password
  #...(Shorcut to skip lines)

Finally run in terminal:

rails db:create
rails db:migrate

Enviroment Configuration Ruby Add next code to config/environments/production.rb

config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?

if ENV["RAILS_LOG_TO_STDOUT"].present?
  logger           = ActiveSupport::Logger.new(STDOUT)
  logger.formatter = config.log_formatter
  config.logger = ActiveSupport::TaggedLogging.new(logger)
end

Deploy App Heroku

To made possible this step we should start a git repository. And we need to have installed heroku-cli.

In the project directory type:

heroku create

Add Build Pack for Ruby This help us to install Ruby Dependencies and Gems

heroku buildpacks:set heroku/ruby

Then we need to push local repository to Heroku:

git push heroku main

Create and Migrate Database on Heroku App This line creates a database with the hooby-dev plan:

heroku addons:create heroku-postgresql:hobby-dev

Finally we need to migrate database on heroku app:

heroku run rake db:migrate

Create Heroku Procfile

In root path of project we need to add a Procfile and write:

web: bundle exec puma -C config/puma.rb

or

web: rails server

This file works with puma.rb file, for maximun performance visit Heroku Puma documentation

Run Heroku locally

Procfile can be used locally, we need to add some .envvariables with:

echo "RACK_ENV=development" >>.env
echo "PORT=3000" >> .env

Do not forget to add this file to .gitignore.

Now we can run heroku:

heroku local

Commit new changes and push to heroku app:

git push heroku main

If we need to push changes from another branch use:

git push heroku branch_name:main

This will access to devDependencies in our package.json Skip Pruning

Visit your App

In my case the app was deployed in the next URL:

https://sangeekyonrails.herokuapp.com/

---

Sources:

• Getting started with Rails
• Postgres Database in Heroku
• Heroku Puma documentation

Add Bootstrap in Rails 6

Rails 6 includes, webpacker that allows us the use of webpack; webpack is a static module bundler for modern JavaScript applications. Webpack Concepts

Bootstrap need the following packages:

1. Bootstrap
2. jQuery

Add packages with Yarn

Yarn add bootstrap jquery popper.js

Add new dependencies to Webpack

Navigate to config/webpack/environment.js and add to webpack settings the next code:

const { environment } = require('@rails/webpacker');

const webpack = require('webpack');

environment.plugins.append(
  'Provide',
  new webpack.ProvidePlugin({
    $: 'jquery',
    jQuery: 'jquery'
  })
);

module.exports = environment;

This will add bootstrap as new dependencies for Rails and webpack.

Go to app/javascript/packs/application.js to import bootstrap in our views

import 'bootstrap'
import "@fortawesome/fontawesome-free/js/all"
import Rails from "@rails/ujs"
import Turbolinks from "turbolinks"
import * as ActiveStorage from "@rails/activestorage"
import "channels"

Rails.start()
Turbolinks.start()
ActiveStorage.start()

Add bootstrap to stylesheet assets

Finally we need to create a .scss and import bootstrap, go to app/assets/stylesheets/ and create the file application.scss and add the next line:

@import 'bootstrap/scss/bootstrap';

Start using bootstrap in your views

Now we can start using bootstrap in all our views !

<%= link_to 'Delete',
            article_path(@article),
            method: :delete, data: { confirm: 'Are you sure?' },
            class: "btn btn-outline-danger" %>

Source: How to Install Bootstrap in Rails 6