1. Generate a new app demo_devise

sudo rails new demo_devise

2. Add new gem into Gemfile and install it

gem "devise"

3. Install devise with this command:

rails g devise:install

4. Generate User model

rails g devise User

Check the migration to uncomment fields for required modules

Check the model User to include required modules

confirmable:

if enabled, after user signed up, he will receive an email also

5. Run migrate db

rails db:migrate

6. Generate home controller with index action

rails g controller home index

7. Adding controller myspace with index action and requires authenticated users

rails g controller myspace index

8. Adding .env file, and gem 'dotenv-rails' into development group

Now try to signup by email address, a new account will be created and can login.

TODO: customize email template

9. Now add Bootstrap into the app

Update importmaps.rb to add new npm packages

pin "popper", to: 'popper.js', preload: true

pin "bootstrap", to: 'bootstrap.min.js', preload: true

10. Update js in application.js

import "popper"

import "bootstrap

10. Add bootstrap gem and its dependency

gem "bootstrap"

gem "sassc-rails"

Then add into application.css

@import "bootstrap";

11. Update manifest.js to add new lines

//= link popper.js

//= link bootstrap.min.js

12. Update HTML page for the layout

13. Add Facebook authentication

We need to create an application, add all required information for Facebook to review.

Then implement the action to handle returned data, and create user in our database.