A Ruby on Rails Application without models

This blog is a quick walkthrough of creating a Ruby On Rails application without a model.

Find Rails new options from here:
https://gist.github.com/abhilashak/3c0c62fa62b2f7a439c417b68d032575

Find Gemfile options from here:

http://bundler.io/v1.2/gemfile.html

Install Ruby/Rails using rbenv

$ touch .rbenv-gemsets
$ echo project-name > .rbenv-gemsets
$ rbenv gemset active
$ rbenv install 2.5.3
$ gem install bundler
$ rbenv rehash
$ gem install rails -v 5.2.9
$ rbenv rehash
$ rails new my-new-porject --skip-active-record --skip-bundle -v 5.2.9

Add in Gemfile:

ruby “2.5.3”

comment jbuilder, we don’t need it.

# gem 'jbuilder', '~> 2.8’

Move rbenv gems file to new rails app folder

$ mv .rbenv-gemsets my-new-porject

$ touch .ruby-version

$ echo 2.5.3 > .ruby-version

$ gem install bundler

$ bundle

$ ruby -v
ruby 2.5.3p105 (2018-10-18 revision 65156) [x86_64-darwin18]

Start Rails server:

$ rails s

Gemfile add:

# Bootstrap Theme

gem 'bootstrap', '~> 4.3.0’

# Slim template Engine

gem 'slim', '>=4.0.1’

Do Bundle Install

$ bundle

Rename css to scss because we use bootsrap mixins and variables that work with scss files

$ mv app/assets/stylesheets/application.css app/assets/stylesheets/application.scss

Import Bootstrap styles in app/assets/stylesheets/application.scss:

// Custom bootstrap variables must be set or imported *before* bootstrap.
@import "bootstrap";

Then, remove all the *= require and *= require_tree statements from the Sass file. Instead, use @import to import Sass files.

Bootstrap JavaScript depends on jQuery
Add jquery-rails to Gemfile:

gem 'jquery-rails', '~> 4.3.4’

Bootstrap tooltips and popovers depend on popper.js for positioning.
Add Bootstrap dependencies and Bootstrap to your application.js:

//= require jquery3
//= require popper
//= require bootstrap-sprockets

While bootstrap-sprockets provides individual Bootstrap components for ease of debugging, you may alternatively require the concatenated bootstrap for faster compilation:

//= require jquery3
//= require popper
//= require bootstrap

Sass: Individual components

All Bootstrap opponents will be imported by default.
You can also import components explicitly. To start with a full list of modules copy _bootstrap.scss file into your assets as _bootstrap-custom.scss. Then comment out components you do not want from _bootstrap-custom. In the application Sass file, replace @import ‘bootstrap’ with:

@import 'bootstrap-custom';

Your application.css:

/*
 * This is a manifest file that'll be compiled into application.css, which will include all the files
 * listed below.
 *
 * Any CSS and SCSS file within this directory, lib/assets/stylesheets, or any plugin's
 * vendor/assets/stylesheets directory can be referenced here using a relative path.
 *
 * You're free to add application-wide styles to this file and they'll appear at the bottom of the
 * compiled file so the styles you add here take precedence over styles defined in any other CSS/SCSS
 * files in this directory. Styles in this file should be added after the last require_* statement.
 * It is generally better to create a new file per style scope.
 *
 */

/*Custom bootstrap variables must be set or imported *before* bootstrap.
  The available variables can be found: 
  https://github.com/twbs/bootstrap-rubygem/blob/master/assets/stylesheets/bootstrap/_variables.scss
*/
@import "bootstrap";

Your application.js File:

// This is a manifest file that'll be compiled into application.js, which will include all the files
// listed below.
//
// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, or any plugin's
// vendor/assets/javascripts directory can be referenced here using a relative path.
//
// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
// compiled file. JavaScript code in this file should be added after the last require_* statement.
//
// Read Sprockets README (https://github.com/rails/sprockets#sprockets-directives) for details
// about supported directives.
//
//= require rails-ujs
//= require turbolinks
//= require_tree .
//= require jquery3
//= require popper
//= require bootstrap-sprockets

You can check sample bootstrap forms here:

https://bootsnipp.com/snippets/featured/login-amp-signup-forms-in-panel

Remove cable.js from javascripts # we don’t need this for now