First of all make sure you've created a rails app
rails new APP_NAMEEnsure you have bootstrap and it's dependencies
yarn add bootstrap
yarn add jquery popper.jsEnsure you have the following gems in your Rails Gemfile
# Gemfile
gem 'autoprefixer-rails'
gem 'font-awesome-sass', '~> 5.6.1'
gem 'simple_form'In your terminal, generate SimpleForm Bootstrap config.
bundle install
rails generate simple_form:install --bootstrapThen replace Rails' stylesheets by Le Wagon's stylesheets:
rm -rf app/assets/stylesheets
curl -L https://github.com/lewagon/stylesheets/archive/master.zip > stylesheets.zip
unzip stylesheets.zip -d app/assets && rm stylesheets.zip && mv app/assets/rails-stylesheets-master app/assets/stylesheets
And the viewport in the layout
<!-- app/views/layouts/application.html.erb -->
<head>
<!-- Add these line for detecting device width -->
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<!-- [...] -->
</head>Make sure you change the webpack config with the following code to include jQuery & Popper in webpack:
// config/webpack/environment.js
const { environment } = require('@rails/webpacker')
// Bootstrap 4 has a dependency over jQuery & Popper.js:
const webpack = require('webpack')
environment.plugins.prepend('Provide',
new webpack.ProvidePlugin({
$: 'jquery',
jQuery: 'jquery',
Popper: ['popper.js', 'default']
})
)
module.exports = environmentFinally import bootstrap:
// app/javascript/packs/application.js
import 'bootstrap';Look at your main application.scss file to see how SCSS files are imported. There should not be a *= require_tree . line in the file.
// app/assets/stylesheets/application.scss
// Graphical variables
@import "config/fonts";
@import "config/colors";
@import "config/bootstrap_variables";
// External libraries
@import "bootstrap/scss/bootstrap"; // from the node_modules
@import "font-awesome-sprockets";
@import "font-awesome";
// Your CSS partials
@import "components/index";
@import "pages/index";For every folder (components, pages), there is one _index.scss partial which is responsible for importing all the other partials of its folder.
Example 1: Let's say you add a new _contact.scss file in pages then modify pages/_index.scss as:
// pages/_index.scss
@import "home";
@import "contact";Example 2: Let's say you add a new _card.scss file in components then modify components/_index.scss as:
// components/_index.scss
@import "card";Our layouts/_navbar.scss code works well with our home-made ERB template which you can find here:
Don't forget that *.html.erb files go in the app/views folder, and *.scss files go in the app/assets/stylesheets folder. Also, our navbar have a link to the root_path, so make sure that you have a root to: "controller#action" route in your config/routes.rb file.
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