Tools for applying Barnardo's Design System to Ruby projects.

The tools include helper methods and modifications to simple_form to make it Design System compliant.


Add this line to your application's Gemfile:

gem 'barnardos-ruby_design_system'

And then execute:

$ bundle

With the gem installed, a Rails generator is added that will set up the host app. To run the generator execute the following at app root:

$ rails g barnardos:install

Then restart the server and the changes should take effect.

Have a look at lib/generators/barnardos/install_generator.rb for the details of the generator's actions.

As an outline it does the following:

Installs the barnardos components in the webpaker environment

These provide the CSS and JS needed for the components to work properly

Installs PostCSS

The CSS used in the Design System requires processing in JavaScript space by PostCSS.

The file package.json is updated to include declarations for PostCSS and related plugins.

The PostCSS configuration file /postcss.config.js is copied to root

Sets up simple form to work with the design system

A set of classes are inserted into app/inputs. These modify the rails input classes so that when used with simple_form, they create components that match the design system.

Adds app/helpers/barnardos_design_system_helper.rb

This helper contains the statement include Barnardos::RubyDesignSystem::ComponentHelper which makes the helper method defined in this gem, available to the views in the host app.

Using the components


For each Design System component you wish to use in the app, add a line to application.js in the form:

import "@barnardos/components/src/components/<component name>/index.css";

For example:

import "@barnardos/components/src/components/Footer/index.css";
import "@barnardos/components/src/components/Header/index.css";
import "@barnardos/components/src/components/Layout/index.css";
import "@barnardos/components/src/components/Link/index.css";
import "@barnardos/components/src/components/Main/index.css";
import "@barnardos/components/src/components/Paragraph/index.css";
import "@barnardos/components/src/components/Title/index.css";

This will load the associated CSS where it can be processed by PostCSS. The list of imports can get quite long, so placing them in alphabetical order is a good idea as it makes them a little easier to manage.


After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to


Bug reports and pull requests are welcome on GitHub at[USERNAME]/barnardos-ruby_design_system.


The gem is available as open source under the terms of the MIT License.