easy-going-rails/app/helpers/icon_helper.rb

# Font Awesome Helper
module IconHelper
  def fa_icon(name, extra_class = nil, style: :solid, size: nil)
    content_class = "fa-#{style.to_s.dasherize} fa-#{name.to_s.dasherize}"
    content_class << " fa-#{size.to_s.dasherize}" if size
    content_class << " #{extra_class}" if extra_class
    tag.i(class: content_class, 'aria-hidden': true)
  end
end