Rails Acts as Taggable On

I am using acts-as-taggable-on to tag a Car model. I have three different tag contexts: Make, Color & Features. The first two Make & Color are predefined in an ENV variable and the last context is user generated(automatic windows, heated seats etc.)

What I'd like to do is make it so that from my index page Cars can be filtered by multiple tags at a time. So for instance, I'd like a series of checkboxes at the top of the index page a separate set for each context where a user can check Hyundai & Red and the index of cars would populate with only red Hyundais. At the moment I have a route and some code in my Cars Controller that allows me to filter by one tag but I'd like to modify it to filter by whatever a user selects.

routes.rb

  get 'tags/:tags', to: 'cars#index', as: :tag

controller

def index
 if params[:keyword].present?
  @cars = Car.tagged_with(params[:keyword])
 else
  @cars = Car.all.order(:cached_weighted_score => :desc)
 end
end

---

The @selected_tag is tags that have been selected as parameter in index page.

Controller

def index
 if params[:keyword].present?
  @selected_tag = params[:keyword]
  @cars = Car.tagged_with(params[:keyword])
 else
  @cars = Car.all.order(:cached_weighted_score => :desc)
 end
end

View

It's only prototype view so you have to combine with your own code.

<% @tags.each do |tag| %>
    <div>
      <%= check_box_tag "keywords[]", tag.name, @selected_tag.present? ? @selected_tag.include?(tag.name) : '' %>
      <%= tag.name %>
    </div>
<% end %>

I hope I can give a general overview with my description. For more information to prepopulate data in checkbox

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