rails delete controller with ActiveRecord not working

I am using Rails and have a controller for Bills in which there is a destroy method. In the browser, when I use the delete url e.g. localhost/delete/2 (2 in this case is the ID of the relevant bill), the bill never gets deleted. Any ideas on what I could be doing wrong (or if I should additional configs here). The routes is copied below ass well.

bills_controller

  def destroy
    @bill = Bill.find(params[:id])
    @bill.destroy
    respond_to do |format|
      format.html { redirect_to posts_url, notice: 'Bill was successfully destroyed.' }
      format.json { head :no_content }
    end
  end

Routes:

Rails.application.routes.draw do
  resources :posts
  get 'posts/index'
end

Should I be adding a specific route for the delete action in the routes.rb file? I have the following on my HTML page:

  <td><a data-confirm="Are you sure?" rel="nofollow" data-method="delete" href="/bills/1">Destroy</a></td>