refactors stats page

app/controllers/stats_controller.rb

@@ -3,7 +3,7 @@ class StatsController < ApplicationController
   skip_authorization_check
 
   def show
-    @event_types = Ahoy::Event.select(:name).uniq.pluck(:name)
+    @event_types = Ahoy::Event.group(:name).count
   end
 
   private

app/views/stats/show.html.erb

@@ -10,13 +10,13 @@
 
       <div class="small-12 medium-6 column">
         <h3>Combined</h3>
-        <%= events_chart_tag @event_types, id: 'combined' %>
+        <%= events_chart_tag @event_types.keys, id: 'combined' %>
       </div>
 
       <div class="small-12">
-        <% @event_types.each do |event_type| %>
-          <h3><%= event_type.titleize %></h3>
-          <%= events_chart_tag event_type %>
+        <% @event_types.each do |event, count| %>
+          <h3><%= event.titleize %> (<%= count %>)</h3>
+          <%= events_chart_tag event %>
         <% end %>
       </div>
     </div>