Add by hour of day chart.

app/controllers/chart_handler.rb

@@ -33,7 +33,12 @@ def per_capita_state_chart
     per_capita_label, per_capita_data = AlienSighting.get_per_capita_sightings_by_state
     setup_chart(per_capita_label, per_capita_data, "Sightings by state per capita")
   end
-
+
+  def time_of_day_chart
+    by_hour_label, by_hour_data = AlienSighting.by_hour_of_day
+    setup_chart(by_hour_label, by_hour_data, "Sightings by hour")
+  end
+
   def setup_chart(data_label, chart_data, chart_label)
     {
     labels: data_label,

app/controllers/main_controller.rb

@@ -31,6 +31,10 @@ def per_capita_by_state
     @per_capita_by_state_chart = per_capita_state_chart
   end
 
+  def time_of_day
+    @time_of_day_chart = time_of_day_chart
+  end
+
   def dashboard
     @shapes = AlienSighting.all_shapes
   end

app/models/alien_sighting.rb

@@ -42,9 +42,10 @@ def self.shape_by_country(shape)
   end
 
   def self.by_hour_of_day
+    format_for_chart(
     group("date_part('hour', date_posted)")
     .order("count(date_posted) DESC")
-    .count
+    .count)
   end
 
   def self.shape_by_state(shape)

app/views/main/dashboard.html.erb

@@ -5,6 +5,7 @@
 <%= link_to 'Sightings by year', years_path, class: "dropbtn" %> <br />
 <%= link_to 'Sightings by US city', cities_path, class: "dropbtn" %> <br />
 <%= link_to 'Total sightings by reported shape', shapes_path, class: "dropbtn" %> <br />
+<%= link_to 'Sightings by hour of day', by_time_of_day_path, class: "dropbtn" %> <br />
 <div class="dropdown">
   <button onclick="myFunction()" class="dropbtn">Shape count by state</button>
   <div id="myDropdown" class="dropdown-content">

app/views/main/time_of_day.html.erb

@@ -0,0 +1 @@
+<%= pie_chart @time_of_day_chart %>

config/routes.rb

@@ -1,6 +1,7 @@
 Rails.application.routes.draw do
   # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
   root 'main#index'
+  get 'dashboard/bytimeofday', :to => 'main#time_of_day', :as => 'by_time_of_day'
   get 'dashboard/shapes', :to => 'main#shapes', :as => 'shapes'
   get 'dashboard/cities', :to => 'main#cities', :as => 'cities'
   get 'dashboard/years', :to => 'main#years', :as => 'years'