Add more speaker related charts in analytics

app/controllers/analytics/dashboards_controller.rb

@@ -30,4 +30,47 @@ def yearly_talks
       Talk.group_by_year(:date).count.map { |date, count| [date.year, count] }
     end
   end
+
+  def speaking_experience
+    @speaking_experience = Rails.cache.fetch(["speaking_experience", Talk.all]) do
+      Talk
+        .joins(:speakers)
+        .group("speakers.id")
+        .select("speakers.id, MIN(talks.date) AS first_talk_date")
+        .group_by { |talk| (Date.today - talk.first_talk_date.to_date).to_i / 365 }
+        .transform_keys { |years| "#{years} #{"year".pluralize(years)} of experience" }
+        .transform_values(&:count)
+        .sort_by { |years, _count| years.to_i }
+    end
+  end
+
+  def yearly_first_time_speakers
+    @yearly_first_time_speakers = Rails.cache.fetch(["yearly_first_time_speakers", Talk.all]) do
+      Talk
+        .joins(:speakers)
+        .group("speakers.id")
+        .select("MIN(talks.date) AS first_talk_date")
+        .group_by { |talk| Date.parse(talk.first_talk_date).year }
+        .transform_values(&:count)
+    end
+  end
+
+  def yearly_speakers
+    @yearly_speakers = Rails.cache.fetch(["yearly_speakers", Talk.all]) do
+      Talk
+        .joins(:speakers)
+        .group("strftime('%Y', talks.date)")
+        .count
+    end
+  end
+
+  def yearly_unique_speakers
+    @yearly_unique_speakers = Rails.cache.fetch(["yearly_unique_speakers", Talk.all]) do
+      Talk
+        .joins(:speakers)
+        .group("strftime('%Y', talks.date)")
+        .distinct
+        .count("speakers.id")
+    end
+  end
 end

app/views/analytics/dashboards/show.html.erb

@@ -9,8 +9,16 @@
   <div class="grid grid-cols-1 lg:grid-cols-2 gap-8">
     <%= turbo_frame_tag "daily_visits", src: daily_visits_analytics_dashboards_path, lazy: true %>
     <%= turbo_frame_tag "daily_page_views", src: daily_page_views_analytics_dashboards_path, lazy: true %>
+
     <%= turbo_frame_tag "monthly_visits", src: monthly_visits_analytics_dashboards_path, lazy: true %>
     <%= turbo_frame_tag "monthly_page_views", src: monthly_page_views_analytics_dashboards_path, lazy: true %>
+
     <%= turbo_frame_tag "yearly_talks", src: yearly_talks_analytics_dashboards_path, lazy: true %>
+    <%= turbo_frame_tag "yearly_speakers", src: yearly_speakers_analytics_dashboards_path, lazy: true %>
+
+    <%= turbo_frame_tag "yearly_first_time_speakers", src: yearly_first_time_speakers_analytics_dashboards_path, lazy: true %>
+    <%= turbo_frame_tag "yearly_unique_speakers", src: yearly_unique_speakers_analytics_dashboards_path, lazy: true %>
+
+    <%= turbo_frame_tag "speaking_experience", src: speaking_experience_analytics_dashboards_path, lazy: true %>
   </div>
 </div>

app/views/analytics/dashboards/speaking_experience.erb

@@ -0,0 +1,4 @@
+<%= turbo_frame_tag "speaking_experience" do %>
+  <h2 class="text-center mb-4">Years of speaking experience when giving the talk</h2>
+  <%= column_chart @speaking_experience, id: :speaking_experience_chart %>
+<% end %>

app/views/analytics/dashboards/yearly_first_time_speakers.html.erb

@@ -0,0 +1,4 @@
+<%= turbo_frame_tag "yearly_first_time_speakers" do %>
+  <h2 class="text-center mb-4">Yearly first time speakers at Ruby Conferences</h2>
+  <%= column_chart @yearly_first_time_speakers, id: :yearly_first_time_speakers_chart %>
+<% end %>

app/views/analytics/dashboards/yearly_speakers.html.erb

@@ -0,0 +1,4 @@
+<%= turbo_frame_tag "yearly_speakers" do %>
+  <h2 class="text-center mb-4">Yearly speakers at Ruby Conferences</h2>
+  <%= column_chart @yearly_speakers, id: :yearly_speakers_chart %>
+<% end %>

app/views/analytics/dashboards/yearly_unique_speakers.html.erb

@@ -0,0 +1,4 @@
+<%= turbo_frame_tag "yearly_unique_speakers" do %>
+  <h2 class="text-center mb-4">Yearly unique speakers at Ruby Conferences</h2>
+  <%= column_chart @yearly_unique_speakers, id: :yearly_unique_speakers_chart %>
+<% end %>

config/routes.rb

@@ -38,6 +38,10 @@
       get :monthly_page_views
       get :monthly_visits
       get :yearly_talks
+      get :yearly_speakers
+      get :yearly_unique_speakers
+      get :yearly_first_time_speakers
+      get :speaking_experience
     end
   end
   resources :talks, param: :slug, only: [:index, :show, :update, :edit] do