cache user promotion report

app/logical/reports/user_promotions.rb

@@ -23,7 +23,9 @@ module Reports
     end
 
     def users
-      User.joins(:posts).where("users.level < ?", User::Levels::CONTRIBUTOR).where("posts.created_at >= ? and posts.fav_count >= 1", self.class.min_time).order("users.name")
+      User.with_timeout(30_000) do
+        User.joins(:posts).where("users.level < ?", User::Levels::CONTRIBUTOR).where("posts.created_at >= ? and posts.fav_count >= 1", self.class.min_time).order("users.name")
+      end
     end
   end
 end

app/views/reports/user_promotions.html.erb

@@ -15,14 +15,16 @@
         </tr>
       </thead>
       <tbody>
-        <% @report.users.each do |user| %>
-          <tr>
-            <td><%= link_to user.name, user_path(user) %></td>
-            <td><%= user.level_string %></td>
-            <td><%= number_to_percentage Reports::UserPromotions.confidence_interval_for(user, 1), :precision => 0 %></td>
-            <td><%= number_to_percentage Reports::UserPromotions.confidence_interval_for(user, 5), :precision => 0 %></td>
-            <td><%= number_to_percentage Reports::UserPromotions.confidence_interval_for(user, 10), :precision => 0 %></td>
-          </tr>
+        <% cache("user-promotions-report/#{Date.today}") do %>
+          <% @report.users.each do |user| %>
+            <tr>
+              <td><%= link_to user.name, user_path(user) %></td>
+              <td><%= user.level_string %></td>
+              <td><%= number_to_percentage Reports::UserPromotions.confidence_interval_for(user, 1), :precision => 0 %></td>
+              <td><%= number_to_percentage Reports::UserPromotions.confidence_interval_for(user, 5), :precision => 0 %></td>
+              <td><%= number_to_percentage Reports::UserPromotions.confidence_interval_for(user, 10), :precision => 0 %></td>
+            </tr>
+          <% end %>
         <% end %>
       </tbody>
     </table>