tweak styles for intro page

app/assets/stylesheets/specific/explore.css.scss

@@ -5,11 +5,15 @@ div#c-explore-posts {
     h1 {
       font-size: 3em;
     }
+
+    p.byline {
+      font-size: 1.2em;
+      font-style: italic;
+    }
   }
 
   div.posts {
     padding: 1em;
     margin-bottom: 2em;
-    background: #EEF;
   }
 }

app/models/tag.rb

@@ -117,6 +117,27 @@ class Tag < ActiveRecord::Base
   end
 
   module StatisticsMethods
+    def trending
+      Cache.get("popular-tags", 1.hour) do
+        CurrentUser.scoped(User.admins.first, "127.0.0.1") do
+          n = 1
+          results = []
+
+          while results.empty? && n < 256
+            query = n.days.ago.strftime("date:>%Y-%m-%d")
+            results = RelatedTagCalculator.calculate_from_sample_to_array(query)
+            n *= 2
+          end
+
+          results.map! do |tag_name, recent_count|
+            tag = Tag.find_or_create_by_name(tag_name)
+            [tag_name, recent_count.to_f / tag.post_count.to_f]
+          end
+
+          results.sort_by! {|x| -x[1]}.map(&:first)
+        end
+      end
+    end
   end
 
   module NameMethods

app/presenters/intro_presenter.rb

@@ -1,6 +1,6 @@
 class IntroPresenter
   def popular_tags
-    Tag.order("post_count desc").limit(8).map(&:name)
+    Tag.where("category in (3, 4)").order("post_count desc").limit(8).map(&:name)
   end
 
   def each

app/presenters/post_set_presenters/post.rb

@@ -23,25 +23,7 @@ module PostSetPresenters
     end
 
     def popular_tags
-      Cache.get("popular-tags", 1.hour) do
+      Tag.trending
-        CurrentUser.scoped(User.admins.first, "127.0.0.1") do
-          n = 1
-          results = []
-
-          while results.empty? && n < 256
-            query = n.days.ago.strftime("date:>%Y-%m-%d")
-            results = RelatedTagCalculator.calculate_from_sample_to_array(query)
-            n *= 2
-          end
-
-          results.map! do |tag_name, recent_count|
-            tag = Tag.find_or_create_by_name(tag_name)
-            [tag_name, recent_count.to_f / tag.post_count.to_f]
-          end
-
-          results.sort_by! {|x| -x[1]}.map(&:first)
-        end
-      end
     end
 
     def pattern_tags

app/views/explore/posts/intro.html.erb

@@ -10,6 +10,8 @@
       <% end %>
     </header>
 
+    <p style="text-align: center;">Type in your favorite anime, manga, or character (last name first). Here are some examples:</p>
+
     <% @presenter.each do |tag, post_set| %>
       <div class="posts">
         <h2><%= link_to tag, posts_path(:tags => tag) %></h2>
@@ -19,3 +21,7 @@
     <% end %>
   </div>
 </div> 
+
+<% content_for(:page_title) do %>
+  <%= Danbooru.config.app_name %>
+<% end %>