Add "Download" link which will include post's tags in filename

app/models/post.rb

@@ -95,6 +95,10 @@ class Post < ActiveRecord::Base
       "#{Rails.root}/public/data/preview/#{file_path_prefix}#{md5}.jpg"
     end
 
+    def file_name
+      "#{file_path_prefix}#{md5}.#{file_ext}"
+    end
+
     def file_url
       "/data/#{file_path_prefix}#{md5}.#{file_ext}"
     end

app/views/posts/partials/show/_options.html.erb

@@ -3,6 +3,7 @@
   <li><%= link_to "Favorite", favorites_path(:post_id => post.id), :remote => true, :method => :post, :id => "add-to-favorites", :title => "Shortcut is F" %></li>
   <li><%= link_to "Unfavorite", favorite_path(post), :remote => true, :method => :delete, :id => "remove-from-favorites" %></li>
   <li><%= link_to "Edit", "#", :id => "side-edit-link" %></li>
+  <li><%= link_to_if post.visible?, "Download", post.file_url, :download => post.presenter.humanized_essential_tag_string + " - " + post.file_name %></li>
   <li id="random-post-list"><%= link_to "Random post", random_posts_path(:tags => params[:tags]), :id => "random-post" %></li>
   <li id="add-to-pool-list"><%= link_to "Add to pool", "#", :id => "pool" %></li>
   <% if post.is_note_locked? %>