fix #867. deferring in tag view is now working

app/controllers/todos_controller.rb

@@ -264,6 +264,8 @@ class TodosController < ApplicationController
       @remaining_undone_in_project = current_user.projects.find(@original_item_project_id).not_done_todo_count
     end
     determine_down_count
+    determine_deferred_tag_count(params['_tag_name']) if @source_view == 'tag'
+
     respond_to do |format|
       format.js
       format.xml { render :xml => @todo.to_xml( :except => :user_id ) }
@@ -435,7 +437,7 @@ class TodosController < ApplicationController
     @todo = Todo.find(params[:id])
     @todo.show_from = (@todo.show_from || @todo.user.date) + numdays.days
     @saved = @todo.save
-    
+
     determine_down_count
     determine_remaining_in_context_count(@todo.context_id)
     respond_to do |format|
@@ -693,6 +695,13 @@ class TodosController < ApplicationController
     end
   end
 
+  def determine_deferred_tag_count(tag)
+    tag_collection = Tag.find_by_name(tag).todos
+    @deferred_tag_count = tag_collection.count(:all,
+      :conditions => ['todos.user_id = ? and state = ?', current_user.id, 'deferred'],
+      :order => 'show_from ASC, todos.created_at DESC')
+  end
+
   def render_todos_html
     lambda do
       @page_title = "TRACKS::List tasks"