now questions with blank title wont be shown

app/models/qa.rb

@@ -24,7 +24,7 @@ class Qa
   accepts_nested_attributes_for :qa_files, :allow_destroy => true
   accepts_nested_attributes_for :qa_links, :allow_destroy => true
 
-  scope :can_display, ->{where(:is_hidden=>false).order_by([:is_top, :desc])}
+  scope :can_display, ->{where(:is_hidden=>false,:title.ne => "").order_by([:is_top, :desc])}
 
   
   # belongs_to :qa_category