Fix can_display for status ordering and hidden

app/models/bulletin.rb

@@ -34,6 +34,8 @@ class Bulletin
 
   before_destroy :destroy_email
 
+  scope :can_display, ->{where(:is_hidden=>false).any_of({:postdate.lt=>Time.now, :deadline.gt=>Time.now},{:postdate.lt=>Time.now, :deadline=>nil}).order_by([:is_top, :desc])}
+
   def update_user
     User.find(update_user_id) rescue nil
   end
@@ -42,10 +44,6 @@ class Bulletin
     self.update_user_id = user.id
   end
 
-  def self.can_display()
-    self.any_of({:postdate.lt=>Time.now, :deadline.gt=>Time.now},{:postdate.lt=>Time.now, :deadline=>nil})
-  end
-
   def email_members
     MemberProfile.find(self.email_member_ids) rescue []
   end