continued work on site profile, tag adding

models/site.rb

@@ -279,12 +279,18 @@ class Site < Sequel::Model
   def after_save
     if @new_tag_strings
       @new_tag_strings.each do |new_tag_string|
-        add_tag Tag[name: new_tag_string] || Tag.create(name: new_tag_string)
+        add_tag_name new_tag_string
       end
     end
     super
   end
 
+  def add_tag_name(name)
+    if tags_dataset.filter(name: name).first.nil?
+      add_tag Tag[name: name] || Tag.create(name: name)
+    end
+  end
+
   def after_create
     DB['update servers set slots_available=slots_available-1 where id=?', self.server.id].first
     super