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@@ -1,5 +1,5 @@
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 class Page < ActiveRecord::Base
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-  has_many :taggings, :dependent => :nullify
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+  has_many :taggings, :dependent => :destroy
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   has_many :tags, :through => :taggings, :uniq => true
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   def tag_list
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@@ -19,9 +19,11 @@
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   end
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   def create_taggings(tag_string)
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+    self.tags.delete(self.tags)
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+    self.tags.reset
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     tag_string.split(',').each do |t|
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       tag = Tag.find_or_create_by_name(t.strip)
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-      self.tags << tag unless self.tags.any? { |existing_tag| existing_tag == tag }
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+      self.tags << tag 
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     end
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   end
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