* Continued work on improving post view templates

* Added statistics-based estimator for related tag calculator
* Fleshed out IpBan class based on changes to Danbooru 1.xx

app/models/comment.rb

@@ -1,4 +1,5 @@
-class Comment < ActiveRecord::Base  
+class Comment < ActiveRecord::Base
+  validate :validate_creator_is_not_limited
   validates_format_of :body, :with => /\S/, :message => 'has no content'
   belongs_to :post
   belongs_to :creator, :class_name => "User"
@@ -6,35 +7,24 @@ class Comment < ActiveRecord::Base
   after_save :update_last_commented_at
   after_destroy :update_last_commented_at
   attr_accessible :body
-  attr_accessor :do_not_bump_post
   
   scope :recent, :order => "comments.id desc", :limit => 6
   scope :search_body, lambda {|query| where("body_index @@ plainto_tsquery(?)", query).order("comments.id DESC")}
   scope :hidden, lambda {|user| where("score < ?", user.comment_threshold)}
 
+  def creator_name
+    User.find_name(creator_id)
+  end
+
+  def validate_creator_is_not_limited
+    creator.is_privileged? || Comment.where("creator_id = ? AND created_at >= ?", creator_id, 1.hour.ago).count < 5
+  end
+
   def update_last_commented_at
-    return if do_not_bump_post    
-    comment_count = Comment.where(["post_id = ?", post_id]).count    
-    if comment_count <= Danbooru.config.comment_threshold
+    if Comment.where(["post_id = ?", post_id]).count <= Danbooru.config.comment_threshold
       execute_sql("UPDATE posts SET last_commented_at = ? WHERE id = ?", created_at, post_id)
     end
   end
-
-  def can_be_voted_by?(user)
-    !votes.exists?(["user_id = ?", user.id])
-  end
-  
-  def vote!(user, is_positive)
-    if can_be_voted_by?(user)
-      if is_positive
-        increment!(:score)
-      else
-        decrement!(:score)
-      end
-      
-      votes.create(:user_id => user.id)
-    else
-      raise CommentVote::Error.new("You have already voted for this comment")
-    end
-  end
 end
+
+Comment.connection.extend(PostgresExtensions)