fix pool metatags, fix artist search

app/controllers/bans_controller.rb

@@ -33,7 +33,6 @@ class BansController < ApplicationController
     if @ban.update_attributes(params[:ban])
       redirect_to ban_path(@ban), :notice => "Ban updated"
     else
-      puts @ban.errors.full_messages
       render :action => "edit"
     end
   end  

app/models/comment.rb

@@ -84,8 +84,6 @@ class Comment < ActiveRecord::Base
   end
 
   def update_last_commented_at
-    puts Comment.where("post_id = ?", post_id).count
-    puts !do_not_bump_post?
     if Comment.where("post_id = ?", post_id).count == 0
       Post.update_all("last_commented_at = NULL", ["id = ?", post_id])
     elsif Comment.where("post_id = ?", post_id).count <= Danbooru.config.comment_threshold && !do_not_bump_post?

app/models/post.rb

@@ -8,6 +8,7 @@ class Post < ActiveRecord::Base
   after_destroy :delete_remote_files
   after_save :create_version
   after_save :update_parent_on_save
+  after_save :apply_metatags, :on => :create
   before_save :merge_old_tags
   before_save :normalize_tags
   before_save :create_tags
@@ -380,13 +381,15 @@ class Post < ActiveRecord::Base
     end
     
     def filter_metatags(tags)
-      metatags, tags = tags.partition {|x| x =~ /\A(?:-pool|pool|rating|fav|parent):/}
-      apply_metatags(metatags)
+      @metatags, tags = tags.partition {|x| x =~ /\A(?:-pool|pool|rating|fav|parent):/}
+      apply_metatags
       return tags
     end
     
-    def apply_metatags(tags)
-      tags.each do |tag|
+    def apply_metatags
+      return unless @metatags.is_a?(Array)
+      
+      @metatags.each do |tag|
         case tag
         when /^parent:none$/, /^parent:0$/
           self.parent_id = nil

config/initializers/core_extensions.rb

@@ -2,7 +2,7 @@ module Danbooru
   module Extensions
     module String
       def to_escaped_for_sql_like
-        return self.gsub(/\\/, '\0\0').gsub(/(%|_)/, '\\\\\\1').gsub(/_/, '\\_').gsub(/\*/, '%')
+        return self.gsub(/\\/, '\0\0').gsub(/(%|_)/, "\\\\\\1").gsub(/\*/, '%')
       end
 
       def to_escaped_js