regenerate tagging_extentions from has_many_polymorphs plugin

lib/tagging_extensions.rb

@@ -1,4 +1,3 @@
-
 class ActiveRecord::Base #:nodoc:
 
   # These extensions make models taggable. This file is automatically generated and required by your app if you run the tagging generator included with has_many_polymorphs.
@@ -13,7 +12,7 @@ class ActiveRecord::Base #:nodoc:
         begin
           tag = Tag.find_or_create_by_name(tag_name)
           raise Tag::Error, "tag could not be saved: #{tag_name}" if tag.new_record?
-          tag.taggables << self
+          tags << tag
         rescue ActiveRecord::StatementInvalid => e
           raise unless e.to_s =~ /duplicate/i
         end
@@ -24,7 +23,6 @@ class ActiveRecord::Base #:nodoc:
     def _remove_tags outgoing
       taggable?(true)
       outgoing = tag_cast_to_string(outgoing)
-     
       tags.delete(*(tags.select do |tag|
         outgoing.include? tag.name    
       end))
@@ -36,7 +34,7 @@ class ActiveRecord::Base #:nodoc:
     end
   
     # Replace the existing tags on <tt>self</tt>. Accepts a string of tagnames, an array of tagnames, an array of ids, or an array of Tags.
-    def tag_with list
+    def tag_with list    
       #:stopdoc:
       taggable?(true)
       list = tag_cast_to_string(list)
@@ -60,7 +58,11 @@ class ActiveRecord::Base #:nodoc:
       tags.to_s
       #:startdoc:
     end
-    
+
+    def tag_list=(value)
+        tag_with(value)
+    end    
+
     private 
     
     def tag_cast_to_string obj #:nodoc:
@@ -68,8 +70,7 @@ class ActiveRecord::Base #:nodoc:
         when Array
           obj.map! do |item|
             case item
-              # removed next line: its prevents adding numbers as tags
-              # when /^\d+$/, Fixnum then Tag.find(item).name # This will be slow if you use ids a lot.
+              when /^\d+$/, Fixnum then Tag.find(item).name # This will be slow if you use ids a lot.
               when Tag then item.name
               when String then item
               else
@@ -78,7 +79,7 @@ class ActiveRecord::Base #:nodoc:
           end              
         when String
           obj = obj.split(Tag::DELIMITER).map do |tag_name| 
-            tag_name.strip.squeeze(" ")            
+            tag_name.strip.squeeze(" ")
           end
         else
           raise "Invalid object of class #{obj.class} as tagging method parameter"
@@ -96,13 +97,14 @@ class ActiveRecord::Base #:nodoc:
   end
   
   module TaggingFinders
-    # 
     # Find all the objects tagged with the supplied list of tags
     # 
     # Usage : Model.tagged_with("ruby")
     #         Model.tagged_with("hello", "world")
     #         Model.tagged_with("hello", "world", :limit => 10)
     #
+    # XXX This query strategy is not performant, and needs to be rewritten as an inverted join or a series of unions
+    # 
     def tagged_with(*tag_list)
       options = tag_list.last.is_a?(Hash) ? tag_list.pop : {}
       tag_list = parse_tags(tag_list)
@@ -114,17 +116,22 @@ class ActiveRecord::Base #:nodoc:
       sql  = "SELECT #{(scope && scope[:select]) || options[:select]} "
       sql << "FROM #{(scope && scope[:from]) || options[:from]} "
 
-      add_joins!(sql, options, scope)
+      add_joins!(sql, options[:joins], scope)
       
       sql << "WHERE #{table_name}.#{primary_key} = taggings.taggable_id "
       sql << "AND taggings.taggable_type = '#{ActiveRecord::Base.send(:class_name_of_active_record_descendant, self).to_s}' "
       sql << "AND taggings.tag_id = tags.id "
       
-      tag_list_condition = tag_list.map {|t| "'#{t}'"}.join(", ")
+      tag_list_condition = tag_list.map {|name| "'#{name}'"}.join(", ")
       
       sql << "AND (tags.name IN (#{sanitize_sql(tag_list_condition)})) "
       sql << "AND #{sanitize_sql(options[:conditions])} " if options[:conditions]
-      sql << "GROUP BY #{table_name}.id "
+      
+      columns = column_names.map do |column| 
+        "#{table_name}.#{column}"
+      end.join(", ")
+      
+      sql << "GROUP BY #{columns} "
       sql << "HAVING COUNT(taggings.tag_id) = #{tag_list.size}"
       
       add_order!(sql, options[:order], scope)
@@ -133,6 +140,47 @@ class ActiveRecord::Base #:nodoc:
       
       find_by_sql(sql)
     end
+   
+   def self.tagged_with_any(*tag_list)
+     options = tag_list.last.is_a?(Hash) ? tag_list.pop : {}
+     tag_list = parse_tags(tag_list)
+   
+     scope = scope(:find)
+     options[:select] ||= "#{table_name}.*"
+     options[:from] ||= "#{table_name}, meta_tags, taggings"
+   
+     sql  = "SELECT #{(scope && scope[:select]) || options[:select]} "
+     sql << "FROM #{(scope && scope[:from]) || options[:from]} "
+
+     add_joins!(sql, options, scope)
+   
+     sql << "WHERE #{table_name}.#{primary_key} = taggings.taggable_id "
+     sql << "AND taggings.taggable_type = '#{ActiveRecord::Base.send(:class_name_of_active_record_descendant, self).to_s}' "
+     sql << "AND taggings.meta_tag_id = meta_tags.id "
+     
+     sql << "AND ("
+     or_options = []
+     tag_list.each do |name|
+       or_options << "meta_tags.name = '#{name}'"
+     end
+     or_options_joined = or_options.join(" OR ")
+     sql << "#{or_options_joined}) "
+     
+     
+     sql << "AND #{sanitize_sql(options[:conditions])} " if options[:conditions]
+      
+     columns = column_names.map do |column| 
+       "#{table_name}.#{column}"
+     end.join(", ")
+      
+     sql << "GROUP BY #{columns} "
+   
+     add_order!(sql, options[:order], scope)
+     add_limit!(sql, options, scope)
+     add_lock!(sql, options, scope)
+   
+     find_by_sql(sql)
+   end
     
     def parse_tags(tags)
       return [] if tags.blank?