Optimized Model.count to run about 3x faster

history.txt

@@ -6,6 +6,7 @@
   
 * Minor enhancements
   
+  * Optimized Model.count to run about 3x faster (Matt Aimonetti)
   * Added Float casting (Ryan Felton & Matt Aimonetti)
 
 == 0.30

lib/couchrest/mixins/design_doc.rb

@@ -37,9 +37,6 @@ module CouchRest
                   if (doc['couchrest-type'] == '#{self.to_s}') {
                     emit(null,1);
                   }
-                }",
-                'reduce' => "function(keys, values) {
-                  return sum(values);
                 }"
               }
             }

lib/couchrest/mixins/document_queries.rb

@@ -19,9 +19,7 @@ module CouchRest
         # equal to the name of the current class. Takes the standard set of 
         # CouchRest::Database#view options
         def count(opts = {}, &block)
-          result = all({:reduce => true}.merge(opts), &block)['rows']
+          all({:raw => true, :limit => 0}.merge(opts), &block)['total_rows']
-          return 0 if result.empty?
-          result.first['value']
         end
         
         # Load the first document that have the "couchrest-type" field equal to