Partial updates include only unsaved attributes. Off by default; set YourClass.partial_updates = true to enable.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@9157 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 4 insertions, 4 deletions

diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb
index af480a0797..fe38454226 100755
--- a/activerecord/lib/active_record/base.rb
+++ b/activerecord/lib/active_record/base.rb
@@ -2407,8 +2407,8 @@ module ActiveRecord #:nodoc:
 
       # Updates the associated record with values matching those of the instance attributes.
       # Returns the number of affected rows.
-      def update
-        quoted_attributes = attributes_with_quotes(false, false)
+      def update(attribute_names = @attributes.keys)
+        quoted_attributes = attributes_with_quotes(false, false, attribute_names)
         return 0 if quoted_attributes.empty?
         connection.update(
           "UPDATE #{self.class.quoted_table_name} " +
@@ -2500,10 +2500,10 @@ module ActiveRecord #:nodoc:
 
       # Returns a copy of the attributes hash where all the values have been safely quoted for use in
       # an SQL statement.
-      def attributes_with_quotes(include_primary_key = true, include_readonly_attributes = true)
+      def attributes_with_quotes(include_primary_key = true, include_readonly_attributes = true, attribute_names = @attributes.keys)
         quoted = {}
         connection = self.class.connection
-        @attributes.each_pair do |name, value|
+        attribute_names.each do |name|
           if column = column_for_attribute(name)
             quoted[name] = connection.quote(read_attribute(name), column) unless !include_primary_key && column.primary
           end