# File lib/active_record/persistence.rb, line 192 def update_column(name, value) name = name.to_s raise ActiveRecordError, "#{name} is marked as readonly" if self.class.readonly_attributes.include?(name) raise ActiveRecordError, "can not update on a new record object" unless persisted? updated_count = self.class.update_all({ name => value }, self.class.primary_key => id) raw_write_attribute(name, value) updated_count == 1 end