From 0ad24df6ed389c1d57970c6e7650c5b1b7ae7676 Mon Sep 17 00:00:00 2001 From: Rick Olson Date: Wed, 2 Jan 2008 21:39:49 +0000 Subject: Optimize ActiveRecord::Base#exists? to use #select_all instead of #find. Closes #10605 [jamesh, fcheung, protocool] git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8531 5ecf4fe2-1ee6-0310-87b1-e25e094e27de --- activerecord/lib/active_record/base.rb | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'activerecord/lib') diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb index 5aba0f060a..2cdb43566c 100755 --- a/activerecord/lib/active_record/base.rb +++ b/activerecord/lib/active_record/base.rb @@ -548,8 +548,14 @@ module ActiveRecord #:nodoc: # Person.exists?(:name => "David") # Person.exists?(['name LIKE ?', "%#{query}%"]) def exists?(id_or_conditions) - !find(:first, :select => "#{quoted_table_name}.#{primary_key}", - :conditions => expand_id_conditions(id_or_conditions)).nil? + connection.select_all( + construct_finder_sql( + :select => "#{quoted_table_name}.#{primary_key}", + :conditions => expand_id_conditions(id_or_conditions), + :limit => 1 + ), + "#{name} Exists" + ).size > 0 end # Creates an object (or multiple objects) and saves it to the database, if validations pass. -- cgit v1.2.3