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author | Rick Olson <technoweenie@gmail.com> | 2008-01-02 21:39:49 +0000 |
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committer | Rick Olson <technoweenie@gmail.com> | 2008-01-02 21:39:49 +0000 |
commit | 0ad24df6ed389c1d57970c6e7650c5b1b7ae7676 (patch) | |
tree | 852a8f8fb56d0aacd3f67bf7fb2f0f247c014e6f /activerecord/lib | |
parent | 744b1d7f4d2df583c77f99a33ae560ad64414c66 (diff) | |
download | rails-0ad24df6ed389c1d57970c6e7650c5b1b7ae7676.tar.gz rails-0ad24df6ed389c1d57970c6e7650c5b1b7ae7676.tar.bz2 rails-0ad24df6ed389c1d57970c6e7650c5b1b7ae7676.zip |
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
Diffstat (limited to 'activerecord/lib')
-rwxr-xr-x | activerecord/lib/active_record/base.rb | 10 |
1 files changed, 8 insertions, 2 deletions
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. |