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| author | Eugene Gilburg <eugene.gilburg@gmail.com> | 2013-10-27 23:58:23 -0700 |
|---|---|---|
| committer | Rafael Mendonça França <rafaelmfranca@gmail.com> | 2015-02-12 17:40:59 -0200 |
| commit | d7a7a050e103def759d1e5694e5aaa35b1d03cd1 (patch) | |
| tree | da6965c7c8404d1b884b95b13dc06dd3f741bfde /activerecord/lib/active_record/null_relation.rb | |
| parent | 8d0fe8047a3c630d29224688ecfa4f4b26cb238a (diff) | |
| download | rails-d7a7a050e103def759d1e5694e5aaa35b1d03cd1.tar.gz rails-d7a7a050e103def759d1e5694e5aaa35b1d03cd1.tar.bz2 rails-d7a7a050e103def759d1e5694e5aaa35b1d03cd1.zip | |
Optimize none? and one? relation query methods to use LIMIT and COUNT.
Use SQL COUNT and LIMIT 1 queries for none? and one? methods if no block or limit is given,
instead of loading the entire collection to memory. The any? and many? methods already
follow this behavior.
[Eugene Gilburg & Rafael Mendonça França]
Diffstat (limited to 'activerecord/lib/active_record/null_relation.rb')
| -rw-r--r-- | activerecord/lib/active_record/null_relation.rb | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/null_relation.rb b/activerecord/lib/active_record/null_relation.rb index 63ca29305d..fa6eaa7e64 100644 --- a/activerecord/lib/active_record/null_relation.rb +++ b/activerecord/lib/active_record/null_relation.rb @@ -30,10 +30,18 @@ module ActiveRecord true end + def none? + true + end + def any? false end + def one? + false + end + def many? false end |