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authorSzymon Nowak <szimek@gmail.com>2013-10-14 19:51:29 +0200
committerSzymon Nowak <szimek@gmail.com>2013-10-19 21:53:45 +0200
commit4ba9c508ec1d59dd43154022479a37558f8c19f3 (patch)
tree5998a224b53e59df9d42900a7fe9fdbd17bfe376
parentdb82e1d0bb21c2a13354b97733c09737719e946b (diff)
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In Relation#empty? use #exists? instead of #count.
-rw-r--r--activerecord/CHANGELOG.md4
-rw-r--r--activerecord/lib/active_record/relation.rb3
2 files changed, 5 insertions, 2 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index 815e7c71fe..22a37810bc 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,3 +1,7 @@
+* Make `Relation#empty?` use `exists?` instead of `count`.
+
+ *Szymon Nowak*
+
* `rake db:structure:dump` no longer crashes when the port was specified as `Fixnum`.
*Kenta Okamoto*
diff --git a/activerecord/lib/active_record/relation.rb b/activerecord/lib/active_record/relation.rb
index cfaf566ec4..81548117b0 100644
--- a/activerecord/lib/active_record/relation.rb
+++ b/activerecord/lib/active_record/relation.rb
@@ -244,8 +244,7 @@ module ActiveRecord
def empty?
return @records.empty? if loaded?
- c = count(:all)
- c.respond_to?(:zero?) ? c.zero? : c.empty?
+ limit_value == 0 ? true : !exists?
end
# Returns true if there are any records.