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-rw-r--r--activerecord/lib/active_record/associations/association_collection.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/associations/association_collection.rb b/activerecord/lib/active_record/associations/association_collection.rb
index 4ce3b34819..b5159eead3 100644
--- a/activerecord/lib/active_record/associations/association_collection.rb
+++ b/activerecord/lib/active_record/associations/association_collection.rb
@@ -422,7 +422,7 @@ module ActiveRecord
match = DynamicFinderMatch.match(method)
if match && match.creator?
attributes = match.attribute_names
- return send(:"find_by_#{attributes.join('and')}", *args) || create(Hash[attributes.zip(args)])
+ return send(:"find_by_#{attributes.join('_and_')}", *args) || create(Hash[attributes.zip(args)])
end
if @target.respond_to?(method) || (!@reflection.klass.respond_to?(method) && Class.respond_to?(method))