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-rw-r--r--activerecord/lib/active_record/associations/preloader.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/associations/preloader.rb b/activerecord/lib/active_record/associations/preloader.rb
index 42571d6af0..7519fec10a 100644
--- a/activerecord/lib/active_record/associations/preloader.rb
+++ b/activerecord/lib/active_record/associations/preloader.rb
@@ -143,6 +143,7 @@ module ActiveRecord
def grouped_records(association, records)
h = {}
records.each do |record|
+ next unless record
assoc = record.association(association)
klasses = h[assoc.reflection] ||= {}
(klasses[assoc.klass] ||= []) << record