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-rw-r--r--activerecord/lib/active_record/associations/association_collection.rb7
1 files changed, 4 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/associations/association_collection.rb b/activerecord/lib/active_record/associations/association_collection.rb
index 7100be0245..692badcc5c 100644
--- a/activerecord/lib/active_record/associations/association_collection.rb
+++ b/activerecord/lib/active_record/associations/association_collection.rb
@@ -396,11 +396,12 @@ module ActiveRecord
if @target.is_a?(Array) && @target.any?
@target = find_target.map do |f|
i = @target.index(f)
- t = @target.delete_at(i) if i
- if t && t.changed?
+ if i
+ t = @target.delete_at(i)
+ keys = ["id"] + t.changes.keys + (f.attribute_names - t.attribute_names)
+ t.attributes = f.attributes.except(*keys)
t
else
- f.mark_for_destruction if t && t.marked_for_destruction?
f
end
end + @target