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-rw-r--r--activerecord/lib/active_record/associations.rb9
1 files changed, 6 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb
index f3f77e21c0..b5e21cbede 100644
--- a/activerecord/lib/active_record/associations.rb
+++ b/activerecord/lib/active_record/associations.rb
@@ -669,11 +669,14 @@ module ActiveRecord
# and member posts that use the posts table for STI. In this case, there must be a +type+
# column in the posts table.
#
+ # Note: The <tt>attachable_type=</tt> method is being called when assigning an +attachable+.
+ # The +class_name+ of the +attachable+ is passed as a String.
+ #
# class Asset < ActiveRecord::Base
# belongs_to :attachable, polymorphic: true
#
- # def attachable_type=(sType)
- # super(sType.to_s.classify.constantize.base_class.to_s)
+ # def attachable_type=(class_name)
+ # super(class_name.constantize.base_class.to_s)
# end
# end
#
@@ -1582,7 +1585,7 @@ module ActiveRecord
hm_options[:through] = middle_reflection.name
hm_options[:source] = join_model.right_reflection.name
- [:before_add, :after_add, :before_remove, :after_remove].each do |k|
+ [:before_add, :after_add, :before_remove, :after_remove, :autosave].each do |k|
hm_options[k] = options[k] if options.key? k
end