belongs_to polymorphic association assignments update the foreign_id and foreign_type fields regardless of whether the record being assigned is new or not.

fixes the following scenarios:
* I have validates_inclusion_of on the type field for a polymorphic belongs_to association.  I assign a new record to the model's polymorphic relationship of the proper type.  validation fails because the type field has not been updated.

* I replace the value for a ppolymorphic association to a new record of another class.  The type field still says its the previous class, and the id field points to the previous record as well.

[#191 state:closed]

1 files changed, 2 insertions, 4 deletions

diff --git a/activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb b/activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb
index df4ae38f38..d8146daa54 100755
--- a/activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb
+++ b/activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb
@@ -7,10 +7,8 @@ module ActiveRecord
         else
           @target = (AssociationProxy === record ? record.target : record)
 
-          unless record.new_record?
-            @owner[@reflection.primary_key_name] = record.id
-            @owner[@reflection.options[:foreign_type]] = record.class.base_class.name.to_s
-          end
+          @owner[@reflection.primary_key_name] = record.id
+          @owner[@reflection.options[:foreign_type]] = record.class.base_class.name.to_s
 
           @updated = true
         end