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-rw-r--r--activerecord/lib/active_record/associations.rb5
-rw-r--r--activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb6
2 files changed, 11 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb
index ac1479ad8f..d66a79a137 100644
--- a/activerecord/lib/active_record/associations.rb
+++ b/activerecord/lib/active_record/associations.rb
@@ -1576,6 +1576,11 @@ module ActiveRecord
join_model = builder.through_model
+ # FIXME: we should move this to the internal constants. Also people
+ # should never directly access this constant so I'm not happy about
+ # setting it.
+ const_set join_model.name, join_model
+
middle_reflection = builder.middle_reflection join_model
Builder::HasMany.define_callbacks self, middle_reflection
diff --git a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
index c166fe87e8..cfdfff6af9 100644
--- a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
+++ b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
@@ -83,6 +83,12 @@ class HasAndBelongsToManyAssociationsTest < ActiveRecord::TestCase
country.treaties << treaty
end
+ def test_marshal_dump
+ post = posts :welcome
+ preloaded = Post.includes(:categories).find post.id
+ assert_equal preloaded, Marshal.load(Marshal.dump(preloaded))
+ end
+
def test_should_property_quote_string_primary_keys
setup_data_for_habtm_case