Autosave callbacks shouldn't be `after_save`

068f092ced8483e557725542dd919ab7c516e567 registered autosave callbacks
as `after_save` callbacks. This caused the regression described in #17209.

Autosave callbacks should be registered as `after_update` and
`after_create` callbacks, just like before.

This is a partial revert of 068f092ced8483e557725542dd919ab7c516e567.

Fixes #17209.

2 files changed, 18 insertions, 0 deletions

diff --git a/activerecord/test/cases/autosave_association_test.rb b/activerecord/test/cases/autosave_association_test.rb
index b2a7d3956d..734fd5fe18 100644
--- a/activerecord/test/cases/autosave_association_test.rb
+++ b/activerecord/test/cases/autosave_association_test.rb
@@ -1,5 +1,6 @@
 require 'cases/helper'
 require 'models/bird'
+require 'models/comment'
 require 'models/company'
 require 'models/customer'
 require 'models/developer'
@@ -616,6 +617,14 @@ class TestDefaultAutosaveAssociationOnNewRecord < ActiveRecord::TestCase
     firm.save!
     assert !account.persisted?
   end
+
+  def test_autosave_new_record_with_after_create_callback
+    post = PostWithAfterCreateCallback.new(title: 'Captain Murphy', body: 'is back')
+    post.comments.build(body: 'foo')
+    post.save!
+
+    assert_not_nil post.author_id
+  end
 end
 
 class TestDestroyAsPartOfAutosaveAssociation < ActiveRecord::TestCase
diff --git a/activerecord/test/models/post.rb b/activerecord/test/models/post.rb
index 256b720c9a..67027cbc22 100644
--- a/activerecord/test/models/post.rb
+++ b/activerecord/test/models/post.rb
@@ -219,6 +219,15 @@ class PostThatLoadsCommentsInAnAfterSaveHook < ActiveRecord::Base
   end
 end
 
+class PostWithAfterCreateCallback < ActiveRecord::Base
+  self.table_name = 'posts'
+  has_many :comments, foreign_key: :post_id
+
+  after_create do |post|
+    update_attribute(:author_id, comments.first.id)
+  end
+end
+
 class PostWithCommentWithDefaultScopeReferencesAssociation < ActiveRecord::Base
   self.table_name = 'posts'
   has_many :comment_with_default_scope_references_associations, foreign_key: :post_id