This has been removed and should no longer exist.
https://github.com/radar/paranoia/pull/192#discussion_r24884921

This will allow to detect counter cached columns changes in callbacks
like `after_destroy` or `after_commit on: :destroy`.

This is a workaround actually. Since
`ActiveRecord::CounterCache.each_counter_cached_associations` is
private. We shouldn’t use it. Proposals for the proper fix are welcome.

The reason the previous version stopped working is `affected_rows`
returns `0` at
[active_record/counter_cache.rb#L142](https://github.com/rails/rails/blo
b/ef99d4cd3ecc58a8c1484740b2fb5447dbda23ab/activerecord/lib/active_recor
d/counter_cache.rb#L142). If you follow the method call you’ll find
that it’s called at
[active_record/persistence.rb#L486](https://github.com/rails/rails/blob/
ef99d4cd3ecc58a8c1484740b2fb5447dbda23ab/activerecord/lib/active_record/
persistence.rb#L486). Probably we’d better override the return value in
`ActiveRecord::Relation.delete_all` at
[active_record/relation.rb#L481](https://github.com/rails/rails/blob/ef9
9d4cd3ecc58a8c1484740b2fb5447dbda23ab/activerecord/lib/active_record/rel
ation.rb#L481).

https://github.com/radar/paranoia/blame/1b051ae78793f3b62297b5adbaa9c1d0
0e6726e0/README.md#L154

http://edgeguides.rubyonrails.org/4_2_release_notes.html#active-record-d
eprecations
> Deprecated passing Active Record objects to .find or .exists?. Call
id on the objects first.
Commits in Rails:
https://github.com/rails/rails/commit/d92ae6ccca3bcfd73546d612efaea01127
0bd270
https://github.com/rails/rails/commit/d35f0033c7dec2b8d8b52058fb8db495d4
9596f7
https://github.com/rails/rails/commit/c0609dd0f0f0de604ac1ffeffdf5e3e0e7
356b35

We shouldn't be overriding this. soft-deleted objects are still
persisted.

The default implementation is already destroy || raise

Thanks @kidlab

There was a change in ActiveRecord#update_columns on latest rails
so now it checks for `destroyed?` instead of `persisted?`. Paranoia
can't override `destoyed?` like this anymore otherwise
`update_columns` will always raise:

        ActiveRecord::ActiveRecordError: cannot update a destroyed record

see https://github.com/rails/rails/commit/0f99aa615e11c50cc64b567f54cf64f59108c5e5

If the association object is a has_one relationship with an :as option,
it will have a type attribute (see
https://github.com/rails/docrails/blob/master/activerecord/lib/active_record/reflection.rb#L280).

If this type attributes is present, that will be the type column on the
polymorphic model. The foreign key can be found as an attribute on
the association object.

The changes in 40b7af58 were insufficient, this should do the trick.

FIX: where("association_id", id) leads to invalid statement in postgres. where should just be given a hash.

This reverts commit 4004bd5e.

This reverts commit 6881e750.

see https://github.com/radar/paranoia/issues/169

refs https://github.com/radar/paranoia/issues/102