I was working on another branch and as part of my commit, Rubocop
removed a validation (but not the spec that asserted the validation).
Below is the "non-updating" rubocop offense on the other branch.
```shell
❯ rubocop ./app/models/notification_subscription.rb
Inspecting 1 file
C
Offenses:
app/models/notification_subscription.rb:13:29: C: [Correctable]
Rails/RedundantPresenceValidationOnBelongsTo: Remove explicit presence
validation for notifiable_id.
validates :notifiable_id, presence: true
^^^^^^^^^^^^^^
1 file inspected, 1 offense detected, 1 offense auto-correctable
```
To remediate, I ran:
```shell
> rubocop --only "Rails/RedundantPresenceValidationOnBelongsTo" \
--auto-correct
```
This resolved the `app/models`. Then did some regex magic and removed
the assertions from `spec/models`.
For Forem folks, I wrote a [forem.team post][1] discuss if this is how
we want to proceed.
[1]:https://forem.team/jeremy/rubocop-auto-updating-mayhem-33a6
* Add index and show pages for series
* Address code review
* Use `id` instead of `slug` to get collections
* Extract `collection_link` into the application helper
* Only count published articles
* Get rid of the `collection_link_class` method
* Add tests
* Fix test
* Use `**kwargs` instead of `options = {}`
* Use pick instead of pluck first
* Use touch_all instead of update_all
* Use destroy_by instead of where.destroy_all
* Use scopes
* Fix db:seed:replant
* Remove ActiveSupport::Cache::RedisCacheStore expires_in cache
