wpid field on papers is not populated when a paper is created

[kevinreiss]

Expected behavior

When you create a new paper, it creates a database row with a non-NULL integer in the wpid column, which then displays as the Number field in the RDF format.

Actual behavior

The wpid value on the new database row is NULL.

Steps to replicate

1. Start the application locally
2. In bundle exec rails c, create an admin account for yourself with: User.create(uid: 'my_netid', provider: 'cas', role:'admin')
3. In your browser, press the "Add New Series" link
4. Fill out the form
5. Next to your new series, press the "View Papers" link
6. Press the "Add New Paper" link
7. Fill out the form
8. Go back to the main page that lists your series.
9. Press the "View RDF" next to your series.
10. Notice that the RDF data for your series has an empty Number.

Impact of this bug

Not sure