Eduardo Poleo b500ef77d7 Poll migration is not idempotent (#7964) ...

The migration script is not idempotent due to database constrains on the
poll related objects, namely:

polls: index_polls_on_post_id_and_name (post_id,name) UNIQUE
poll_options: index_poll_options_on_poll_id_and_digest  (poll_id,digest) UNIQUE
poll_votes:  index_poll_votes_on_poll_id_and_poll_option_id_and_user_id  (poll_id,poll_option_id,user_id) UNIQUE

This change skips a particular poll migration if it's already found on
the db.

2019-08-08 18:48:53 +02:00

..

20180820080623_migrate_polls_data.rb

Poll migration is not idempotent (#7964)

2019-08-08 18:48:53 +02:00