undefined method `relation’ for nil:NilClass on Heroku

I host almost 100% of my open source projects on Heroku, it’s amazing how easy it is to setup and how “out-of-your-way” they are.

Today, while working on one of my open source project I encountered this error:

It was right after I deployed and migrated the database.

After about 5 minutes of head scratching I came across an answer on stackoverflow saying you have to restart your app after a migration for it to pick up on schema changes.

Had a DAH! moment there :-)

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