Question

I developped a simple rails application that runs perfectly on my development machine.

When I put it on the production server (Phusion Passenger/Nginx), it returns me that error in the my_app/log/production.log file:

ActiveRecord::StatementInvalid (Could not find table 'categories')

What is wrong?

PS: After a naming error, the table name was edited manually but it works great in the development mode. I don’t suspect that misnaming error.

Answer 1

1. Make sure you’ve run your database migrations on the production server

2. Manually editing tables is a huge no no in Rails. It’ll give you more headaches than it is worth. If you need to change something, you’re way better of generating a new migration to change it – even if it’s just a name change. (You can however rollback the db changes, delete that last migration and create a new one – but like I said – it’s more trouble than it’s worth)

3. Make sure your schema xml file is correct or at least matching to the actual schema. You can delete this and run rake:db:migrate to generate a new one.