How do you write a case insensitive query for both MySQL and Postgres?

Question

I\'m running a MySQL database locally for development, but deploying to Heroku which uses Postgres. Heroku handles almost everything, but my case-insensitive Like statements

Answer 1

Use Arel:

Author.where(Author.arel_table[:name].matches("%foo%"))

matches will use the ILIKE operator for Postgres, and LIKE for everything else.