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Hi, I'm Chris. I'm the creator of GoRails, Hatchbox.io and Jumpstart. I spend my time creating tutorials and tools to help Ruby on Rails developers build apps better and faster.
About This Episode
Rails apps and Rubygems might need to support multiple databases. We can use the DATABASE_URL environment variable to quickly swap out the database that Rails uses in CI, local testing, and more.
Postgres Rails Database URL example:
DATABASE_URL=postgres://username:password@localhost/mydb rails test
MySQL Rails Database URL example:
DATABASE_URL=mysql2://username:password@localhost/mydb rails test
SQLite Rails Database URL example:
DATABASE_URL=sqlite3:mydb rails test