If you’re using capistrano-ext to deploy to a different server, using a custom environment, you’ve probably noticed that it always tries to run the migrations for the production environment, like this:
cd path_to_app/deploy/releases/20100309152738; rake RAILS_ENV=production db:migrateDigging through capistrano’s source I found the solution is really simple, just set the rails_env variable to the environment you want, in this example staging. So inside config/deploy/staging.rb
set :rails_env, "staging"Then when migrations get executed they’ll have RAILS_ENV=staging.