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Capistrano Rollback database migrations
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| before "deploy:rollback:revision", "deploy:rollback_database" | |
| desc "Rolls back database to migration level of the previously deployed release" | |
| task :rollback_database, :roles => :db, :only => { :primary => true } do | |
| if releases.length < 2 | |
| abort "could not rollback the code because there is no prior release" | |
| else | |
| rake = fetch(:rake, "rake") | |
| rails_env = fetch(:rails_env, "production") | |
| migrate_env = fetch(:migrate_env, "") | |
| migrate_target = fetch(:migrate_target, :latest) | |
| run "cd #{current_path}; #{rake} RAILS_ENV=#{rails_env} #{migrate_env} db:migrate VERSION=`cd #{File.join(previous_release, 'db', 'migrate')} && ls -1 [0-9]*_*.rb | tail -1 | sed -e s/_.*$//`" | |
| end | |
| end |
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