lib/multiverse/railtie.rb in multiverse-0.2.1 vs lib/multiverse/railtie.rb in multiverse-0.2.2

@@ -34,10 +34,11 @@
               Rails.application.config.database_configuration.each do |env, config|
                 if env.start_with?("#{Multiverse.db}_")
                   new_config[env.sub("#{Multiverse.db}_", "")] = config
                 end
               end
-              ActiveRecord::Tasks::DatabaseTasks.database_configuration.merge!(new_config)
+              abort "Unknown DB: #{Multiverse.db}" if new_config.empty?
+              ActiveRecord::Tasks::DatabaseTasks.database_configuration = new_config
             end
 
             # load config
             ActiveRecord::Base.configurations = ActiveRecord::Tasks::DatabaseTasks.database_configuration || {}
             ActiveRecord::Migrator.migrations_paths = ActiveRecord::Tasks::DatabaseTasks.migrations_paths