rollback_missing_migrations.rake in umbrellio-sequel-plugins-0.12.0

- old
+ new

@@ -1,26 +1,25 @@
 # frozen_string_literal: true
 
 require "sequel/timestamp_migrator_undo_extension"
 
 namespace :sequel do
-  # Rollback migrations that are absent in revision when deploying on staging
+  desc "Rollback migrations that are absent in revision when deploying on staging"
   task rollback_missing_migrations: :environment do
-    # Extract migrations
-    def extract_migrations(path)
+    extract_migrations = lambda do |path|
       Dir.glob("#{path}/db/migrate/*.rb").map { |filename| File.basename(filename).to_i }
     end
 
-    old_migrations = extract_migrations(ENV.fetch("OLD_RELEASE"))
-    new_migrations = extract_migrations(ENV.fetch("NEW_RELEASE"))
+    old_migrations = extract_migrations.call(ENV.fetch("OLD_RELEASE"))
+    new_migrations = extract_migrations.call(ENV.fetch("NEW_RELEASE"))
     migrations_to_rollback = old_migrations - new_migrations
 
     next if migrations_to_rollback.empty?
 
     puts "Rolling back migrations:"
     puts migrations_to_rollback
 
-    path = ::Rails.root.join("db/migrate")
+    path = Rails.root.join("db/migrate")
     migrator = Sequel::TimestampMigrator.new(DB, path, allow_missing_migration_files: true)
     applied_migrations = migrator.applied_migrations.map(&:to_i)
     migrations = applied_migrations.select { |m| m.in?(migrations_to_rollback) }.sort.reverse
 
     migrations.each { |migration| migrator.undo(migration) }