Class | Sequel::TimestampMigrator |
In: |
lib/sequel/extensions/migration.rb
|
Parent: | Migrator |
The migrator used if any migration file version appears to be a timestamp. Stores filenames of migration files, and can figure out which migrations have not been applied and apply them, even if earlier migrations are added after later migrations. If you plan to do that, the responsibility is on you to make sure the migrations don‘t conflict. Part of the migration extension.
DEFAULT_SCHEMA_COLUMN | = | :filename |
DEFAULT_SCHEMA_TABLE | = | :schema_migrations |
Error | = | Migrator::Error |
applied_migrations | [R] | Array of strings of applied migration filenames |
migration_tuples | [R] | Get tuples of migrations, filenames, and actions for each migration |
Set up all state for the migrator instance
# File lib/sequel/extensions/migration.rb, line 423 423: def initialize(db, directory, opts={}) 424: super 425: @target = opts[:target] 426: @applied_migrations = get_applied_migrations 427: @migration_tuples = get_migration_tuples 428: end
Apply all migration tuples on the database
# File lib/sequel/extensions/migration.rb, line 431 431: def run 432: migration_tuples.each do |m, f, direction| 433: t = Time.now 434: db.log_info("Begin applying migration #{f}, direction: #{direction}") 435: db.transaction do 436: m.apply(db, direction) 437: fi = f.downcase 438: direction == :up ? ds.insert(column=>fi) : ds.filter(column=>fi).delete 439: end 440: db.log_info("Finished applying migration #{f}, direction: #{direction}, took #{sprintf('%0.6f', Time.now - t)} seconds") 441: end 442: nil 443: end