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 422 422: def initialize(db, directory, opts={}) 423: super 424: @target = opts[:target] 425: @applied_migrations = get_applied_migrations 426: @migration_tuples = get_migration_tuples 427: end
Apply all migration tuples on the database
# File lib/sequel/extensions/migration.rb, line 430 430: def run 431: migration_tuples.each do |m, f, direction| 432: t = Time.now 433: db.log_info("Begin applying migration #{f}, direction: #{direction}") 434: db.transaction do 435: m.apply(db, direction) 436: fi = f.downcase 437: direction == :up ? ds.insert(column=>fi) : ds.filter(column=>fi).delete 438: end 439: db.log_info("Finished applying migration #{f}, direction: #{direction}, took #{sprintf('%0.6f', Time.now - t)} seconds") 440: end 441: nil 442: end