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 540 540: def initialize(db, directory, opts={}) 541: super 542: @target = opts[:target] 543: @applied_migrations = get_applied_migrations 544: @migration_tuples = get_migration_tuples 545: end
Apply all migration tuples on the database
# File lib/sequel/extensions/migration.rb, line 548 548: def run 549: migration_tuples.each do |m, f, direction| 550: t = Time.now 551: db.log_info("Begin applying migration #{f}, direction: #{direction}") 552: db.transaction do 553: m.apply(db, direction) 554: fi = f.downcase 555: direction == :up ? ds.insert(column=>fi) : ds.filter(column=>fi).delete 556: end 557: db.log_info("Finished applying migration #{f}, direction: #{direction}, took #{sprintf('%0.6f', Time.now - t)} seconds") 558: end 559: nil 560: end