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 541 541: def initialize(db, directory, opts={}) 542: super 543: @target = opts[:target] 544: @applied_migrations = get_applied_migrations 545: @migration_tuples = get_migration_tuples 546: end
Apply all migration tuples on the database
# File lib/sequel/extensions/migration.rb, line 549 549: def run 550: migration_tuples.each do |m, f, direction| 551: t = Time.now 552: db.log_info("Begin applying migration #{f}, direction: #{direction}") 553: db.transaction do 554: m.apply(db, direction) 555: fi = f.downcase 556: direction == :up ? ds.insert(column=>fi) : ds.filter(column=>fi).delete 557: end 558: db.log_info("Finished applying migration #{f}, direction: #{direction}, took #{sprintf('%0.6f', Time.now - t)} seconds") 559: end 560: nil 561: end