Class | Sequel::IntegerMigrator |
In: |
lib/sequel/extensions/migration.rb
|
Parent: | Migrator |
The default migrator, recommended in most cases. Uses a simple incrementing version number starting with 1, where missing or duplicate migration file versions are not allowed. Part of the migration extension.
DEFAULT_SCHEMA_COLUMN | = | :version |
DEFAULT_SCHEMA_TABLE | = | :schema_info |
Error | = | Migrator::Error |
current | [R] | The current version for this migrator |
direction | [R] | The direction of the migrator, either :up or :down |
migrations | [R] | The migrations used by this migrator |
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] || latest_migration_version 425: @current = opts[:current] || current_migration_version 426: 427: raise(Error, "No current version available") unless current 428: raise(Error, "No target version available, probably because no migration files found or filenames don't follow the migration filename convention") unless target 429: 430: @direction = current < target ? :up : :down 431: @migrations = get_migrations 432: end
Apply all migrations on the database
# File lib/sequel/extensions/migration.rb, line 435 435: def run 436: migrations.zip(version_numbers).each do |m, v| 437: t = Time.now 438: lv = up? ? v : v + 1 439: db.log_info("Begin applying migration version #{lv}, direction: #{direction}") 440: db.transaction do 441: m.apply(db, direction) 442: set_migration_version(v) 443: end 444: db.log_info("Finished applying migration version #{lv}, direction: #{direction}, took #{sprintf('%0.6f', Time.now - t)} seconds") 445: end 446: 447: target 448: end