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 420 420: def initialize(db, directory, opts={}) 421: super 422: @target = opts[:target] || latest_migration_version 423: @current = opts[:current] || current_migration_version 424: 425: raise(Error, "No current version available") unless current 426: raise(Error, "No target version available") unless target 427: 428: @direction = current < target ? :up : :down 429: @migrations = get_migrations 430: end
Apply all migrations on the database
# File lib/sequel/extensions/migration.rb, line 433 433: def run 434: migrations.zip(version_numbers).each do |m, v| 435: t = Time.now 436: lv = up? ? v : v + 1 437: db.log_info("Begin applying migration version #{lv}, direction: #{direction}") 438: db.transaction do 439: m.apply(db, direction) 440: set_migration_version(v) 441: end 442: db.log_info("Finished applying migration version #{lv}, direction: #{direction}, took #{sprintf('%0.6f', Time.now - t)} seconds") 443: end 444: 445: target 446: end