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.

Methods

new   run  

Constants

DEFAULT_SCHEMA_COLUMN = :filename
DEFAULT_SCHEMA_TABLE = :schema_migrations
Error = Migrator::Error

Attributes

applied_migrations  [R]  Array of strings of applied migration filenames
migration_tuples  [R]  Get tuples of migrations, filenames, and actions for each migration

Public Class methods

new(db, directory, opts={})

Set up all state for the migrator instance

[Source]

     # 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

Public Instance methods

run()

Apply all migration tuples on the database

[Source]

     # 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

[Validate]