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 423
423:     def initialize(db, directory, opts={})
424:       super
425:       @target = opts[:target]
426:       @applied_migrations = get_applied_migrations
427:       @migration_tuples = get_migration_tuples
428:     end

Public Instance methods

run()

Apply all migration tuples on the database

[Source]

     # File lib/sequel/extensions/migration.rb, line 431
431:     def run
432:       migration_tuples.each do |m, f, direction|
433:         t = Time.now
434:         db.log_info("Begin applying migration #{f}, direction: #{direction}")
435:         db.transaction do
436:           m.apply(db, direction)
437:           fi = f.downcase
438:           direction == :up ? ds.insert(column=>fi) : ds.filter(column=>fi).delete
439:         end
440:         db.log_info("Finished applying migration #{f}, direction: #{direction}, took #{sprintf('%0.6f', Time.now - t)} seconds")
441:       end
442:       nil
443:     end

[Validate]