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 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

### Public Instance methods

run()

Apply all migration tuples on the database

[Source]

         # 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

[Validate]