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]