class Sequel::SimpleMigration

Migration class used by the Sequel.migration DSL, using instances for each migration, unlike the Migration class, which uses subclasses for each migration. Part of the migration extension.

Attributes

down [RW]

Proc used for the down action

up [RW]

Proc used for the up action

use_transactions [RW]

Whether to use transactions for this migration, default depends on the database.

Public Class Methods

new ()

Source

    # File lib/sequel/extensions/migration.rb
101 def initialize
102   @use_transactions = nil
103 end

Don’t set transaction use by default.

Public Instance Methods

apply (db, direction)

Source

    # File lib/sequel/extensions/migration.rb
107 def apply(db, direction)
108   raise(ArgumentError, "Invalid migration direction specified (#{direction.inspect})") unless [:up, :down].include?(direction)
109   if prok = public_send(direction)
110     db.instance_exec(&prok)
111   end
112 end

Apply the appropriate block on the Database instance using instance_exec.