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()
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Don't set transaction use by default.
# File lib/sequel/extensions/migration.rb, line 97 def initialize @use_transactions = nil end
Public Instance Methods
apply(db, direction)
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Apply the appropriate block on the Database
instance using
instance_eval.
# File lib/sequel/extensions/migration.rb, line 103 def apply(db, direction) raise(ArgumentError, "Invalid migration direction specified (#{direction.inspect})") unless [:up, :down].include?(direction) if prok = send(direction) db.instance_eval(&prok) end end