Class: Sequel::SimpleMigration

Inherits:
Object
  • Object
show all
Defined in:
lib/sequel/extensions/migration.rb

Overview

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.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#down ⇒ Object

Proc used for the down action



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# File 'lib/sequel/extensions/migration.rb', line 67

def down
  @down
end

#up ⇒ Object

Proc used for the up action



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# File 'lib/sequel/extensions/migration.rb', line 70

def up
  @up
end

Instance Method Details

#apply(db, direction) ⇒ Object

Apply the appropriate block on the Database instance using instance_eval.

Raises:

  • (ArgumentError) 


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# File 'lib/sequel/extensions/migration.rb', line 74

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