Method: Sequel::MigrationDSL#change

Defined in:
lib/sequel/extensions/migration.rb

#change(&block) ⇒ Object

Creates a reversible migration. This is the same as creating the same block with up, but it also calls the block and attempts to create a down block that will reverse the changes made by the block.

There are no guarantees that this will work perfectly in all cases, but it works for some simple cases.



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# File 'lib/sequel/extensions/migration.rb', line 158

def change(&block)
  migration.up = block
  migration.down = MigrationReverser.new.reverse(&block)
end