call(env) Instance Public methods

new(delegate = nil) Class Public methods

change_table(table_name, options = {}) Instance Public methods

inverse_of(command, args, &block) Instance Public methods Returns the inverse of the given command. For example: recorder.inverse_of(:rename_table, [:old, :new]) # => [:rename_table, [:new, :old]] This method will raise an IrreversibleMigration exception if it cannot invert the command.

record(*command, &block) Instance Public methods record command. command should be a method name and arguments. For example: recorder.record(:method_name, [:arg1, :arg2])

revert() Instance Public methods While executing the given block, the recorded will be in reverting mode. All commands recorded will end up being recorded reverted and in reverse order. For example: recorder.revert{ recorder.record(:rename_table, [:old, :new]) } # same effect as recorder.record(:rename_table, [:new, :old])

check_pending!(connection = Base.connection) Class Public methods

disable_ddl_transaction!() Class Public methods Disable DDL transactions for this migration.

load_schema_if_pending!() Class Public methods

migrate(direction) Class Public methods