Module: Sequel::Plugins::SingleStatementDatasetDestroy::DatasetMethods

Defined in:
lib/sequel/plugins/single_statement_dataset_destroy.rb

Instance Method Summary collapse

Instance Method Details

#destroy ⇒ Object

Destroy all rows in a single DELETE statement. Run the before_destroy hooks for all rows before the DELETE, and all after_destroy hooks for all rows after the DELETE. If the model uses an around_destroy hook, fallback to using a separate DELETE statement per row.



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# File 'lib/sequel/plugins/single_statement_dataset_destroy.rb', line 31

def destroy
  return super unless model.instance_method(:around_destroy).owner == Sequel::Model::InstanceMethods

  db.transaction do
    rows = all
    rows.each(&:before_destroy)
    expected_rows = rows.length
    n = delete
    unless n == expected_rows
      raise Error, "dataset changed during destroy, expected rows: #{expected_rows}, actual rows: #{n}"
    end
    rows.each(&:after_destroy)
    n
  end
end