$db public property The DB connection object or the application
$migrationCollection public property The name of the collection
createMigration() protected method Creates a new migration
removeMigrationHistory() protected method Removes existing
$templateFile public property The template file for generating
options() public method Returns the names of valid options
addMigrationHistory() protected method Adds new migration
getMigrationHistory() protected method Returns the migration
ensureBaseMigrationHistory() protected method Ensures
beforeAction() public method This method is invoked right