/**
* Rollback the last migration operation.
*
* @param bool $pretend
*
* @return int
*/
public function rollback($pretend = false)
{
if (!$this->repository->repositoryExists()) {
$this->note('<info>Nothing to rollback.</info>');
return 0;
}
$this->notes = [];
$this->batch->validate();
$defined = array_reverse($this->batch->getExpanded());
// We want to pull in the last batch of migrations that ran on the
// previous migration operation. We'll then reverse those migrations and
// run each of them "down" to reverse the last migration "operation"
// which ran.
$migrations = $this->repository->getLast();
if (count($migrations) === 0) {
$this->note('<info>Nothing to rollback.</info>');
return count($migrations);
}
// We need to reverse these migrations so that they are "downed" in
// reverse to what they run on "up". It lets us backtrack through the
// migrations and properly reverse the entire database schema operation
// that ran.
//
// For structured migrations, we have to do some additional magic to
// figure out the right order in which migrations should be rolled-back
// since a simple sort by name won't do.
$processedMigrations = [];
foreach ($migrations as $migration) {
$processedMigrations[$migration->migration] = $migration;
}
foreach ($defined as $name) {
if (array_key_exists($name, $processedMigrations)) {
$this->runDown((object) $processedMigrations[$name], $pretend);
}
}
return count($migrations);
}
