/**
* @param $columns
* @param $referencedTable
* @param array $referencedColumns
* @param array $options
* @return $this
*/
public function addForeignKey($columns, $referencedTable, $referencedColumns = ['id'], $options = [])
{
$foreignKey = new ForeignKey();
if (!is_array($referencedColumns)) {
$referencedColumns = array($referencedColumns);
}
$foreignKey->setReferenceColumns($referencedColumns);
if ($referencedTable instanceof Table) {
$foreignKey->setReferenceTable($referencedTable);
} else {
$foreignKey->setReferenceTable(new Table($referencedTable, [], $this->mapper));
}
$foreignKey->setColumns($columns);
$foreignKey->setOptions($options);
$this->foreignKeys[] = $foreignKey;
return $this;
}