protected function Schema::shortenIndex

protected Schema::shortenIndex(&$index)

Helper function for normalizeIndexes().

Shortens an index to 191 characters.

Parameters

array $index: The index array to be used in createKeySql.

See also

Drupal\Core\Database\Driver\mysql\Schema::createKeySql()

Drupal\Core\Database\Driver\mysql\Schema::normalizeIndexes()

File

core/lib/Drupal/Core/Database/Driver/mysql/Schema.php, line 345

Class

Schema

MySQL implementation of \Drupal\Core\Database\Schema.

Namespace

Drupal\Core\Database\Driver\mysql

Code

protected function shortenIndex(&$index) {
  if (is_array($index)) {
    if ($index[1] > 191) {
      $index[1] = 191;
    }
  }
  else {
    $index = array($index, 191);
  }
}