Escapes an alias name string.

Force all alias names to be strictly alphanumeric-plus-underscore. In contrast to DatabaseConnection::escapeField() / DatabaseConnection::escapeTable(), this doesn't allow the period (".") because that is not allowed in aliases.

Parameters

string $field: An unsanitized alias name.

Return value

string The sanitized alias name.

1 call to Connection::escapeAlias()

Connection::escapeAlias in core/lib/Drupal/Core/Database/Driver/mysql/Connection.php

Escapes an alias name string.

2 methods override Connection::escapeAlias()

Connection::escapeAlias in core/lib/Drupal/Core/Database/Driver/mysql/Connection.php

Escapes an alias name string.

Connection::escapeAlias in core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php

Escapes an alias name string.

File

core/lib/Drupal/Core/Database/Connection.php, line 1049

Class

Connection

Base Database API class.

Namespace

Drupal\Core\Database

Code

public function escapeAlias($field) {
  if (!isset($this->escapedAliases[$field])) {
    $this->escapedAliases[$field] = preg_replace('/[^A-Za-z0-9_]+/', '', $field);
  }
  return $this->escapedAliases[$field];
}

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