public Schema::addPrimaryKey($table, $fields)
Add a primary key.
Parameters
$table: The table to be altered.
$fields: Fields for the primary key.
Throws
\Drupal\Core\Database\SchemaObjectDoesNotExistException If the specified table doesn't exist.
\Drupal\Core\Database\SchemaObjectExistsException If the specified table already has a primary key.
Overrides Schema::addPrimaryKey
File
- core/lib/Drupal/Core/Database/Driver/sqlite/Schema.php, line 660
Class
- Schema
- SQLite implementation of \Drupal\Core\Database\Schema.
Namespace
Drupal\Core\Database\Driver\sqlite
Code
public function addPrimaryKey($table, $fields) {
if (!$this->tableExists($table)) {
throw new SchemaObjectDoesNotExistException(t("Cannot add primary key to table @table: table doesn't exist.", array('@table' => $table)));
}
$old_schema = $this->introspectSchema($table);
$new_schema = $old_schema;
if (!empty($new_schema['primary key'])) {
throw new SchemaObjectExistsException(t("Cannot add primary key to table @table: primary key already exists.", array('@table' => $table)));
}
$new_schema['primary key'] = $fields;
$this->alterTable($table, $old_schema, $new_schema);
}
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