function Schema::addPrimaryKey

Add a primary key.

Parameters

$table: The table to be altered.

$fields: Fields for the primary key.

Overrides Schema::addPrimaryKey

File

core/modules/sqlite/src/Driver/Database/sqlite/Schema.php, line 748

Class

Schema

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

Namespace

Code

public function addPrimaryKey($table, $fields) {
  if (!$this->tableExists($table)) {
    throw new SchemaObjectDoesNotExistException("Cannot add primary key to table '{$table}': table doesn't exist.");
  }
  $old_schema = $this->introspectSchema($table);
  $new_schema = $old_schema;
  if (!empty($new_schema['primary key'])) {
    throw new SchemaObjectExistsException("Cannot add primary key to table '{$table}': primary key already exists.");
  }
  $new_schema['primary key'] = $fields;
  $this->ensureNotNullPrimaryKey($new_schema['primary key'], $new_schema['fields']);
  $this->alterTable($table, $old_schema, $new_schema);
}