| public getOldPrimaryKey ( boolean $asArray = false ) : mixed | ||
| $asArray | boolean | whether to return the primary key value as an array. If `true`, the return value will be an array with column name as key and column value as value. If this is `false` (default), a scalar value will be returned for non-composite primary key. |
| return | mixed | the old primary key value. An array (column name => column value) is returned if the primary key is composite or `$asArray` is `true`. A string is returned otherwise (null will be returned if the key value is null). |
public function getOldPrimaryKey($asArray = false)
{
$keys = $this->primaryKey();
if (empty($keys)) {
throw new Exception(get_class($this) . ' does not have a primary key. You should either define a primary key for the corresponding table or override the primaryKey() method.');
}
if (!$asArray && count($keys) === 1) {
return isset($this->_oldAttributes[$keys[0]]) ? $this->_oldAttributes[$keys[0]] : null;
} else {
$values = [];
foreach ($keys as $name) {
$values[$name] = isset($this->_oldAttributes[$name]) ? $this->_oldAttributes[$name] : null;
}
return $values;
}
}