public function actionPost($userId, $friendId)
{
if ($userId === $friendId) {
throw new Exception('You can not become a friend of yourself');
}
$friendship = new Friendship();
$friendship->user_id = $userId;
$friendship->friend_id = $friendId;
if (!$friendship->validate()) {
throw new Exception('Invalid data provided');
}
$transaction = Yii::$app->db->beginTransaction();
try {
// Mutuality update is handled in Friendship EVENT_BEFORE_INSERT
if (!$friendship->save()) {
throw new DbException('Could not create friendship');
}
$transaction->commit();
} catch (Exception $exception) {
$transaction->rollBack();
throw $exception;
}
$friendshipSummary = $friendship->jsonSummary;
return $friendshipSummary;
}
