Yii ActiveRecord Simultaneous Update & Insert Fails without Errors - mysql

Question

I have a controller where I need to invalidate a token and create a new token.
The controller code snapshot looks something like this:
function __regenerate_token($t)
{
if($token = Token::find()->where('token = :t' , ['t'=>$t])->one())
{
$token->expired = true;
$token->save(); // ->save(false);
}
$newtoken = new Token();
$newtoken->attributes = [
'token'=> strtolower(trim(\com_create_guid(), '{}')),
'expiry_at' => strtotime("+10 minutes"),
];
$newtoken->save(false);
return $newtoken;
}
Now whats happening is - update() also returns true & no errors. Same with insert. Individually run, they work fine. But if I call them they way it is - it fails silently.
The underlying table is innoDB. I tried to wrap the update & insert inside a transaction, but same issue.
Regard

Answer 1

I found out the reason. I was calling __regenerate_token in a function after a db-transaction. However in certain condition, the execution exited the function before committing / rolling back the changes. This caused the __regenerate_token also become part of the transaction and failed.
pseudo code
function debit_account
begin transaction
try
do stuff
if some_condition
return false #<-- this caused issue
endif
commit
return true
catch
rollback
return false
end function
debit_account()
__regenerate_token() #fails when some_condition is hit
Hope this someone else who hits a problem like this!