phalcon php switches update to insert - php

Question

For some reason phalcon is replacing my order to an insert instead of an update (I can see that in the logs)
$phql = "UPDATE Vouchers SET user_name = :userName:, used = true WHERE voucher_code = :voucherCode:";
$status = $app->modelsManager->executeQuery($phql, array(
'userName' => $voucherReq->userName,
'voucherCode' => $voucherCode
));
I'm probably missing something overriding an update to an insert... well that's a lot. This is a special model that doesn't follow the common ID pattern (if it helps).
In the logs I can see:
[Mon Oct 13 23:49:49.698965 2014] [:error] [pid 379] [client 82.113.121.157:60949] PHP Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[23505]: Unique violation: 7 ERROR: duplicate key value violates unique constraint "voucher_voucher_code_idx"' in /var/www/api/index.php:41\nStack trace:\n
#0 [internal function]: PDOStatement->execute()\n
#1 [internal function]: Phalcon\\Db\\Adapter\\Pdo->executePrepared(Object(PDOStatement), Array, Array)\n
#2 [internal function]: Phalcon\\Db\\Adapter\\Pdo->execute('INSERT INTO "vo...', Array, Array)\n
#3 [internal function]: Phalcon\\Db\\Adapter->insert('vouchers', Array, Array, Array)\n
#4 [internal function]: Phalcon\\Mvc\\Model->_doLowInsert(Object(Phalcon\\Mvc\\Model\\MetaData\\Memory), Object(Phalcon\\Db\\Adapter\\Pdo\\Postgresql), 'vouchers', false)\n
#5 [internal function]: Phalcon\\Mvc\\Model->save()\n
#6 [internal function]: Phalcon\\Mvc\\Model->update(Array)\n
#7 [internal function]: Phalcon\\Mvc\\Model\\Query->_executeUpdate(Array, Array, NULL)\n
#8 [internal function]: Phalcon\\Mvc\\Model\\Query->execute(Array, NULL)\n
#9 /var/www/api/index.php(41): Phalcon\\Mvc\\Model\\Manager->executeQue in /var/www/api/index.php on line 41
Any thoughts?

Answer 1

I've suffered from similar behavior.
Seems that Phalcon needs the update where clause to be on the primary key in order to update that specific row. I've added id as a primary key and all went OK.
In your case set voucher_code as primary key for that table.
Hope this helps