ZF2 Zend\Db Insert/Update Using Mysql Expression (Zend\Db\Sql\Expression?)

Question

Is there any way to include MySQL expressions like NOW() in the current build of ZF2 (2.0.0beta4) through Zend\Db and/or TableGateway insert()/update() statements?

Here is a related post on the mailing list, though it hasn't been answered: http://zend-framework-community.634137.n4.nabble.com/Zend-Db-Expr-and-Transactions-in-ZF2-Db-td4472944.html

It appears that ZF1 used something like:

    $data = array( 
        'update_time'   => new \Zend\Db\Expr("NOW()") 
    ); 

And after looking through Zend\Db\Sql\Expression I tried:

    $data = array(
        'update_time' => new \Zend\Db\Sql\Expression("NOW()"),
    );

But get the following error:

Catchable fatal error: Object of class Zend\Db\Sql\Expression could not be converted to string in /var/www/vendor/ZF2/library/Zend/Db/Adapter/Driver/Pdo/Statement.php on line 256

As recommended here: http://zend-framework-community.634137.n4.nabble.com/ZF2-beta3-Zend-Db-Sql-Insert-new-Expression-now-td4536197.html I'm currently just setting the date with PHP code, but I'd rather use the MySQL server as the single source of truth for date/times.

    $data = array(
        'update_time' => date('Y-m-d H:i:s'),
    );

Thanks, I appreciate any input!

Craftsman

Answer 1

I am not sure if they fixed this in the latest updates, but it was a know bug and even if they said it was fixed, for me it still didn't work after the fix.

Skid

Thanks for the response and link, I'll update to the latest source and see if it persists. – Craftsman

zend framework 2.0 beta 6 and still no solution to this problem!?!?! – Impresario

Answer 2

Zend_Db_Sql_Expression works for me now.

$data = array(
    'update_time' => new \Zend\Db\Sql\Expression("NOW()"),
);

Mack

Would you mind adding a little more info around this answer? Thank you – Tack

Answer 3

It works for me too. Maybe, your problem was like mine. The string error conversion was because the parameter that I passed to method was elements of array and not the array. Check this and have sure that you are passing $object->method($array).

Multilateral

Answer 4

You can try:

\Zend\Db\Sql\Predicate\Literal();
//or
\Zend\Db\Sql\Literal();
------------------------------------
$data = array(
    'update_time' => new \Zend\Db\Sql\Literal("NOW()"),
);

https://framework.zend.com/manual/2.2/en/modules/zend.db.sql.html#literal-literal

Nolin