Question

is it possible to get data with a subselect in dql and putting the result in a class attribute which is not a entity column?

hasfreelist is a class attribute but not a entity column in mysql.

This is my dql:

SELECT e, DATE(e.begin) dbegin, 
(SELECT COUNT(g) FROM AcmeDemoBundle:list  g WHERE e.id = g.fkevent) AS e.hasfreelists     
FROM AcmeDemoBundle:event e JOIN e.fklocation l 
WHERE e.enabled=1 e.begin>=:from 
ORDER BY dbegin, e.topevent DESC

I have the following error:

An exception has been thrown during the rendering of a template 
("[Syntax Error] line 0, col 143: Error: 
Expected Doctrine\ORM\Query\Lexer::T_FROM, got '.'")

But it tells me nothing.
Thank you for you help.

Answer 1

Seems to me you can define an association between Event and List, and use the SIZE function to add your select. Much easier and logical that way:

SELECT e, DATE(e.begin) AS dbegin, SIZE(e.lists) AS number_of_lists
FROM [...]

You can still define a hasFreeList method on your entity class, which would return sizeof($this->lists) > 0.

But the reason you are getting this error, I think, is because you define your subselect as e.hasfreelist. While it is a property of your class, this is a DQL syntax error (should be (SELECT x FROM y) AS z). Also, your Date select lacks the AS operator.