Select entries between dates in doctrine 2

I will go insane with this minimal error that I'm not getting fix. I want to select entries between two days, the examples below ilustrate all my fails:

opt 1.

$qb->where('e.fecha > ' . $monday->format('Y-m-d'));
$qb->andWhere('e.fecha < ' . $sunday->format('Y-m-d'));

result (0 entries):

SELECT r0_.id_reservacion AS id_reservacion0, r0_.fecha AS fecha1, r0_.cliente AS cliente2 
FROM reservacion r0_ 
WHERE (r0_.fecha > 2012 - 07 - 16) AND (r0_.fecha < 2012 - 07 - 22)

opt 2

$qb->add('where', 'e.fecha between 2012-01-01 and 2012-10-10');

result (0 entries):

SELECT r0_.id_reservacion AS id_reservacion0, r0_.fecha AS fecha1, r0_.cliente AS cliente2 
FROM reservacion r0_ WHERE r0_.fecha 
BETWEEN 2012 - 01 - 01 AND 2012 - 10 - 10

This is my table with current entries:

id      fecha            cliente
1   2012-07-16 00:00:00    2    
2   2012-07-16 13:00:00    4    
3   2012-07-22 23:00:00    4

Edit 1

In order to evaluate the sql to avoid doubts, I ran this query:

$qb->where('e.fecha > ' . $sunday->format('Y-m-d'));

result (3 entries):

SELECT r0_.id_reservacion AS id_reservacion0, r0_.fecha AS fecha1, r0_.cliente AS cliente2 

So, looks like the sql is not the problem. FROM reservacion r0_ WHERE r0_.fecha > 2012 - 07


You can do either…

$qb->where('e.fecha BETWEEN :monday AND :sunday')
   ->setParameter('monday', $monday->format('Y-m-d'))
   ->setParameter('sunday', $sunday->format('Y-m-d'));

or…

$qb->where('e.fecha > :monday')
   ->andWhere('e.fecha < :sunday')
   ->setParameter('monday', $monday->format('Y-m-d'))
   ->setParameter('sunday', $sunday->format('Y-m-d'));

I believe the correct way of doing it would be to use query builder expressions:

$now = new DateTimeImmutable();
$thirtyDaysAgo = $now->sub(new \DateInterval("P30D"));
$qb->select('e')
   ->from('Entity','e')
   ->add('where', $qb->expr()->between(
            'e.datefield',
            ':from',
            ':to'
        )
    )
   ->setParameters(array('from' => $thirtyDaysAgo, 'to' => $now));

http://docs.doctrine-project.org/en/latest/reference/query-builder.html#the-expr-class

Edit: The advantage this method has over any of the other answers here is that it's database software independent - you should let Doctrine handle the date type as it has an abstraction layer for dealing with this sort of thing.

If you do something like adding a string variable in the form 'Y-m-d' it will break when it goes to a database platform other than MySQL, for example.