Doctrine QueryBuilder summary functions in Symfony entity repositories? - doctrine-orm

Question

Is there a way I can use min() (or equivalent) in Doctrine's QueryBuilder?
The page I'm working on shows a table of invoices for the current (or impersonated) user. It has a row for each of their invoices and has nested collapsible rows of any associated payments (see below image)
My issue is that in my twig template I need to be able to be identify at the Invoice-level if any of it's Payments have not been approved. If any payment is not approved then I need to flag both the payment and the Invoice row it relates to. For example, in the below example, "Invoice #1" is yellow because it has a nested "Payment #2" record that is yellow (not approved):
To get access to this at the Invoice-level I have been trying to do it through my InvoiceRepository but I'm unclear if/how this can be done using QueryBuilder. I somehow need anyToBeApproved (which isn't an attribute of my Invoice entity) to be available, and still have the Payment information also included:
select a.*, min(b.approved) as anyToBeApproved
from Invoice a
left join Payment b
on a.invoice_id=b.id
where a.member_id=$Uid
group by a.id
My controller:
$invoices = $em->getRepository('AppBundle:Invoice')->OutstandingForUser($this->getUser()->getId());
My QueryBuilder:
public function OutstandingForUser($Uid)
{
return $this->createQueryBuilder('i')
->select('i')
->leftJoin('i.member_id','m')
->leftJoin('i.payment_ids','p')
->andwhere('m.member_id = :MemberId' )
->setParameter('MemberId',$Uid)
->getQuery()
->getResult();
}

Answer 1

I don't know why this hasn't been answered yet, but you should be able to use those aggregate functions just fine.
The following aggregate functions are allowed in SELECT and GROUP BY
clauses: AVG, COUNT, MIN, MAX, SUM
See the documentation: http://doctrine-orm.readthedocs.io/projects/doctrine-orm/en/latest/reference/dql-doctrine-query-language.html#aggregate-functions
You can use aggregate functions inside of querybuilder ->select() OK.
I'd rewrite your function as something like:
public function OutstandingForUser($Uid)
{
return $this->createQueryBuilder('i')
->select('i, min(p.approved) as anyToBeApproved')
->leftJoin('i.member','m', 'WITH', 'm.member_id = :MemberId') // this works better with not actually constraining your left join, otherwise you might as well just use innerJoin
->leftJoin('i.payment','p')
->groupBy('i.id')
->setParameter('MemberId',$Uid)
->getQuery()
->getResult();
}
Here's an alternative approach, given you seem to want all the invoice rows anyway.
Change your fetch function to:
public function OutstandingForUser($Uid)
{
return $this->createQueryBuilder('i')
->select('i, p, m') // may as well pre-fetch all entities
->join('i.member','m') // member is surely mandatory? so no left join required
->leftJoin('i.payment','p') // payments may not be present, so left join
->where('m.member_id = :MemberId')
->setParameter('MemberId',$Uid)
->getQuery()
->getResult();
}
Then in your invoice entity do something like
public function hasUnapprovedPayments () {
foreach ($this->getPayments() as $payment) {
if (!$payment->approved()) {
return true;
}
}
return false;
}
public function hasPayments () {
return !$this->getPayments()->isEmpty(); // assuming doctrine collection
}
These functions will be pretty fast as you have already hydrated the entities in the function above.
You could also add a similar isFullyPaid method that loops through payments, but I would personally make that a bool or datetime on Invoice that is set when the invoice is completely paid.
Then in twig you can do stuff like:
{% for invoice in invoices %}
{% if invoice.hasUnapprovedPayments %} do something {% endif %}
{% if invoice.hasPayments %} do something {% endif %}
{# loop through all your payments etc #}
{% endfor %}
Which should make it pretty easy to get the layout you want.