public function Bycategorie($categorie)
{
$qb = $this->createQueryBuilder('u')
->select('u')
->where('u.categorie = :categorie')
->orderBy('u.id')
->setParameter('categorie',$categorie);
return $qb->getQuery()->getResult();
}
I want to know what the link is between:
$categorie, u and the entity in which I'm working,
Your question is related to Doctrine. About association mapping you can read here
In your example relation can be One-to-One (in theory) or Many-to-One (many users can obtain the same category). Many-to-One relation is more preferable variant and has a logical explanation.
helo, i have found what i was searching for.
my question was : what is the link between querybuilder parameters.
in my example i find that in the where clause (where('u.categorie =:categorie'))
'categorie' of the left(in the parenthesis) must be a colum of a table in my database.
thanks for your helps.
Related
Usually when querying in a custom repository class, I use something like this :
SELECT * FROM BundleName:Entity
But how do I do for associative entity ?
I have an entity "Ticket" and an entity "Tag".
It's a ManyToMany relation.
In phpMyAdmin, I've got a ticket_tag associative table but how do I get it with Doctrine ?
Thank you
You should use createQueryBuilder to handle your custom query requirement, in case if you are having a valid relationship over entities. for example:
Inside ticket repository you should handle like this, if you want to do more operations then you should learn more from here: https://symfony.com/doc/3.3/doctrine/repository.html
$query = $this->createQueryBuilder('t')
->select('count(t.id) as total_ticket, tag.id as tagId')
->leftJoin('t.tags', 'tag')
->groupBy('tag.id')
;
return $query->getQuery()->getResult();
Working on a legacy project which restricts the options available, has left me in a situation where I need to solve the following problem, ideally with doctrine.
I have two entities in different bundles that have a unidirectional many-to-one link.
BundleA has dependency on BundleB and the entities are linked similar to this:
BundleA/Entity/TheMany:
/**
* #var TheOne $theOne
* #ORM\ManyToOne(targetEntity="BundleB\Entity\TheOne")
* #ORM\JoinColumn(name="theone_id", referencedColumnName="id", onDelete="SET NULL")
*
*/
private $theOne;
From BundleB I now need to select all TheOne entities, and for each I need all of the TheMany entities.
The query also needs to be sortable on any property of TheOne entity, or the count of related TheMany entities.
It is fairly simple in Doctrine to build a query which brings back all TheOne entities and one of TheMany for each... however I am having some difficulty coming up with a Doctrine query that will bring back all of the related TheMany entities rather than just one.
I was hoping someone might have encountered a similar issue and therefore have some insight?
This may not have been explained clearly enough, in which case please direct me to explain further.
In the end I was able to achieve what I needed by using GROUP_CONCAT (which required inclusion of https://github.com/beberlei/DoctrineExtensions).
The query looks something like this:
$queryBuilder->select(
'to,
GROUP_CONCAT(DISTINCT tm.id SEPARATOR \',\') as theManyIds,
COUNT(DISTINCT tm.id) as HIDDEN theManyCount'
)
->from('BundleB\Entity\TheOne', 'to')
->leftJoin(
'BundleA\Entity\TheMany',
'tm',
Join::WITH,
'to.id = tm.theOne'
)
->groupBy('to.id')
->orderBy($sortString, $direction)
->setFirstResult($start)
->setMaxResults($limit);
I compromised by accepting the consequences of linking the two bundles - however that could have been avoided by making use of Native SQL and Result Set Mapping (http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/native-sql.html).
So what you are trying to do is to get all the ones and for each one find all the many. But you want to put all the many in one array or you want to create an array of array for the entities ? (what i did here)
$em = $this->getDoctrine()->getManager();
$theones = $em->getRepository('BundleA:theOne')
->createQueryBuilder('p')
->OrderBy(//your ordering)
->getQuery()
->getArrayResult()
$theManies = [];
for($theones as $theOne){
$theManies [] = $em->getRepository('BunbleB:theMany')
->createQueryBuilder('p')
->Where('p.theOne = :theOne')
->setParameter('theOne', $theOne)
->getQuery()
->getArrayResult();
$finalOnes[$theOne->getId()] = sizeof($theManies)
}
asort($finalOnes);
return array_keys($finalOnes);
I'm having a huge problem with ORM QueryBuilder. What I need to do is:
I need to fetch order with count of its products and plenty of associated entities (associated with order), but I assume they're not relevant here. I also need to order result by that count.
Could anyone give me an example of how this can be achieved? I would like to avoid "inline" DQLs if possible.
You can get data via Doctrine Query Builder.
You are supposed to left join products from Order and then group by order id. You can have COUNT(product.id) in your select statement and use the alias in order by clause to make your orders sorted. Below is a small code snippet from Repository.
/**
* #return \Doctrine\ORM\Query
*/
public function getHotelAndRoomType()
{
$qb = $this->createQueryBuilder('order')
->select('partial order.{id, orderId} as order, count(product.id) as total_products_in_order')
->leftJoin('AppBundle:Product', 'product', 'WITH', 'product.order = order.id')
->groupBy('order.id')
->orderBy('total_products_in_order', 'DESC')
;
return $qb->getQuery()->execute();
}
Note : Code not tested.
I'm trying to refine the query trying to select fewer possible values ..
For example I have an entity "Anagrafic" that contains your name, address, city, etc.,
and a form where I want to change only one of these fields, such as address.
I have created this query:
//AnagraficRepository
public function findAddress($Id)
{
$qb = $this->createQueryBuilder('r')
->select('r.address')
->where('r.id = :id')
->setParameter('id', $Id)
->getQuery();
return $qb->getResult();
}
there is something wrong with this query because I do not return any value, but if I do the query normally:
//Controller
$entity = $em->getRepository('MyBusinessBundle:Anagrafic')->find($id);
Return the right value.
How do I do a query selecting only one column?
Since you are requesting single column of each record you are bound to expect an array. That being said you should replace getResult with getArrayResult() because you can't enforce object hydration:
$data = $qb->getArrayResult();
Now, you have structure:
$data[0]['address']
$data[1]['address']
....
Hope this helps.
As for the discussion about performance in comments I generally agree with you for not wanting all 30 column fetch every time. However, in that case, you should consider writing named queries in order to minimize impact if you database ever gets altered.
You can use partial objects to only hydrate one field and still return a object.
This worked for me:
$qb = $repository->createQueryBuilder('i')
->select('i.name')
->...
Use partial objects like this to select fields
$qb = $this->createQueryBuilder('r')
->select(array('partial r.{id,address}'))
...
Put your field names between the brackets
I have in my controller $id it's a foreign key
$query = $em->getRepository('SurgeryPatientBundle:Patients')->findPatientByUserID($id);
And in my repository file this function
public function findPatientByUserID($id)
{
return $this->getEntityManager()
->createQuery('SELECT p FROM SurgeryPatientBundle:Patients p WHERE p.user ='.$id.'')
->execute();
}
I want get an instance of object but still get an array. Query with find($id) works good
edit
Problem solves , I'm so stupid , I had invoked to $query[0]
You can use $query->getSingleResult(); as well
see here
http://docs.doctrine-project.org/en/2.1/reference/dql-doctrine-query-language.html#query-result-formats
If you want to grab the object, you shouldn't be using DQL. Doctrine entities have a find function that takes care of this for you.
Instead of all that code, you can just use (in your controller):
$em->getRepository('SurgeryPatientBundle:Patients')->find($id);
DQL is very powerful, but for simple lookups like this using the built in find methods will be more efficient & provide the entities as doctrine objects.