I have two entities: Location and Program. They have a many-to-many relationship. A program has the attribute $status, which can be 'published' or 'unpublished'.
Now I wish to run a query (with the doctrine query builder) to return all of my Location entities which have a relationship with at least 10 Program entities with the $status being 'published'.
My code so far
public function findLocationsOfPublishedPrograms()
{
$qb = $this->createQueryBuilder('l')
->innerJoin('l.programs', 'p')
->andWhere('p.status = \'published\'')
->getQuery()->getResult();
return $qb;
}
This query retuns all Location entities that have at least one published program. But is there any way I could set a condition to only return Location entities which have at least 10 published programs?
You could innerJoin WITH p.status = published. Then addWhere with a count of p.* >= 10
Examples of innerJoin with conditions are in the docs:
https://www.doctrine-project.org/projects/doctrine-orm/en/2.6/reference/query-builder.html#working-with-querybuilder
Related
In my Symfony project, I have an "ExerciceComptable" and a "DocumentAttendu" entities.
There is a relation in ExerciceComptable that reference DocumentAttendu (OneToMany).
In DocumentAttendu, I have a property named "recu" which is a boolean.
I need to retrieve all "ExerciceComptable" that are completed, meaning that all "DocumentAttendu" for an "ExerciceComptable" have the property "recu" set to true.
How can I achieve that ?
ExerciceComptable
#[ORM\OneToMany(mappedBy: 'exercice', targetEntity: DocumentAttendu::class)]
private Collection $documentAttendus;
/**
* #return Collection<int, DocumentAttendu>
*/
public function getDocumentAttendus(): Collection
{
return $this->documentAttendus;
}
public function addDocumentAttendu(DocumentAttendu $documentAttendu): self
{
if (!$this->documentAttendus->contains($documentAttendu)) {
$this->documentAttendus->add($documentAttendu);
$documentAttendu->setExercice($this);
}
return $this;
}
public function removeDocumentAttendu(DocumentAttendu $documentAttendu): self
{
if ($this->documentAttendus->removeElement($documentAttendu)) {
if ($documentAttendu->getExercice() === $this) {
$documentAttendu->setExercice(null);
}
}
return $this;
}
DocumentAttendu
#[ORM\ManyToOne(inversedBy: 'documentAttendus')]
#[ORM\JoinColumn(nullable: false)]
private ?ExerciceComptable $exercice = null;
#[ORM\Column(nullable: true)]
private ?bool $recu = null;
public function getExercice(): ?ExerciceComptable
{
return $this->exercice;
}
public function setExercice(?ExerciceComptable $exercice): self
{
$this->exercice = $exercice;
return $this;
}
public function isRecu(): ?bool
{
return $this->recu;
}
public function setRecu(?bool $recu): self
{
$this->recu = $recu;
return $this;
}
What I tried
$qb = $this->createQueryBuilder( 'ec' );
$qb->join( 'ec.documentAttendus', 'da');
$qb->andWhere('da.recu = true');
This is not working properly. If just one "DocumentAttendu" have "recu" = true, then the query will find it. I need all "DocumentAttendu" to have "recu" = true, not just one out of five for example.
I also tried to use Criteria, but I don't really understand how that works. I tried some line with "having('COUNT')", etc...But I'm not sure I used it correctly.
Important point, I need to be in "ExerciceComptableRepository".
The easiest solution might be a subquery. More specifically, use the Expr class from doctrine. Using a "where not exists (subquery)", should give you the correct results.
You'd get something like:
// This subquery fetches all DocumentAttendu entities
// for the ExerciceComptable where recu is false
$sub = $this->getEntityManager()->getRepository(DocumentAttendu::class)->createQueryBuilder('da');
$sub->select('da.id');
$sub->where('da.exercice = ec.id');
$sub->andWhere('da.recu IS FALSE');
// We fetch the ExerciceComptable entities, that don't
// have a result from the above sub-query
$qb = $this->createQueryBuilder('ec');
$qb->andWhere($qb->expr()-not(
$qb->expr()->exists($sub->getDQL()) // This resolves to WHERE NOT EXISTS (...)
))
In short: you're fetching all the ExerciceComptable entities that do not have DocumentAttendu entities with recu = false
Note: if a ExerciceComptable entity doesn't have any documentAttendus, this query will also return that ExerciceComptable entity
My solution is not a full doctrine solution and could make performance issue for larger data, but i believe it could be a great way to deal with very specific case like this.
Lets talk about the correct Sql query before doctrine, it should be something like that :
SELECT ec.id FROM ExerciceComptable ec
INNER JOIN (SELECT COUNT(*) total, exercice_comptable_id FROM DocumentAttendu)
all_documents ON all_documents.exercice_comptable_id = ec.id // COUNT ALL document for each execice
INNER JOIN (SELECT COUNT(*) total, exercice_comptable_id FROM DocumentAttendu da WHERE da.recu = 1)
received_documents ON received_documents.exercice_comptable_id = ec.id // COUNT ALL received document for each execice
WHERE all_documents.total = received_document.total;
Then only the ExerciceComptable with a total documents = received document will be retrieved.
It's important to know that subquery inside select are bad for performance since it doest 1 query for each result (so if you have 100 ExerciceComptable it will do 100 subqueries) where subquery using join only do 1 query for the the whole query. This is why i builded my query like that.
The problem is you wont get entity object with a raw mysql function inside a repositories.
So you have two choice.
Using subqueries inside Doctrine DQL (which is painfull for very complexe case). I advise you to do it only if you have performance issue
Execute the first query with raw sql -> retrieve only the ids -> call doctrine function findBy(['id' => $arrayOfIds]) -> you have the object you're looking for.
It's a trick, it's true.
But i believe specific usecase with doctrine are often very hard to maintain. Where sql query can be easily tested and changed.
The fact is that only the first will be the one to maintain and the second query will always be very fast since query on id are very fast.
If you want to see a case of DQL with subquery look at : Join subquery with doctrine 2 DBAL
I gave you generic guideline and i hope it helped.
Just never forget : Never Ever do subequeries inside select or where. It has very bad performance since it does one subqueries on server side for each line of result. Use Inner / Left Join to do that
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 am developing a basic web-app in my job. I have to work with some sql server views. I made the decision of trying native queries, and once tested it's functionality, try to write some classes to code all the queries and kinda forget their implementation.
So my issue is, I've got an Entity in Acme/MyBundle/Entity/View1.php.
This entity has got all the attributes matching the table and also it's getters and setters.
I guess this entity is well mapped to the DB (Doctrine cant work with views easily).
My aim is to let a Controller be able to fetch some data from those views(SQL SERVER) and return it to the view (twig) so it can display the info.
$returned_atts = array(
"att1" => $result[0]->getAttribute1(), //getter from the entity
"att2" => $result[1]->getAttribute2(), //getter from the entity
);
return $returned_atts;`$sql = "SELECT [Attribute1],[Attribute2],[Attribute3] FROM [TEST].[dbo].[TEST_VIEW1]"; //THIS IS THE SQL SERVER QUERY
$rsm = new ResultSetMapping($em); //result set mappin object
$rsm->addEntityResult('Acme\MyBundle\Entity\View1', 'view1'); //entity which is based on
$rsm->addFieldResult('view1', 'Attribute1', 'attribute1'); //only choose these 3 attributes among the whole available
$rsm->addFieldResult('view1', 'Attribute2', 'attribute2');
$rsm->addFieldResult('view1', 'Attribute3', 'attribute3');
//rsm built
$query = $em->createNativeQuery($sql, $rsm); //execute the query
$result = $query->getResult(); //get the array
It should be possible to return the array straight from the getResult() method isn't it?
And what's killing me, how can I access the attribute1, attriute2 and attriute2?
$returned_atts = array(
"att1" => $result[0]->getAttribute1(), //getter from the entity
"att2" => $result[1]->getAttribute2(), //getter from the entity
);
return $returned_atts;`
If you want result as array, you don't need to use ResultSetMapping.
$sql = " SELECT * FROM some_table";
$stmt = $this->getDoctrine()->getEntityManager()->getConnection()->prepare($sql);
$stmt->execute();
$result = $stmt->fetchAll();
That is a basic example for controller action. You can dump the result, use var_dump(), to see how to access your particular field values.
More examples here Doctrine raw sql
I have 4 entities that are related in hierarchical levels: Company, Department and Employee. Company and Department are related with a ManyToOne bidirectional relation. Department and Employee are related through another entity with 2 OneToMany bidirectional relations because I needed additional parameters for the relation. So basically the final schema is this :
Company <-> Department <-> DepartmentEmployee <-> Employee
I'm trying to select one department from the company of the current user and to get all the employees of this department. I'm using a custom repository to build my query with the query builder like this:
// DepartmentRepository.php
public function getOneWithEmployees($slug, $company)
{
$qb = $this->createQueryBuilder('d')
->where('d.slug = :slug')
->andWhere('c.slug = :company')
->setParameters(array('slug' => $slug, 'company' => $company))
->leftJoin('d.company', 'c')
->addSelect('c')
->leftJoin('d.departmentEmployee', 'r')
->addSelect('r')
->leftJoin('r.employee', 'e')
->addSelect('e');
return $qb->getQuery()->getOneOrNullResult();
}
The point being to reduce the number of queries made, but when I execute this query, I still get 32 queries made to the database (I have 15 employees in the department).
When I remove the part
->leftJoin('r.employee', 'e')
->addSelect('e')
I get only one query executed like expected.
How can I do a left join on a left join without triggering multiples queries?
My Employee entity is the inverse side of 2 OneToOne relations: User and Invitation. When I explicitly include these relations in the query with left join, no extra queries are made, but if I leave them out then Doctrine automatically makes queries to fetch them. Looking in the Doctrine FAQ I found this:
4.7.1. Why is an extra SQL query executed every time I fetch an entity with a one-to-one relation?
If Doctrine detects that you are fetching an inverse side one-to-one association it has to execute an additional query to load this object, because it cannot know if there is no such object (setting null) or if it should set a proxy and which id this proxy has.
To solve this problem currently a query has to be executed to find out this information.
Link
So the only solution to avoid extra queries is to build my query like this:
$qb = $this->createQueryBuilder('d')
->where('d.slug = :slug')
->andWhere('c.slug = :company')
->setParameters(array('slug' => $slug, 'company' => $company))
->leftJoin('d.company', 'c')
->addSelect('c')
->leftJoin('d.departmentEmployee', 'r')
->addSelect('r')
->leftJoin('r.employee', 'e')
->addSelect('e')
->leftJoin('e.user', 'u')
->addSelect('u')
->leftJoin('e.invitation', 'i')
->addSelect('i');
return $qb->getQuery()->getOneOrNullResult();
i'm a symfony beginner and i want to make a blog with the framework. i use repository to get home articles with this method :
public function getHomeArticles($offset = null, $limit = null)
{
$qb = $this->createQueryBuilder('a')
->leftJoin('a.comments', 'c')
->addSelect('c')
->addOrderBy('a.created', 'DESC');
if (false === is_null($offset))
$qb->setFirstResult($offset);
if (false === is_null($limit))
$qb->setMaxResults($limit);
return $qb->getQuery()
->getResult();
}
so in my database i have 10 articles. In my BlogController i use :
$blog = $em->getRepository('TestBlogBundle:Article')
->getHomeArticles(3,4);
With this i want 4 articles. But in return i also have one article.
What is the problem?
This is a know issue where setFirstResult() and setMaxResults() need to be use with care if your query contains a fetch-joined collection.
As stated about First and Max Result Items:
If your query contains a fetch-joined collection specifying the result
limit methods are not working as you would expect. Set Max Results
restricts the number of database result rows, however in the case of
fetch-joined collections one root entity might appear in many rows,
effectively hydrating less than the specified number of results.
Instead, you can:
Lazy load
use the Paginator (as stated by #Marco here)
Use Doctrine\Common\Collections\Collection::slice()