Fetching data from Symfony Doctrine DB - php

Question

I have just started my first symfony project and im a little bit confused.
I would like to query database for Shelfs which have no products on them.
I have come up with such sql query which seems to work:
select distinct she.id shelf_id,rac.id rack_id , row.id row_id, war.id warehouse_id from shelfs she
left join products pro on she.id = pro.warehouse_id
left join racks rac on she.rack_id=rac.id
left join rows row on rac.row_id = row.id
left join warehouses war on row.warehouse_id = war.id
where she.id not in (select shelf_id from products);
But i got no idea how to translate it to dql.
I have tried to write such function in Repository:
{
$entityManager = $this->getEntityManager();
$query = $entityManager->createQuery(
'SELECT distinct she
FROM App\Entity\Shelfs she
JOIN App\Entity\Racks rac
JOIN App\Entity\Rows row
JOIN App\Entity\Warehouses war
WHERE she NOT IN (SELECT prod FROM App\Entity\Products prod)
');
return $query->getResult();
}
That is partialy working as at first it showed the exact values that sql query did.
For example 3 Shelf id with out products on them.
But when I added product to one of those shelf it still shows that 3 are empty.
Thats my controller:
public function index()
{
$repository = $this->getDoctrine()->getRepository(Products::class);
$product = $repository->find(76); // that's for testing and it is refreshing
$warehousesRepository = $this->getDoctrine()
->getRepository(Warehouses::class);
$freespace = $warehousesRepository->findempty(); // that is not refreshing
return $this->render('base.html.twig', [
'selected_view' => 'pages/findPlace.html.twig',
'product' => $product,
'freespace' => $freespace
]);
}
Here is my Products Entity:
<?php
namespace App\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* #ORM\Entity(repositoryClass="App\Repository\ProductsRepository")
*/
class Products
{
/**
* #ORM\Id()
* #ORM\GeneratedValue()
* #ORM\Column(type="integer")
*/
private $id;
/**
* #ORM\Column(type="integer")
*/
private $barcode;
/**
* #ORM\Column(type="string", length=255)
*/
private $name;
/**
* #ORM\Column(type="float")
*/
private $price;
/**
* #ORM\Column(type="integer")
*/
private $quantity;
/**
* #ORM\Column(type="integer")
* #ORM\ManyToOne(targetEntity="Warehouses")
* #ORM\JoinColumn(name="warehouse_id", referencedColumnName="id")
*/
private $warehouse_id;
/**
* #ORM\Column(type="integer")
* #ORM\ManyToOne(targetEntity="Rows")
* #ORM\JoinColumn(name="row_id", referencedColumnName="id")
*/
private $row_id;
/**
* #ORM\Column(type="integer")
* #ORM\ManyToOne(targetEntity="Racks")
* #ORM\JoinColumn(name="rack_id", referencedColumnName="id")
*/
private $rack_id;
/**
* #ORM\Column(type="integer")
* #ORM\ManyToOne(targetEntity="Shelfs")
* #ORM\JoinColumn(name="shelf_id", referencedColumnName="id")
*/
private $shelf_id;
public function getId(): ?int
{
return $this->id;
}
public function getBarcode(): ?int
{
return $this->barcode;
}
public function setBarcode(int $barcode): self
{
$this->barcode = $barcode;
return $this;
}
public function getName(): ?string
{
return $this->name;
}
public function setName(string $name): self
{
$this->name = $name;
return $this;
}
public function getPrice(): ?float
{
return $this->price;
}
public function setPrice(float $price): self
{
$this->price = $price;
return $this;
}
public function getQuantity(): ?int
{
return $this->quantity;
}
public function setQuantity(int $quantity): self
{
$this->quantity = $quantity;
return $this;
}
public function getWarehouseId(): ?int
{
return $this->warehouse_id;
}
public function setWarehouseId(int $warehouse_id): self
{
$this->warehouse_id = $warehouse_id;
return $this;
}
public function getRowId(): ?int
{
return $this->row_id;
}
public function setRowId(int $row_id): self
{
$this->row_id = $row_id;
return $this;
}
public function getRackId(): ?int
{
return $this->rack_id;
}
public function setRackId(int $rack_id): self
{
$this->rack_id = $rack_id;
return $this;
}
public function getShelfId(): ?int
{
return $this->shelf_id;
}
public function setShelfId(int $shelf_id): self
{
$this->shelf_id = $shelf_id;
return $this;
}
}
I tried to make relations after creating entities by adding:
* #ORM\ManyToOne(targetEntity="Warehouses")
* #ORM\JoinColumn(name="warehouse_id", referencedColumnName="id")
but that didn't work so i guess i need to redo my entities and specify relations in the wizzard.
I have made relations using sql:
ALTER TABLE shelfs ADD FOREIGN KEY (rack_id) REFERENCES racks(id);
ALTER TABLE racks ADD FOREIGN KEY (row_id) REFERENCES rows(id);
ALTER TABLE rows ADD FOREIGN KEY (warehouse_id) REFERENCES warehouses(id);
ALTER TABLE products ADD FOREIGN KEY (warehouse_id) REFERENCES warehouses(id);
ALTER TABLE products ADD FOREIGN KEY (rack_id) REFERENCES racks(id);
ALTER TABLE products ADD FOREIGN KEY (row_id) REFERENCES rows(id);
ALTER TABLE products ADD FOREIGN KEY (shelf_id) REFERENCES shelfs(id);
ALTER TABLE order_items ADD FOREIGN KEY (product_id) REFERENCES products(id);
ALTER TABLE order_items ADD FOREIGN KEY (order_id) REFERENCES orders(id);
ALTER TABLE orders ADD FOREIGN KEY (user_id) REFERENCES users(id);
It should look something like this:
I feel like i got lost in the process somewhere.
I got no idea what's happening and i cannot find anything related in symfony documentation.

Answer 1

$sel = $this->createQueryBuilder('prod') // FROM App\Entity\Products prod
->select('prod')
// ->from('App\Entity\Products', 'prod'); // FROM App\Entity\Products prod
;
$res = $this->createQueryBuilder('she') // FROM App\Entity\Shelfs she
->select('DISTINCT she')
// ->from('App\Entity\Shelfs', 'she') // FROM App\Entity\Shelfs she
->leftJoin('she.rac', 'rac')
->leftJoin('she.row', 'row')
->leftJoin('she.war', 'war')
->andWhere('she NOT IN :(sel)')->setParameter('sel', $sel->getQuery()->getResult());
;
return $res->getQuery()->getResult();