Feature: aggregator for accompanying course by geographical level

src/Bundle/ChillMainBundle/Entity/GeographicalUnit.php

@@ -44,7 +44,7 @@ class GeographicalUnit
     private string $unitRefId;
 
     /**
-     * @ORM\ManyToOne(targetEntity=GeographicalUnitLayer::class)
+     * @ORM\ManyToOne(targetEntity=GeographicalUnitLayer::class, inversedBy="units")
      */
     private ?GeographicalUnitLayer $layer;
 

src/Bundle/ChillMainBundle/Entity/GeographicalUnitLayer.php

@@ -2,6 +2,8 @@
 
 namespace Chill\MainBundle\Entity;
 
+use Doctrine\Common\Collections\ArrayCollection;
+use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping as ORM;
 
 /**
@@ -29,6 +31,16 @@ class GeographicalUnitLayer
      */
     private string $refId = '';
 
+    /**
+     * @ORM\OneToMany(targetEntity=GeographicalUnit::class, mappedBy="layer")
+     */
+    private Collection $units;
+
+    public function __construct()
+    {
+        $this->units = new ArrayCollection();
+    }
+
     /**
      * @return int|null
      */
@@ -54,4 +66,20 @@ class GeographicalUnitLayer
         $this->name = $name;
         return $this;
     }
+
+    /**
+     * @return string
+     */
+    public function getRefId(): string
+    {
+        return $this->refId;
+    }
+
+    /**
+     * @return Collection
+     */
+    public function getUnits(): Collection
+    {
+        return $this->units;
+    }
 }

src/Bundle/ChillMainBundle/Repository/GeographicalUnitLayerLayerRepository.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace Chill\MainBundle\Repository;
+
+use Chill\MainBundle\Entity\GeographicalUnit;
+use Chill\MainBundle\Entity\GeographicalUnitLayer;
+use Doctrine\ORM\EntityManagerInterface;
+use Doctrine\ORM\EntityRepository;
+use UnexpectedValueException;
+
+final class GeographicalUnitLayerLayerRepository implements GeographicalUnitLayerRepositoryInterface
+{
+    private EntityRepository $repository;
+
+    public function __construct(EntityManagerInterface $em)
+    {
+        $this->repository = $em->getRepository($this->getClassName());
+    }
+
+    public function find($id): ?GeographicalUnitLayer
+    {
+        return $this->repository->find($id);
+    }
+
+    /**
+     * @return array|GeographicalUnitLayer[]
+     */
+    public function findAll(): array
+    {
+        return $this->repository->findAll();
+    }
+
+    /**
+     * @return array|GeographicalUnitLayer[]
+     */
+    public function findBy(array $criteria, ?array $orderBy = null, ?int $limit = null, ?int $offset = null): array
+    {
+        return $this->repository->findBy($criteria, $orderBy, $limit, $offset);
+    }
+
+    public function findOneBy(array $criteria): ?GeographicalUnitLayer
+    {
+        return $this->repository->findOneBy($criteria);
+    }
+
+    public function getClassName(): string
+    {
+        return GeographicalUnitLayer::class;
+    }
+
+    public function findAllHavingUnits(): array
+    {
+        $qb = $this->repository->createQueryBuilder('l');
+
+        return $qb->where($qb->expr()->gt('SIZE(l.units)', 0))
+            ->getQuery()
+            ->getResult();
+    }
+}

src/Bundle/ChillMainBundle/Repository/GeographicalUnitLayerRepositoryInterface.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Chill\MainBundle\Repository;
+
+use Chill\MainBundle\Entity\GeographicalUnitLayer;
+use Doctrine\Persistence\ObjectRepository;
+
+interface GeographicalUnitLayerRepositoryInterface extends ObjectRepository
+{
+    /**
+     * @return array|GeographicalUnitLayer[]
+     */
+    public function findAllHavingUnits(): array;
+}