Feature: aggregator for accompanying course by geographical level

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;
+    }
 }