up schema with relations between objects

src/Entity/Selling.php

@@ -19,9 +19,6 @@ class Selling
     #[ORM\Column(length: 255, nullable: true)]
     private ?string $note = null;
 
-    #[ORM\Column(type: Types::OBJECT)]
-    private ?object $products = null;
-
     #[ORM\Column]
     private ?float $sum = null;
 
@@ -34,9 +31,16 @@ class Selling
     #[ORM\ManyToMany(targetEntity: GroupOfProducts::class, mappedBy: 'sellings')]
     private Collection $groupOfProducts;
 
+    /**
+     * @var Collection<int, Product>
+     */
+    #[ORM\ManyToMany(targetEntity: Product::class, inversedBy: 'sellings')]
+    private Collection $products;
+
     public function __construct()
     {
         $this->groupOfProducts = new ArrayCollection();
+        $this->products = new ArrayCollection();
     }
 
     public function getId(): ?int
@@ -118,4 +122,20 @@ class Selling
 
         return $this;
     }
+
+    public function addProduct(Product $product): static
+    {
+        if (!$this->products->contains($product)) {
+            $this->products->add($product);
+        }
+
+        return $this;
+    }
+
+    public function removeProduct(Product $product): static
+    {
+        $this->products->removeElement($product);
+
+        return $this;
+    }
 }