up schema with relations between objects

src/Entity/Category.php

@@ -16,6 +16,9 @@ class Category
     #[ORM\Column(length: 255)]
     private ?string $name = null;
 
+    #[ORM\ManyToOne(inversedBy: 'categories')]
+    private ?User $user = null;
+
     public function getId(): ?int
     {
         return $this->id;
@@ -32,4 +35,16 @@ class Category
 
         return $this;
     }
+
+    public function getUser(): ?User
+    {
+        return $this->user;
+    }
+
+    public function setUser(?User $user): static
+    {
+        $this->user = $user;
+
+        return $this;
+    }
 }