Added files to books.

src/Entity/Book.php

@@ -3,6 +3,8 @@
 namespace App\Entity;
 
 use App\Repository\BookRepository;
+use Doctrine\Common\Collections\ArrayCollection;
+use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping as ORM;
 
 #[ORM\Entity(repositoryClass: BookRepository::class)]
@@ -37,6 +39,14 @@ class Book
     #[ORM\Column(type: 'string', length: 255, nullable: true)]
     private $subtitle;
 
+    #[ORM\OneToMany(mappedBy: 'book', targetEntity: File::class, orphanRemoval: true)]
+    private $files;
+
+    public function __construct()
+    {
+        $this->files = new ArrayCollection();
+    }
+
     public function getId(): ?int
     {
         return $this->id;
@@ -137,4 +147,34 @@ class Book
 
         return $this;
     }
+
+    /**
+     * @return Collection<int, File>
+     */
+    public function getFiles(): Collection
+    {
+        return $this->files;
+    }
+
+    public function addFile(File $file): self
+    {
+        if (!$this->files->contains($file)) {
+            $this->files[] = $file;
+            $file->setBook($this);
+        }
+
+        return $this;
+    }
+
+    public function removeFile(File $file): self
+    {
+        if ($this->files->removeElement($file)) {
+            // set the owning side to null (unless already changed)
+            if ($file->getBook() === $this) {
+                $file->setBook(null);
+            }
+        }
+
+        return $this;
+    }
 }