add like in entity Post

src/Entity/Post.php

@@ -84,9 +84,16 @@ class Post
     #[ORM\OneToMany(targetEntity: Comment::class, mappedBy: 'related_post', fetch: 'EXTRA_LAZY')]
     private Collection $comments;
 
+    /**
+     * @var Collection<int, User>
+     */
+    #[ORM\ManyToMany(targetEntity: User::class, inversedBy: 'liked_post')]
+    private Collection $likes;
+
     public function __construct()
     {
         $this->comments = new ArrayCollection();
+        $this->likes = new ArrayCollection();
     }
 
     public function getId(): ?int
@@ -256,4 +263,28 @@ class Post
 
         return $this;
     }
+
+    /**
+     * @return Collection<int, User>
+     */
+    public function getLikes(): Collection
+    {
+        return $this->likes;
+    }
+
+    public function addLike(User $user): static
+    {
+        if (!$this->likes->contains($user)) {
+            $this->likes->add($user);
+        }
+
+        return $this;
+    }
+
+    public function removeLike(User $user): static
+    {
+        $this->likes->removeElement($user);
+
+        return $this;
+    }
 }

src/Entity/User.php

@@ -68,9 +68,16 @@ class User implements UserInterface, PasswordAuthenticatedUserInterface
     #[ORM\OneToMany(targetEntity: Comment::class, mappedBy: 'author')]
     private Collection $comments;
 
+    /**
+     * @var Collection<int, Post>
+     */
+    #[ORM\ManyToMany(targetEntity: Post::class, mappedBy: 'likes')]
+    private Collection $liked_post;
+
     public function __construct()
     {
         $this->comments = new ArrayCollection();
+        $this->liked_post = new ArrayCollection();
     }
 
     public function getId(): ?int
@@ -189,4 +196,31 @@ class User implements UserInterface, PasswordAuthenticatedUserInterface
 
         return $this;
     }
+
+    /**
+     * @return Collection<int, Post>
+     */
+    public function getLikedPost(): Collection
+    {
+        return $this->liked_post;
+    }
+
+    public function addLikedPost(Post $likedPost): static
+    {
+        if (!$this->liked_post->contains($likedPost)) {
+            $this->liked_post->add($likedPost);
+            $likedPost->addLike($this);
+        }
+
+        return $this;
+    }
+
+    public function removeLikedPost(Post $likedPost): static
+    {
+        if ($this->liked_post->removeElement($likedPost)) {
+            $likedPost->removeLike($this);
+        }
+
+        return $this;
+    }
 }