Laravel. How to attach user to comments?

Question

Laravel

there are 3 tables

posts
       id,name
comments
       id, post_id, user_id
user
       id,name,image

This is how I get the Post This is how I get all the comments
$post = Post::where("alias", $alias)->first();
$comments = $post->comments;

public function comments()
    {
        return $this->hasMany('App\Post', 'post_id');
    }

You need to select all the comments of the post and attach usera to each comment to get their photos and names.
How to make the right choice.

Answer 1

Relationships - https://laravel.ru/docs/v5/eloquent-relationships
From comments to user - hasOne and with()