Send user id and post id with comment - php

Question

I am following a laravel tutorial and created a form to create a comment on a post with the user_id. I can't seem to understand how I pass the user_id.
Post Model
class Post extends Model
{
protected $guarded = [];
public function comments()
{
return $this->hasMany(Comment::class);
}
public function addComment($body)
{
$this->comments()->create(compact('body'));
}
public function user()
{
return $this->belongsTo(User::class);
}
}
CommentModel
class Comment extends Model
{
protected $guarded = [];
public function post()
{
$this->belongsTo(Post::class);
}
public function user()
{
$this->belongsTo(User::class);
}
}
User Model
class User extends Authenticatable
{
use Notifiable;
/**
* The attributes that are mass assignable.
*
* #var array
*/
protected $fillable = [
'name', 'email', 'password',
];
/**
* The attributes that should be hidden for arrays.
*
* #var array
*/
protected $hidden = [
'password', 'remember_token',
];
public function posts()
{
return $this->hasMany(Post::class);
}
public function comments()
{
return $this->hasMany(Comment::class);
}
public function publish(Post $post)
{
$this->posts()->save($post);
}
}
CommentsController.php
class CommentsController extends Controller
{
public function store(Post $post)
{
$this->validate(request(), ['body' => 'required|min:2']);
$post->addComment(request('body'));
return back();
}
}
As you can see I call ->addComment in the Post Model to add the comment. It worked fine untill I added user_id to the Comments table. What is the best way to store the user id? I can't get it to work.

Answer 1

Update your addComment method :
public function addComment($body)
{
$user_id = Auth::user()->id;
$this->comments()->create(compact('body', 'user_id'));
}
PS : Assuming that the user is authenticated.
UPDATE
public function addComment($body)
{
$comment = new Comment;
$comment->fill(compact('body'));
$this->comments()->save($comment);
}
Create a new instance of the comment without savingit and you only need to save a comment in the post because a post already belongs to a user

Answer 2

There is no need to handle ids manually, let eloquent handle it for you:
$user = Auth::user(); // or $request->user()
$user->comments()->save(new Comment());
more information about saving eloquent models.