How to link comments to each post by id with Laravel Blade - php

Question

I have created a Post and Comment application. I am trying to link the comments to the id of the post. I am trying to use PHP in a Blade template to do this. I get the error that the variable post_id does not exist. I want to use the #if and #foreach of Blade. The problem seems to be in the #if statement.
Here is my HTML:
<div class="col-md-9">
<div class="row">
#foreach($posts as $post)
<div class="col-md-12 post" id="post{{ $post->id }}">
<div class="row">
<div class="col-md-12">
<h4>
{{ $post->title }}
</h4>
</div>
</div>
<div class="row">
<div class="col-md-12 post-header-line">
<span class="glyphicon glyphicon-user"></span> by {{ $post->user->firstName }} {{ $post->user->lastName }} | <span class="glyphicon glyphicon-calendar">
</span> {{ $post->created_at }} | <span class="glyphicon glyphicon-comment"></span><a href="#">
3 Comments</a>
</div>
</div>
<div class="row post-content">
<div class="col-md-2">
<a href="#">
<img src="/images/random/postimg.jpg" alt="" class="img-responsive postImg">
</a>
</div>
<div class="col-md-10">
<p>
{{ $post->post }}
</p>
</div>
</div>
<div class="row add-comment">
<div class="form-group">
<input type="text" name="addComment" placeholder="Add your comment" class="form-control" v-model="comment">
</div>
<input id="addComment" type="submit" name="submitComment" value="Submit Comment" class="btn btn-default" v-on:click="submitComment" data-id="{{ $post->id }}">
</div>
#if($post->comment->post_id == $post->id)
#foreach($post->comment as $comment)
<div class="row">
<div class="col-md-12 mb-r">
<div class="card example-1 scrollbar-ripe-malinka">
<div class="card-body">
<h4 id="section1"><strong>By: {{ $comment->user->firstName }} {{ $comment->user->lastName }}</strong></h4>
<p>{{ $comment->comment }}</p>
</div>
</div>
</div>
</div>
#endforeach
#endif
</div>
#endforeach
</div>
</div>
Here is my PostController:
public function index(){
$posts = Post::with('comment', 'user')->orderBy('id', 'desc')->limit(20)->get();
return view('post.posts')->with('posts', $posts);
}

Answer 1

You don't need #if statement, remove it. $post->comment is a collection, that 's why your are not getting post_id. if you want to check, then check inside foreach.
#foreach($post->comment as $comment)
<div class="row">
<div class="col-md-12 mb-r">
<div class="card example-1 scrollbar-ripe-malinka">
<div class="card-body">
<h4 id="section1"><strong>By: {{ $comment->user->firstName }} {{ $comment->user->lastName }}</strong></h4>
<p>{{ $comment->comment }}</p>
</div>
</div>
</div>
</div>
#endforeach

Answer 2

You need to add post_id to the comments table and use the relationship:
public function comments()
{
return $this->hasMany(Comment::class);
}
Then you'll be able to load related comments:
Post::with('comments', ....
And iterate over posts and their comments:
#foreach ($posts as $post)
#foreach ($post->comments as $comment)
{{ $comment->content }}
#endforeach
#endforeach

Answer 3

I think if you create relationship between Post model and Comment model (post table and comments table), your #if is useless. I recommend you to check your corresponding models.
Your code should be like this,
Post.php
public function comments(){
return $this->morphMany('App\Comments','commentable');
}
Comment.php
public function commentable(){
return $this->morphTo();
}
in my app Comment model is shared by some other models also.
Eg :- User’s Questions also have comments.
Find more details in laravel:Eloquent page