I’ve built a nested comment system and it works fine, but I have a problem. when I want to show the comments, it runs too many queries. for example if I have 10 comments and two replies each, laravel debugger shows 40+ queries, and I want to reduce them, here is my code :
Query
JavaScript
x
$comments = $post->mentions()->with(['author', 'reply'])->get();
Relationship in Post.php Model
JavaScript
public function mentions()
{
return $this->hasMany(Comment::class, 'post_id')->where('approved',1)->where('parent_id',0);
}
Comments Relationships
JavaScript
public function author()
{
return $this->belongsTo(User::class, 'author_id')->select('id', 'name', 'avatar', 'role');
}
public function reply()
{
return $this->hasMany(Comment::class, 'parent_id')->where('approved', 1);
}
Blade File
JavaScript
@foreach ($comments as $comment)
<div x-data="{reply:false}" class="break-words bg-white border-2 rounded-lg p-4 my-5" id="answer-{1}">
<div wire:ignore class="flex justify-between items-center">
<div class="flex items-center">
<img class="rounded-full w-20 border-4 @if ($comment->author->role == 'administrator') border-blue-500 @else border-gray-500 @endif " src="{{ $comment->author->avatar }}"
alt="{{ $comment->author->name }}">
<div>
<div class="flex pr-3">
<a href="/@username"
class="font-bold text-lg text-gray-800 hover:text-gray-900">{{ $comment->author->name }}</a>
@if ($comment->author->role == 'administrator')
<img class="w-5 mr-1" src="/img/verified.svg" alt="" title="admin">
@endif
</div>
<p class="font-light cursor-default text-gray-700 pt-1 pr-3">
{{ $comment->created_at->diffForHumans() }}</p>
</div>
</div>
<svg @click="reply = true" xmlns="http://www.w3.org/2000/svg" class="h-6 cursor-pointer hover:text-rose-600"
fill="none" viewBox="0 0 24 24" stroke="currentColor">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2"
d="M3 10h10a8 8 0 018 8v2M3 10l6 6m-6-6l6-6" />
</svg>
</div>
<div class="comment_body leading-8 pt-3 text-gray-800 cursor-default">
<div wire:ignore>
{!! nl2br($comment->body) !!}
</div>
<div x-cloak x-show="reply">
<form class="py-3" wire:submit.prevent="SubmitComment({{ $comment->id }})">
<textarea wire:model.defer="commentBody"
class="w-full focus:ring-0 bg-zinc-200 border shadow focus:bg-zinc-100 mt-3 p-4 rounded-lg"
id="editor" rows="6" placeholder=""></textarea>
@error('commentBody') <p class="text-red-600 mt-1 text-sm">{{ $message }}</p>
@enderror
<div class="flex mt-3">
<div @click="reply = false"
class="bg-red-600 rounded-lg ml-3 text-white px-3 py-2 cursor-pointer">
Cancel
</div>
<button wire:loading.remove wire:target="SubmitComment" type="submit"
class="inline-block bg-gray-800 hover:bg-gray-900 transition duration-300 px-3 py-2 text-white rounded-md">
Send
</button>
<button wire:loading="" wire:target="SubmitComment" type="button"
class="flex bg-gray-800 hover:bg-gray-900 transition duration-300 px-3 py-2 text-white rounded-md"
disabled>
<span class="flex justify-center">
<svg class="animate-spin w-6 h-6" xmlns="http://www.w3.org/2000/svg" fill="none"
viewBox="0 0 24 24">
<circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor"
stroke-width="4"></circle>
<path class="opacity-75" fill="currentColor"
d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z">
</path>
</svg>
</span>
</button>
</div>
</form>
</div>
<div class="my-3">
@include('partials.comment',['comments'=>$comment->reply])
</div>
</div>
</div>
@endforeach
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Answer
You can use dot seperator to get the nested relationship
JavaScript
$comments = $post->with(['mentions.author','mentions.reply'])
->first()
->mentions;