laravel使用withCount获取列表下关联模型的数量

模型里面

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Post extends Model{    //

   protected $table = "posts";   public $primaryKey = ‘id‘;

   public function user()   {      return $this->belongsTo("App\Models\User","user_id",‘id‘);   }

   public function comments()   {      return $this->hasMany(‘App\Models\Comment‘,‘post_id‘,‘id‘)->orderBy("created_at",‘desc‘);   }}

控制器查询列表$posts = Post::withCount("comments")->orderBy("created_at",‘desc‘)->paginate(6);

视图里面使用

{{ $post->comments_count }}

原文地址：https://www.cnblogs.com/php-linux/p/11689469.html