technician/api/js/model/PortalCategoryModel.php

<?php
    /**
     * Created by PhpStorm.
     * User: Administrator
     * Date: 2020-09-18
     * Time: 11:28
     */
    
    namespace api\js\model;
    
    
    use think\Model;

    class PortalCategoryModel extends Model
    {
        public function portal()
        {
            
            return $this->belongsToMany('PortalPostModel','portal_category_post','post_id','category_id')->alias('a')->order('a.id','desc')->field('a.id,a.post_title,post_excerpt,update_time');
        }
        public function getlist($id=1)
        {
            $list = $this::get($id,['portal'=>function($query){$query->where(['delete_time'=>0,'post_status'=>1]);}]);
            return $list->portal;
        }
    }