cms-service/app/Models/TopicGroup.php

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2019/6/19
 * Time: 14:34
 */
namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class TopicGroup extends Model
{
    //
    use SoftDeletes;
    protected $table = 'topic_group';
    protected $guarded = [];

    public function info()
    {
        return $this->hasMany('App\Models\TopicGroupInfo', 'id', 'topic_group_id');
    }
}