community-service/app/Models/PostMusicCategoryRel.php

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2019-07-04
 * Time: 9:47
 */

namespace App\Models;


use Illuminate\Database\Eloquent\Model;

class PostMusicCategoryRel extends Model {
    protected $table = 'post_music_category_rel';
    protected $guarded = [];

    //音乐
    public function post_music()
    {
        return $this->hasOne('App\Models\PostMusic', 'id', 'mid');
    }
    //音乐分类
    public function post_music_category()
    {
        return $this->hasOne('App\Models\PostMusicCategory', 'id', 'music_category_id');
    }
}