wxgzh/app/Models/DiaryMood.php

<?php

namespace App\Models;

class DiaryMood extends SoftBaseModel
{
    protected $casts = ['tag'=>'array'];
    protected $appends = ['tags'];
    
    public function level(){
        return $this->belongsTo(DiaryMoodLevel::class, 'level_id', 'id');
    }
    
    public function getTagsAttribute()
    {
        $tagArr = json_decode($this->attributes['tag'], TRUE);
        return $tagArr ? DiaryMoodTag::whereIn('id', $tagArr)->orderByRaw('`rank` desc, `id` desc')->get(['id','name','color']) : [];
    }
}