KTV/app/Models/Song.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use App\Helpers\ChineseNameConverter;

class Song extends Model
{
    /** @use HasFactory<\Database\Factories\SongFactory> */
    use HasFactory;

    protected $fillable = [
        'name',
        'adddate',
        'filename',
        'language_type',
        'db_change',
        'vocal',
        'situation',
        'copyright01',
        'copyright02',
        'note01',
        'note02',
        'note03',
        'note04',
        'enable',
        'unnamed_21',
        'simplified',
        'phonetic_abbr',
        'pinyin_abbr',
    ];
    
    public function users(){
        return $this->belongsToMany(User::class, 'user_song')->withTimestamps();
    }

    public function str_artists(){
        return $this->artists->pluck('name')->implode(', ');
    }
    public function artists(){
        return $this->belongsToMany(Artist::class);
    }
    public function str_categories(){
        return $this->categories->pluck('name')->implode(', ');
    }
    public function categories(){
        return $this->belongsToMany(SongCategory::class);
    }

    public function language(){
        return $this->belongsTo(SongLanguage::class, 'language_type', 'id');
    }
    protected static function booted()
    {
        // 無論是 creating 或 updating，都執行這段共用的邏輯
        static::saving(function ($song) {
            $simplified=ChineseNameConverter::convertToSimplified($song->name);// 繁體轉簡體
            $song->simplified =  $simplified;
            $song->phonetic_abbr = ChineseNameConverter::getKTVZhuyinAbbr($simplified);// 注音符號
            $song->pinyin_abbr=ChineseNameConverter::getKTVPinyinAbbr($simplified);// 拼音首字母
        });
    }
}