Pony.fm/app/Genre.php
2015-11-24 02:49:47 -08:00

65 lines
1.9 KiB
PHP

<?php
/**
* Pony.fm - A community for pony fan music.
* Copyright (C) 2015 Peter Deltchev
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
namespace Poniverse\Ponyfm;
use DB;
use Illuminate\Database\Eloquent\Relations\Relation;
use Poniverse\Ponyfm\Traits\SlugTrait;
use Illuminate\Database\Eloquent\Model;
class Genre extends Model
{
protected $table = 'genres';
protected $fillable = ['name', 'slug'];
protected $appends = ['track_count'];
protected $hidden = ['trackCountRelation'];
public $timestamps = false;
use SlugTrait;
public function tracks(){
return $this->hasMany(Track::class, 'genre_id');
}
/**
* "Dummy" relation to facilitate eager-loading of a genre's track count.
* This relationship should not be used directly.
*
* Inspired by: http://laravel.io/forum/05-03-2014-eloquent-get-count-relation?page=1#reply-6226
*
* @return Relation
*/
public function trackCountRelation() {
return $this->hasOne(Track::class)
->select(['genre_id', DB::raw('count(*) as track_count')])
->groupBy('genre_id');
}
/**
* Returns the number of tracks in this genre.
*
* @return int
*/
public function getTrackCountAttribute() {
return $this->trackCountRelation()->count();
}
}