<?php

namespace App\Models;

use App\Models\Traits\BelongsToCategory;
use App\Models\Traits\HasOneCover;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;

class Article extends Model
{

    use HasOneCover;

    /**
     * 应进行类型转换的属性
     * @var array
     */
    protected $casts = [
        'subjoin' => 'array',
    ];

    public function getLinkAttribute()
    {
        return route('article.show', $this);
    }

    /**
     * Notes: 关联分类
     * @Author: 玄尘
     * @Date  : 2021/4/2 9:11
     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
     */
    public function categories(): BelongsToMany
    {
        return $this->belongsToMany(Category::class)
                    ->using(ArticleCategory::class);
    }

    /**
     * Notes: description
     * @Author: 玄尘
     * @Date  : 2021/4/2 9:17
     * @param $query
     * @param $ids
     * @return mixed
     */
    public function scopeByCategory($query, $ids)
    {
        if (!is_array($ids)) {
            $ids = [$ids];
        }

        return $query->whereHas('categories', function ($q) use ($ids) {
            $q->whereIN('id', $ids);
        });
    }

}