<?php

namespace App\Models\Train;

use Illuminate\Database\Eloquent\Model;
use App\Traits\HasDateTimeFormatter;
use EloquentFilter\Filterable;

/**
 * 培训管理-课件
 */
class Book extends Model
{
    use HasDateTimeFormatter, Filterable;

    protected $table = 'train_books';

    protected $fillable = ['category_id', 'title', 'cover_image', 'description', 'type', 'content', 'video', 'files'];
    
    protected $casts = [
        'type' => \App\Enums\BookType::class,
        'files' => 'json',
    ];

    public function modelFilter()
    {
        return \App\Admin\Filters\TrianBookFilter::class;
    }

    public function category()
    {
        return $this->belongsTo(\App\Models\Keyword::class, 'category_id', 'key');
    }
}