<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Technique extends Model
{
	use HasFactory;

	public function chapters() {
		return $this
			->belongsToMany(Technique::class, 'technique_chapter', 'parent_id', 'child_id')
			->withPivot('level', 'order')
			->orderByPivot('order')
			->using(TechniqueChapter::class);
	}

	protected $casts = [
		'index' => 'boolean',
	];
}