<?php

namespace Modules\Essentials\Entities;

use Illuminate\Database\Eloquent\Model;

class KnowledgeBase extends Model
{
    /**
     * The attributes that aren't mass assignable.
     *
     * @var array
     */
    protected $guarded = ['id'];

    /**
     * The table associated with the model.
     *
     * @var string
     */
    protected $table = 'essentials_kb';

    /**
     * Get all the children of the knowledge base.
     */
    public function children()
    {
        return $this->hasMany(\Modules\Essentials\Entities\KnowledgeBase::class, 'parent_id');
    }

    public function users()
    {
        return $this->belongsToMany(\App\User::class, 'essentials_kb_users', 'kb_id', 'user_id');
    }
}