<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Rule extends Model
{
    protected $fillable = [
        'kode',
        'gejala_id',
        'penyakit_id',
        'mb',
        'md'
    ];

    public function gejala()
    {
        return $this->belongsTo(Gejala::class);
    }

    public function penyakit()
    {
        return $this->belongsTo(Penyakit::class);
    }

    // Hitung Nilai CF
    public function getCfAttribute()
    {
        return $this->mb - $this->md;
    }
}