ldc-gen-game-web/app/Models/FaqQuestions.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class FaqQuestions extends Model
{

    protected $table = "faq_questions";

    protected $fillable = ["question", "answer", "positive_vote", "negative_vote", "theme_id"];

    public function theme()
    {
        return $this->belongsTo('App\Models\FaqThemes', 'theme_id');
    }

    public function getUtilityAttribute()
    {
        $pourcent = 0;

        if ($this->positive_vote !== null && $this->negative_vote !== null && $this->positive_vote >= $this->negative_vote && $this->positive_vote > 0 && $this->negative_vote > 0) {
            $ratio    = $this->negative_vote / $this->positive_vote;
            $pourcent = ceil((1 - $ratio) * 100);
        }

        return $pourcent;
    }
}