backend/app/models/Question.php

<?php
namespace app\models;

use \Illuminate\Database\Eloquent\Model;

/**
 * @method static where(string $string, $user_id)
 */
class Question extends Model {
    protected $table = 'question';
    protected $fillable = ['question','user_id'];

    public function answers()
    {
        return $this->hasMany('\Models\Answer');
    }

    public function user()
    {
        return $this->belongsTo('\Models\User');
    }
}