webapp/app/User.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class User extends Model
{

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

    protected $fillable = ["email"];
    
	public static $rules = [
		"email" => "required",
	];
}