Messages.php

<?php namespace App;
use Illuminate\Database\Eloquent\Model;
class Messages extends Model {
    protected $fillable = [
        "id",
        "user_id",
        "description",
        "created_at",
        "updated_at"
    ];
    public static $rules = [
        "user_id" => "required|numeric|exists:users,id",
        "description" => "required|max:255",
    ];
    public function user()
    {
        return $this->belongsTo("App\Users");
    }
}