laravel polymorphic model

1<?php
2
3namespace App;
4
5use Illuminate\Database\Eloquent\Model;
6
7class Image extends Model
8{
9    /**
10     * Get the owning imageable model.
11     */
12    public function imageable()
13    {
14        return $this->morphTo();
15    }
16}
17
18class Post extends Model
19{
20    /**
21     * Get the post's image.
22     */
23    public function image()
24    {
25        return $this->morphOne('App\Image', 'imageable');
26    }
27}
28
29class User extends Model
30{
31    /**
32     * Get the user's image.
33     */
34    public function image()
35    {
36        return $this->morphOne('App\Image', 'imageable');
37    }
38}