Backpack 4.1 morphOne relation

App\Http\Controllers\UserCrudController

<?php

namespace App\Http\Controllers;

use Backpack\CRUD\app\Http\Controllers\CrudController;
use Backpack\CRUD\app\Library\CrudPanel\CrudPanelFacade as CRUD;

class UserCrudController extends CrudController
{
    use \Backpack\CRUD\app\Http\Controllers\Operations\ListOperation;
    use \Backpack\CRUD\app\Http\Controllers\Operations\CreateOperation { store as traitStore; } //IMPORTANT HERE
    use \Backpack\CRUD\app\Http\Controllers\Operations\UpdateOperation { update as traitUpdate; } //IMPORTANT HERE
    use \Backpack\CRUD\app\Http\Controllers\Operations\DeleteOperation;
    use \Backpack\CRUD\app\Http\Controllers\Operations\ShowOperation;

    public function setup()
    {
        CRUD::setModel(\App\Models\User::class);
        CRUD::setRoute(config('backpack.base.route_prefix') . '/user');
        CRUD::setEntityNameStrings('user', 'users');
    }

    protected function setupListOperation()
    {
        CRUD::column('name');
    }

    protected function setupCreateOperation()
    {
        CRUD::field('name');
        
        CRUD::field('video_field')
              ->type('repeatable')
              ->fields([
                [
                    'name' => 'url',
                    'type' => 'text',
                ],
                [
                    'name' => 'description',
                    'type' => 'text'
                ]])
             ->max_rows(1)
             ->min_rows(1)
        ]);      
    }

    protected function setupUpdateOperation()
    {
        $this->setupCreateOperation();
    }

    protected function setupShowOperation()
    {
        CRUD::column('name');
    }

    public function store()
    {
        $video = json_decode(request('video_field'), true)[0];

        $response = $this->traitStore();

        $this->crud->entry->video()->create($video);

        return $response;
    };

    public function update()
    {
        $video = json_decode(request('video_field'), true)[0];

        $response = $this->traitUpdate();

        $this->crud->entry->video()->update($video);

        return $response;
    }

App\Models\Image

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Video extends Model
{
    use \Backpack\CRUD\app\Models\Traits\CrudTrait;
    
    protected $fillable = ['url', 'description'];

    /**
     * Get the parent videoable model (user or post).
     */
    public function videoable()
    {
        return $this->morphTo();
    }
}

App\Models\Post

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Post extends Model
{
    use \Backpack\CRUD\app\Models\Traits\CrudTrait;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'title',
    ];

    /**
     * The attributes that should be cast to native types.
     *
     * @var array
     */
    protected $casts = [
        'id' => 'integer',
    ];

    public function video()
    {
        return $this->morphOne(\App\Models\Video::class, 'videoable');
    }
    
    //acessor to get the video populated in the repeatable field again
    public function getVideoFieldAttribute() {
        return json_encode([['url' => $this->video->url, 'description' => $this->video->description]]);
    }
}

App\Models\User

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class User extends Model
{
    use \Backpack\CRUD\app\Models\Traits\CrudTrait;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name',
    ];

    /**
     * The attributes that should be cast to native types.
     *
     * @var array
     */
    protected $casts = [
        'id' => 'integer',
    ];

    public function video()
    {
        return $this->morphOne(\App\Models\Video::class, 'videoable');
    }
    
    //acessor to get the video populated in the repeatable field again
    public function getVideoFieldAttribute() {
        return json_encode([['url' => $this->video->url, 'description' => $this->video->description]]);
    }
}

Same here - could you please add the .php extension to the filenames? 🙏