Undefined array key "disk" in setupListOperation for new CRUD entity

[schel4ok]

I have problems to make CRUD for slider.

I made migration create_sliders_table.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

return new class extends Migration
{
    /**
     * Run the migrations.
     */
    public function up(): void
    {
        Schema::create('sliders', function (Blueprint $table) {
            $table->id();
            $table->string('name'); //slider name
            $table->string('caption')->nullable();
            $table->string('description')->nullable();
            $table->string('alt_text'); //slider alt_text
            $table->string('image'); //to store the slides
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     */
    public function down(): void
    {
        Schema::dropIfExists('sliders');
    }
};

then I run php artisan backpack:crud slider

in my SliderCrudController I have following code

<?php

namespace App\Http\Controllers\Admin;

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

/**
 * Class SliderCrudController
 * @package App\Http\Controllers\Admin
 * @property-read \Backpack\CRUD\app\Library\CrudPanel\CrudPanel $crud
 */
class SliderCrudController extends CrudController
{
    use \Backpack\CRUD\app\Http\Controllers\Operations\ListOperation;
    use \Backpack\CRUD\app\Http\Controllers\Operations\CreateOperation;
    use \Backpack\CRUD\app\Http\Controllers\Operations\UpdateOperation;
    use \Backpack\CRUD\app\Http\Controllers\Operations\DeleteOperation;
    use \Backpack\CRUD\app\Http\Controllers\Operations\ShowOperation;

    /**
     * Configure the CrudPanel object. Apply settings to all operations.
     * 
     * @return void
     */
    public function setup()
    {
        CRUD::setModel(\App\Models\Slider::class);
        CRUD::setRoute(config('backpack.base.route_prefix') . '/slider');
        CRUD::setEntityNameStrings('slider', 'sliders');
    }

    /**
     * Define what happens when the List operation is loaded.
     * 
     * @see  https://backpackforlaravel.com/docs/crud-operation-list-entries
     * @return void
     */
    protected function setupListOperation()
    {
        /**
         * Columns can be defined using the fluent syntax:
         * - CRUD::column('price')->type('number');
         */

        CRUD::column('name')->type('text')->label('Название слайда');
        CRUD::column('caption')->type('text')->label('Заголовок в подписи слайда');
        CRUD::column('description')->type('text')->label('Описание в подписи слайда');
        CRUD::column('alt_text')->type('text')->label('Текст для SEO');
        CRUD::column('image')->type('upload')->label('Изображение');

    }

    /**
     * Define what happens when the Create operation is loaded.
     * 
     * @see https://backpackforlaravel.com/docs/crud-operation-create
     * @return void
     */
    protected function setupCreateOperation()
    {
        CRUD::setValidation(SliderRequest::class);
        /**
         * Fields can be defined using the fluent syntax:
         * - CRUD::field('price')->type('number');
         */
        CRUD::field('name')->type('text')->label('Название слайда');
        CRUD::field('caption')->type('text')->label('Заголовок в подписи слайда');
        CRUD::field('description')->type('text')->label('Описание в подписи слайда');
        CRUD::field('alt_text')->type('text')->label('Текст для SEO');
        CRUD::field('image')->type('upload')->label('Изображение')->withFiles();

    }

    /**
     * Define what happens when the Update operation is loaded.
     * 
     * @see https://backpackforlaravel.com/docs/crud-operation-update
     * @return void
     */
    protected function setupUpdateOperation()
    {
        $this->setupCreateOperation();
    }
}

when I go to https://myproject.dev/admin/slider page I have error Undefined array key "disk"

# ErrorException - Internal Server Error
Undefined array key "disk"

PHP 8.4.13
Laravel 12.34.0
myproject.dev

## Stack Trace

0 - vendor\backpack\crud\src\resources\views\crud\columns\upload.blade.php:1
1 - vendor\laravel\framework\src\Illuminate\Filesystem\Filesystem.php:123
2 - vendor\laravel\framework\src\Illuminate\Filesystem\Filesystem.php:124
3 - vendor\laravel\framework\src\Illuminate\View\Engines\PhpEngine.php:57
4 - vendor\laravel\framework\src\Illuminate\View\Engines\CompilerEngine.php:76
5 - vendor\laravel\framework\src\Illuminate\View\View.php:208
6 - vendor\laravel\framework\src\Illuminate\View\View.php:191
7 - vendor\laravel\framework\src\Illuminate\View\View.php:160
8 - vendor\backpack\crud\src\app\Library\CrudPanel\Traits\Search.php:382
9 - vendor\backpack\crud\src\app\Library\CrudPanel\Traits\Search.php:309
10 - vendor\backpack\crud\src\app\Library\CrudPanel\Traits\Search.php:263
11 - vendor\backpack\crud\src\app\Library\CrudPanel\Traits\Search.php:399
12 - vendor\backpack\crud\src\app\Http\Controllers\Operations\ListOperation.php:120
13 - vendor\laravel\framework\src\Illuminate\Routing\Controller.php:54
14 - vendor\laravel\framework\src\Illuminate\Routing\ControllerDispatcher.php:43
15 - vendor\laravel\framework\src\Illuminate\Routing\Route.php:265
16 - vendor\laravel\framework\src\Illuminate\Routing\Route.php:211
17 - vendor\laravel\framework\src\Illuminate\Routing\Router.php:822
18 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:180
19 - vendor\backpack\crud\src\app\Http\Controllers\CrudController.php:47
20 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:201
21 - vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\TransformsRequest.php:21
22 - vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\ConvertEmptyStringsToNull.php:31
23 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
24 - app\Http\Middleware\CheckIfAdmin.php:66
25 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
26 - vendor\laravel\framework\src\Illuminate\Routing\Middleware\SubstituteBindings.php:50
27 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
28 - vendor\backpack\crud\src\app\Http\Middleware\AuthenticateSession.php:62
29 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
30 - vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\VerifyCsrfToken.php:87
31 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
32 - vendor\laravel\framework\src\Illuminate\View\Middleware\ShareErrorsFromSession.php:48
33 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
34 - vendor\laravel\framework\src\Illuminate\Session\Middleware\StartSession.php:120
35 - vendor\laravel\framework\src\Illuminate\Session\Middleware\StartSession.php:63
36 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
37 - vendor\laravel\framework\src\Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse.php:36
38 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
39 - vendor\laravel\framework\src\Illuminate\Cookie\Middleware\EncryptCookies.php:74
40 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
41 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:137
42 - vendor\laravel\framework\src\Illuminate\Routing\Router.php:821
43 - vendor\laravel\framework\src\Illuminate\Routing\Router.php:800
44 - vendor\laravel\framework\src\Illuminate\Routing\Router.php:764
45 - vendor\laravel\framework\src\Illuminate\Routing\Router.php:753
46 - vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.php:200
47 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:180
48 - vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\TransformsRequest.php:21
49 - vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\ConvertEmptyStringsToNull.php:31
50 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
51 - vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\TransformsRequest.php:21
52 - vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\TrimStrings.php:51
53 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
54 - vendor\laravel\framework\src\Illuminate\Http\Middleware\ValidatePostSize.php:27
55 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
56 - vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\PreventRequestsDuringMaintenance.php:109
57 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
58 - vendor\laravel\framework\src\Illuminate\Http\Middleware\HandleCors.php:48
59 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
60 - vendor\laravel\framework\src\Illuminate\Http\Middleware\TrustProxies.php:58
61 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
62 - vendor\laravel\framework\src\Illuminate\Foundation\Http\Middleware\InvokeDeferredCallbacks.php:22
63 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
64 - vendor\laravel\framework\src\Illuminate\Http\Middleware\ValidatePathEncoding.php:26
65 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:219
66 - vendor\laravel\framework\src\Illuminate\Pipeline\Pipeline.php:137
67 - vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.php:175
68 - vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.php:144
69 - vendor\laravel\framework\src\Illuminate\Foundation\Application.php:1220
70 - public\index.php:20

## Request

POST /admin/slider/search

## Headers

* **cookie**: XSRF-TOKEN=eyJpdiI6Ikpham1pZVI5RlNrQjRTNDlWQ2luZFE9PSIsInZhbHVlIjoiSlpHY3gyRTJFc3RVQndMWDE5d1FMc09xQy93VVllWXFvV1Z2YmRYRlR5VUQyQlZMb2huZWtmN1pUNVdBejgvZnJFOW9MSDlkbzZYWExuMHcrdHUyV0kvV0J6aHpySkZkc3NJbmlBMXRhZkc2R3RraFVlanJUZjVGbnhYKzczUGwiLCJtYWMiOiIyZTgxZDdiMTExNGVjMzBhZDBjNmQ5MTg1OGQxN2Y0NWQwYzI5YjgyMzkzZjMzMjViYmM0YTBmYWU4MzlkMzAwIiwidGFnIjoiIn0%3D; laravel-session=eyJpdiI6IllmZHNJQjVWL0lCZXhQVVVHSTN3OUE9PSIsInZhbHVlIjoiN2NuUkl1VUNBZk9yOFFIV0JYLzloRDVueTJYMWFwdUY5N3orMUVxSEhKZjdyWkkxMVU3bjZib09vV0VYMlVQSldWT2p4WVdxcUt1WDlXb0M3aG1RWFYvamFjSmF6NG9zQVRtU0FjUk9mSHN3L05jOGVteDZVK0g2Z1RMYXkvSWwiLCJtYWMiOiJmMTcwYmNlMjkyZmIyNjY2MjBiMDQxMWM1YTFlMDQzNDZmZTgwY2JiNGRkZjk3ODExNmUyYmViOWM5ODJkNGMyIiwidGFnIjoiIn0%3D
* **accept-language**: ru,en;q=0.9
* **accept-encoding**: gzip, deflate, br, zstd
* **referer**: https://myproject.dev/admin/slider
* **sec-fetch-dest**: empty
* **sec-fetch-mode**: cors
* **sec-fetch-site**: same-origin
* **origin**: https://myproject.dev
* **content-type**: application/x-www-form-urlencoded; charset=UTF-8
* **accept**: undefined
* **user-agent**: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36
* **x-requested-with**: XMLHttpRequest
* **sec-ch-ua-mobile**: ?0
* **sec-ch-ua**: "Google Chrome";v="141", "Not?A_Brand";v="8", "Chromium";v="141"
* **x-csrf-token**: hF4uSww4hYkIbvUZ3HEOSfOr50kgwWBbPnS5n108
* **sec-ch-ua-platform**: "Windows"
* **content-length**: 1327
* **connection**: keep-alive
* **host**: myproject.dev

## Route Context

controller: App\Http\Controllers\Admin\SliderCrudController@search
route name: slider.search
middleware: web, admin, Closure

## Route Parameters

No route parameter data available.

## Database Queries

* mariadb - select exists (select 1 from information_schema.tables where table_schema = schema() and table_name = 'settings' and table_type in ('BASE TABLE', 'SYSTEM VERSIONED')) as `exists` (1.53 ms)
* mariadb - select * from `settings` (0.23 ms)
* mariadb - select * from `sessions` where `id` = 'kMhBKzVQTXb85kXLR1azV4gPjQpBWwGpnNq20LRn' limit 1 (0.43 ms)
* mariadb - select * from `users` where `id` = 1 limit 1 (0.21 ms)
* mariadb - select column_name as `name`, data_type as `type_name`, column_type as `type`, collation_name as `collation`, is_nullable as `nullable`, column_default as `default`, column_comment as `comment`, generation_expression as `expression`, extra as `extra` from information_schema.columns where table_schema = schema() and table_name = 'sliders' order by ordinal_position asc (3.85 ms)
* mariadb - select * from `sliders` order by `id` desc limit 10 (0.27 ms)
* mariadb - select count(*) as total_rows from (select `sliders`.`id` from `sliders`) as `sliders_aggregator` (0.12 ms)

[backpack-ai-bot[bot]]

The error Undefined array key "disk" in your Backpack CRUD List operation is caused by the fact that the upload column type expects a disk attribute to be set, specifying which filesystem disk to use for displaying the image. This is required in the column definition, not just in the field definition for Create/Update.

Your current code for the List operation is:

CRUD::column('image')->type('upload')->label('Изображение');

To fix the error, you need to specify the disk attribute in the column definition, like so:

CRUD::column('image')
    ->type('upload')
    ->label('Изображение')
    ->disk('public'); // or whatever disk you use for uploads

This is a known requirement for Backpack's upload column, as seen in the related pull request that addresses the "Undefined index: disk" error in the upload column view.

Summary:
Add the disk attribute to your image column in setupListOperation() to resolve the error.

---

If you continue to have issues, double-check that your disk is correctly configured in config/filesystems.php and that the file is actually being uploaded to that disk.

ℹ️ Please note our AI Bot does not reply to follow-ups, this will be the only AI answer in this thread. If the AI helped you find the answer, please mark it as answered or write details below so it can learn. Then close the conversation. If not, please give more information for when a human reads this. ℹ️

Relevant sources:

Getting Started Videos|7. List Operation
Columns|Columns API
Github Issue (closed): Can't use InlineCreate - array_filter() expects parameter 1 to be array, null given
Github Issue (closed): It has become hard to debug the errors which fall under admin
Github Issue (closed): $entries variable not available
Github Issue (closed): Error Undefined array key 1 with model created by devtools
Github Issue (closed): [Bug] Typed property Backpack\CRUD\app\Library\Database\Table::$columns must not be accessed before initialization
Github Issue (closed): [Bug] crudpanel error while Generating crud with Backpack for Laravel
Github Issue (closed): [Bug] Update 5.0.15 to 5.0.16 (and after) - Impossible to save/create
2. CRUD Operations|List Operation
[Bug]
Field view upload.blade.php : Fix "Next ErrorException: Undefined index: disk"