Menu Crud with Items

[pixelpatron90]

Hello, I'm contacting you with a difficult problem.

I have a MenuCrudController in which I can create menus. In parallel, I need an operation in the actions that displays all the items in the respective menu in a new table.

I've already tried creating an operation, but it only worked moderately well.

What exactly would be the correct approach?

[backpack-ai-bot[bot]]

I understand you're trying to create a menu system with Backpack where you can view all items belonging to a specific menu. This is a common pattern in admin panels.

Based on the knowledge sources, there are a few approaches you could take:

Option 1: Create a Custom Operation

You can create a custom operation in your MenuCrudController that displays the menu items for a specific menu. This would involve:

1. Adding a custom operation trait to your MenuCrudController
2. Setting up routes for this operation
3. Creating a method to display the items

Here's how you might approach this:

<?php

namespace App\Http\Controllers\Admin;

use Backpack\CRUD\app\Http\Controllers\CrudController;

class MenuCrudController 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;
    
    // Your custom operation for viewing menu items
    use \App\Http\Controllers\Admin\Operations\ViewMenuItemsOperation;
    
    // Rest of your controller code...
}

Option 2: Use MenuCRUD Package

Backpack actually has a MenuCRUD package that might help with what you're trying to accomplish. This package allows you to "Add, edit, reorder, nest, rename menu items and link them to Backpack\PageManager pages, external link or custom internal link." MenuCrud

Option 3: Custom Route and Method

Another approach is to add a custom route and method to your controller:

// In routes/backpack/custom.php
Route::crud('menu', 'MenuCrudController');
Route::get('menu/{id}/items', 'MenuCrudController@items');

// In your MenuCrudController
public function items($id)
{
    // Set up the CRUD panel for menu items
    $this->setupListOperation();
    $this->crud->addClause('where', 'menu_id', $id);
    
    // Return a view with the items
    return view('your-view-for-items', [
        'crud' => $this->crud,
        'menu' => Menu::find($id)
    ]);
}

This is similar to the approach shown in the community forum where someone was trying to show only draft items with a custom route Help Needed with Controller and Route Setup.

For the best implementation, I'd recommend creating a proper custom operation as it will integrate better with Backpack's architecture. The documentation doesn't provide a complete example of this specific use case, but it does explain how operations work in general.

Would you like more specific guidance on implementing any of these approaches?

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Relevant sources:

4. Add-ons, License, and Support|Support Part 2
Show Operation|Show Operation
Github Issue (closed): Way to use table field for separate table in DB?
Github Issue (open): [Proposal] Prefix for route names
Operations|Standard Operations
Github Issue (closed): [Feature][3.4] Set initial CrudPanel properties on CrudController
Getting Started Videos|5. CRUDs - Intro to Operations
2. CRUD Operations|2. CRUD Operations
Github Issue (closed): select2_from_ajax not working
Install Optional Packages|MenuCrud
Help Needed with Controller and Route Setup
List Operation|How to Use

[pixelpatron90]

It would be nice if I could also display the items in each menu in a table. I've already added an operation for this, but it gives me this error:

Trying to access array offset on null

[karandatwani92]

Hey @pixelpatron90

In the screenshot, I see that each menu has subitems. What kind of items are these? Are these relationship models?

• If these items have their own CRUD, you can choose to create a wrapper around relationship_count and set the URL to redirect to that crud with the filter parameter.
  • In case you want the URL to be an action button, You can build the same using the quick button.
• Or, you can create details row if you want to see them on the same page.