Question 407308 in Laravel Question posted in
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Laravel – Undefined variable $form on remote server

I created simple app and after deploying app on remote server i have issue with code.

But.. on my local machine this code works fine, i even pulled code again from git and installed again on my local machine and it’s working without any issues.

Error that i have after visiting app.com:

Undefined variable $form

web.php:

Route::view('/', 'home')
    ->middleware(['auth']);

View home.blade.php

...
    <div>
        <livewire:ListQrcode />
    </div>

Livewire component: ListQrcode.php

class ListQrCode extends Component
{
    public $qrCodes;
    public QrCode $selectedQrCode;
    public string $selectedTitle = '';
    public string $selectedDescription = '';
    public string $selectedCode = '';
    public bool $createQrcode = false;
    public bool $showDrawer2 = false;
    public CreateQrcode $form;

    public function render()
    {
        $this->qrCodes = QrCode::with('tags')->orderBy('created_at', 'desc')->get();
        return view('livewire.ListQrcode',
            ['qrCodes' => $this->qrCodes]
        );
    }
}

Livewire Form:

class CreateQrcode extends Form
{
    #[Validate('required', 'string', 'min:3')]
    public $code = '';

    #[Validate('required', 'string', 'max:255')]
    public $title = '';

... 
}

View that code throw error,

                <div class="flex justify-center min-h-[296px] p-8">
                    @if($form->code)
                        <div class="p-4 dark:bg-gray-600 rounded-lg">
                            {!! QrCode::size(200)->generate($form->code) !!}
                        </div>
                    @endif
                </div>

From some reason, PHP don’t see $form variable on remote machine, when i comment problematic variable in template, then i have issue with another variable that is undefined.

What i should check to resolve that problem? It’s seems that PHP have issues with visibility of variables somehow.

Local machine:

  • Windows 11
  • NGINX
  • PHP 8.3

Remote machine:

  • Ubuntu 23
  • NGINX
  • PHP 8.3
Tags:

2

Answers


  1. 0

    Run php artisan config:clear and php artisan view:clear on your remote server. Sometimes, cached views or configurations can cause issues.

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  2. 0

    You should pass the $form variable to the view from the render() method in your ListQrCode component.

    public function render()
{
    $this->qrCodes = QrCode::with('tags')->orderBy('created_at', 'desc')->get();
    return view('livewire.ListQrcode', [
        'qrCodes' => $this->qrCodes,
        'form' => $this->form
    ]);
}
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