Filament•4mo ago

Conditionally add and update relations

Currently I got this situation. A user can have only 1 shipping address and only 1 billing address. In Filament's admin panel's user form, admin can change user's info. However I want to set restrictions, so that admin cant give a user >1 address of type shipping, and cant give a user >1 address of type billing. That also implies that when the user already got 1 billing address, the admin can't change that user's shipping address to type=billing. How can something like that be done?

Solution:

Create a policy according to the laravel docs then handle the conditions in each method based on your apps authorization. Filament defaults to Laravel’s policies to handle model authorization. https://laravel.com/docs/11.x/authorization#creating-policies

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13 Replies

igorclauss•4mo ago

In most cases you can pass Closures or Callables to filament methods.

atabegruslanOP•4mo ago

Yes. But a more detailed answer please

LeandroFerreira•4mo ago

Please provide some code you are using

atabegruslanOP•4mo ago

Here:

class UserResource extends Resource
{
    protected static ?string $model = User::class;

    public static function form(Form $form): Form
    {
        return $form
            ->schema([
                Forms\Components\Section::make()->schema([
                    // ...
                ]),
                Forms\Components\Section::make()->schema([
                    Forms\Components\Repeater::make('addresses')
                        ->relationship()
                        ->schema([
                            // Todo: can only chose 1 of type shipping and 1 of type billing   <<--------*********
                            Forms\Components\TextInput::make('email'),
                            Forms\Components\TextInput::make('address_line_1'),
                            Forms\Components\TextInput::make('city'),
                            Forms\Components\TextInput::make('zip_code'),
                            Forms\Components\TextInput::make('state'),
                        ])
                        ->addable(false) // Todo: Can only add 1 shipping and 1 billing   <<--------*********
                        ->itemLabel(fn (array $state) => $state['type'])
                ])
            ]);
    }

class UserResource extends Resource
{
    protected static ?string $model = User::class;

    public static function form(Form $form): Form
    {
        return $form
            ->schema([
                Forms\Components\Section::make()->schema([
                    // ...
                ]),
                Forms\Components\Section::make()->schema([
                    Forms\Components\Repeater::make('addresses')
                        ->relationship()
                        ->schema([
                            // Todo: can only chose 1 of type shipping and 1 of type billing   <<--------*********
                            Forms\Components\TextInput::make('email'),
                            Forms\Components\TextInput::make('address_line_1'),
                            Forms\Components\TextInput::make('city'),
                            Forms\Components\TextInput::make('zip_code'),
                            Forms\Components\TextInput::make('state'),
                        ])
                        ->addable(false) // Todo: Can only add 1 shipping and 1 billing   <<--------*********
                        ->itemLabel(fn (array $state) => $state['type'])
                ])
            ]);
    }

(Updated. Sorry about the screenshot earlier. I replaced that image attachment with text code now)

toeknee•4mo ago

Please read #✅┊rules on how to provide code.

atabegruslanOP•4mo ago

Sorry I am out and I only have my phone

awcodes•4mo ago

This would normally be handled by a laravel policy. Filament is still just laravel under the hood.

atabegruslanOP•4mo ago

How exactly do you do that? Something more specific please

Solution

awcodes•4mo ago

Laravel - The PHP Framework For Web Artisans

Laravel is a PHP web application framework with expressive, elegant syntax. We’ve already laid the foundation — freeing you to create without sweating the small things.

atabegruslanOP•4mo ago

Thank you

atabegruslanOP•4mo ago

Actually, policy is only half the answer. Normally, you create a policy, then you apply it in controller method, like $this->authorize('action', $modelInstance); But Filament have its own controllers. It doesnt go thru any of the controllers that I wrote. Hence in this situation, how can policy (or any type of pre-saving checks) be done upon the click of the add/delete/edit buttons?

atabegruslanOP•4mo ago

Zen Nitiruj•4mo ago

You can add ->authorize() in your action component. In this case, you are using Repeater you can customize addAction by follow with https://filamentphp.com/docs/3.x/forms/fields/repeater ->addAction(fn($action)=> $action->authorize(...

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Conditionally add and update relations