[Bug]: Iam no talbe to use addMenuItemFields select with relationship

[NifeCz]

What happened?

when you add select with relationship, like eg. linkable_id, there is error Call to a member function isRelation() on null <x-filament-actions::modals />###

How to reproduce the bug

just add in to your AdminPanelProvider plugin
->addMenuItemFields([
Select::make('linkable_id')
->label('Článek')
->relationship('linkable', fn($record) => $record->title)
->preload(),
])

Package Version

0.5.4

PHP Version

.3

Laravel Version

11.9

Which operating systems does with happen with?

Windows

Notes

No response

[NifeCz]

thank you for you great work anyway, iam for sure able to fix it on my own

[datlechin]

@NifeCz

Because you're trying to use a standard Select component with a MorphTo relationship. When dealing with polymorphic relationships in Filament, you need to use the specialized MorphToSelect component instead.

https://filamentphp.com/docs/3.x/forms/fields/select#handling-morphto-relationships

[NifeCz]

ok, i see, thank you!! but still is not working:

 FilamentMenuBuilderPlugin::make()
                    ->usingResource(MenuResource::class)
                    ->addMenuItemFields([
                        MorphToSelect::make('linkable')
                            ->label('Článek')
                            ->types([
                                MorphToSelect\Type::make(Article::class)
                                    ->titleAttribute('title'),
                            ]),
                    ])

class Article extends Model implements MenuPanelable