call to member function on null in select with relationship

What should be the error here, my code

public function form(Form $form): Form
{
    return $form
        ->schema([
            Forms\Components\Tabs::make('Label')
                ->tabs([
                    Forms\Components\Tabs\Tab::make('Personal details')
                        ->schema([
                            Forms\Components\Grid::make()
                                ->schema([
                                    Forms\Components\Select::make('languages.name')
                                        ->label('Languages')
                                        ->required()
                                        ->multiple()
                                        ->relationship(name: 'languages', titleAttribute: 'name')
                                        ->searchable()
                                        ->preload(),
                                ]),
                        ]),
                ]),
        ]);
}

// relationship
public function languages(): BelongsToMany
{
    return $this->belongsToMany(Language::class);
}

// blade.php
{{ $this->form }}

public function form(Form $form): Form
{
    return $form
        ->schema([
            Forms\Components\Tabs::make('Label')
                ->tabs([
                    Forms\Components\Tabs\Tab::make('Personal details')
                        ->schema([
                            Forms\Components\Grid::make()
                                ->schema([
                                    Forms\Components\Select::make('languages.name')
                                        ->label('Languages')
                                        ->required()
                                        ->multiple()
                                        ->relationship(name: 'languages', titleAttribute: 'name')
                                        ->searchable()
                                        ->preload(),
                                ]),
                        ]),
                ]),
        ]);
}

// relationship
public function languages(): BelongsToMany
{
    return $this->belongsToMany(Language::class);
}

// blade.php
{{ $this->form }}

I also put $this->form->fill(); in mount()

7 Replies

VpOP•15mo ago

Error

Dennis Koch•15mo ago

You didn't provide a model, right?

VpOP•15mo ago

wdym? I have this like below

public $candidate;

public function mount(): void
{
    $this->candidate = Candidate::whereUserId(auth()->id())->first();

    $this->form->fill();
}

public $candidate;

public function mount(): void
{
    $this->candidate = Candidate::whereUserId(auth()->id())->first();

    $this->form->fill();
}

Dennis Koch•15mo ago

This is for v2 but should be somewhat similar https://filamentphp.com/docs/2.x/forms/getting-started#registering-a-model

Getting started - Form Builder - Filament

VpOP•15mo ago

I've added but still same error, this only happens on select with relationship.. but options is working

protected function getFormModel(): Model|string|null
    {
        return $this->candidate;
    }

protected function getFormModel(): Model|string|null
    {
        return $this->candidate;
    }

Dennis Koch•15mo ago

Was on my mobile, so couldn't really search. Searched the docs again for you. This is the new way: https://filamentphp.com/docs/3.x/forms/adding-a-form-to-a-livewire-component#setting-a-form-model

Adding a form to a Livewire component - Form Builder - Filament

VpOP•15mo ago

Still not working, maybe my approach is bad.. I'll check more

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call to member function on null in select with relationship