FilamentF
Filament•13mo ago
Pritbor

Custom Field passing dynamic data challenge

I am trying to pass the value to a custom field based on the state of other field using Get. But I am unable to retrieve data while i use the field. 
                         Select::make('brand_id')
                            ->relationship(name: 'brand', titleAttribute: 'name')
                            ->searchable()
                            ->preload()
                            ->optionsLimit(5)
                            ->required()
                            ->live()
                            ->afterStateUpdated(function (Set $set) {
                                $set('business_category_id', null);
                            }),


                        SelectItemModelBusinessCategory::make('business_category_id')
                            ->label('Business Category')
                            ->brandModel(function(Get $get): int {
                                return (int)$get('brand_id');
                            }),
And below is my Field class 
 class SelectItemModelBusinessCategory extends Field
{
    protected string $view = 'forms.components.select-item-model-business-category';

    protected int| Closure | null  $modelId = null;

    public function brandModel(int | Closure | null $modelId): static
    {

        $this->modelId = $modelId;
        return $this;
    }

    public function getBrandModel(): ?int
    {
        return $this->evaluate($this->modelId);
    }


        /**
     * Pass modelId to the view
     */
    protected function setUp(): void
    {
        parent::setUp();

        // Ensure modelId is passed to the view
        $this->meta('modelId', $this->getBrandModel());

    }

}
I am using my field view like 
     <livewire:filament.categories.item-model-business-category-selection
        wire:model.live="{{ $getStatePath() }}"
        :modelId="$getMeta('modelId')"
        :key="'item-model-business-category-' . $getMeta('modelId')"   />
Solution
Here is how issue is resolved. In form I used 
                        Select::make('brand_id')
                            ->relationship(name: 'brand', titleAttribute: 'name')
                            ->searchable()
                            ->preload()
                            ->optionsLimit(5)
                            ->required()
                            ->live()
                            ->afterStateUpdated(function (Set $set, $state) {
                                $set('business_category_id', null);
                            }),


                        SelectItemModelBusinessCategory::make('business_category_id')
                            ->label('Business Category')
                            ->modelId(function ( Get $get): int {
                                return  $get('brand_id');
                            }),
And in Custom Field class I used 
 class SelectItemModelBusinessCategory extends Field
{
    protected string $view = 'forms.components.select-item-model-business-category';

    // protected ?int  $modelId = null;

    protected int | Closure | null $modelId = null;

    /**
     * Pass modelId to the view
     */
    protected function setUp(): void
    {
        parent::setUp();

    }

    public function modelId(int | Closure | null $modelId): static
    {
        $this->modelId = $modelId;

        return $this;
    }

    public function getModelId(): ?int
    {

        return $this->evaluate($this->modelId);
    }

}
Finally i rendered my livewire in field view class like 
    <livewire:filament.categories.item-model-business-category-selection
        wire:model.live="{{ $getStatePath() }}"
        :modelId="$getModelId()"
        :key="'item-model-business-category-' . $getModelId()"   />
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